Knowles Corp (KN) Q2 2021 Earnings Call Transcript

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Knowles Corp (KN -1.67%)
Q2 2021 Earnings Call
Jul 28, 2021, 4:15 p.m. ET

Contents:

• Prepared Remarks
• Questions and Answers
• Call Participants

Prepared Remarks:

Operator

Good afternoon and welcome to the Knowles Corporation Second Quarter 2021 Financial Results Conference Call. At this time, all participants are in a listen-only mode. After the speakers remarks, there will be a question-and-answer session. [Operator Instructions] Please be advised that todays conference is being recorded.

With that said, here with opening remarks is Knowles' Vice President of Investor Relations, Mike Knapp. Please go ahead.

Mike Knapp -- Vice President, Investor Relations, Knowles Corporation

Thanks, Bloom and welcome to our Q2 2021 earnings call. I am Mike Knapp and presenting with me on the call today are Jeff Niew, our President and CEO and John Anderson, our Senior Vice President and CFO.

Our call today will include remarks about future expectations, plans and prospects for Knowles, which constitute forward-looking statements for purposes of the Safe Harbor provisions under applicable federal securities laws. Forward-looking statements in this call will include comments about demand for company products, anticipated trends in company,s sales, expenses and profits, and involve a number of risks and uncertainties that could cause actual results to differ materially from current expectations.

The company urges investors to review the risks and uncertainties in the company s SEC filings, including, but not limited to, the Annual Report on Form 10-K for the fiscal year ended December 31, 2020, periodic reports filed from time-to-time with the SEC, and the risks and uncertainties identified in today s earnings release. All forward-looking statements are made as of the date of this call and Knowles disclaims any duty to update such statements, except as required by law.

In addition, pursuant to Reg G, any non-GAAP financial measures referenced during today s call can be found in our press release posted at our website at knowles.com and in our current report on Form 8-K filed today with the SEC, including reconciliation to the most directly comparable GAAP measures. All references on this call will be on a non-GAAP continuing operations basis unless otherwise indicated.

Also, we have made selected financial information available in webcast slides, which can be found in the IR section of our website.

With that, let me turn the call over to Jeff, who will provide some details on our results. Jeff?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Thanks, Mike and thanks to all of you for joining us here today. For Q2, we reported revenue of $200 million, above the midpoint of our guidance and up 31% from the year ago period driven by strong demand across our Audio and Precision Device segments. Gross margins improved to 42.2% and our earnings per share were $0.31, both above the high end of our guidance range.

In Audio, revenue was up 43% from a year ago period as Hearing Health sales doubled and we saw continued robust MEMS microphone demand in multiple end markets. Precision Devices delivered record revenues in Q2 up 5% from the year-ago period, underscored by a recovery in the medtech market and an acquisition we completed in the quarter. Overall, a great quarter for the company that emphasized our leading position across a broad range of growing end markets, our focus on high value products to improve gross margins and our strong operating leverage.

Let me provide some detail on the trends we are seeing buy end market. In Audio, we saw broad based improvement year-over-year in MEMS microphone sales across non-mobile end markets, particularly in ear, IoT and computing devices as work from anywhere and remote schooling trends continue. We anticipate non-mobile to represent more than 50% of microphone sales in 2021, as new true wireless and IoT devices are launched in the second half of the year.

In addition, we re beginning to see emergence of new markets we can serve in the non-mobile category that may provide additional growth opportunities over the next several years. First, we are seeing increased design activity around the virtual reality market. IDC forecast VR headset shipments to grow to over 28 million units in 2025 with a five-year CAGR of 41%. VR has the potential to revolutionize a number of industries and high performance audio is a critical piece of this equation to enable the best user experience.

The second is White Goods, where we recently used a complete development platform consisting of microphones and a digital signal processor that enables fast and easy voice integration for smart appliances. This solution was selected by Samsung in its Family Health portfolio of smart appliances and the first product launch the client is planning to introduce was a smart refrigerator.

Finally, we see the automotive market becoming a potential opportunity for our MEMS microphone business, as our customers focus on reducing unwanted growth of engine noise in the cabin, and enabling voice input to control the vehicle systems. We are seeing an accelerating transition from electric to MEMS microphones in automotive and have launched a new product portfolio for this market, as customers are beginning to recognize the importance of higher quality and the supply assurance that Knowles offers. The mobile Q2 mic sales came in as expected and we expect a strong seasonal uptick in sales in Q3 as multiple OEMs around the world launch new products.

For Hearing Health shipments have recovered to pre-COVID levels and we see improved demand in the audio file segment as US concerts resumed. In addition, the White House issued an executive order earlier this month, which could help accelerate the issuance of over-the-counter hearing aid regulations and products in the US. While this is not new news for the sector, it does highlight there s a potential upside for us to benefit from the large addressable market of people suffering from mild hearing loss. Overall, we expect continued strength in traditional hearing aid channels with momentum building in the over-the-counter market. We also expect continued rapid growth in the TWS segment with premium devices offered offering advanced features like active noise cancellation and assisted lifting functionality. All this represents positive trends for tier one device acoustics over the next several years.

In Precision Devices, Q2 sales reached record levels with significantly improved gross margin and demand in defense, medtech, industrial and electric vehicle markets show strong sequential improvement. We also require Integrated Microwave Corporation, a leader in the design and manufacturing of custom high performance RF filters for the aerospace, defense and communications industries. By expanding our product portfolio, we grow our serviceable available market while providing our customers a one-stop shop for their high performance RF solutions. John will discuss the financial impact from this transaction in just a moment. For the second quarter, we also saw record bookings again in PD giving me confidence that we can grow Precision Device revenue again this year.

With a strong first half and I expect the momentum to continue in Q3, I believe our leadership positions across the markets we serve and our strategy to deliver high value differentiated solutions to a diverse set of growing end markets positions us well for future growth. With that, I ll turn it over to John to expand on our financial results and provide guidance for the third quarter. John?

John Anderson -- Senior Vice President & Chief Financial Officer, Knowles Corporation

Thanks, Jeff. We reported second quarter revenues of 200 million, up 31% from the year ago period, driven by increased shipments in both the Audio and Precision Device segments. Audio revenues of 150 million were up 43% due to increased shipments of MEMS microphones across non-mobile end markets and the recovery of the hearing health market to pre-COVID-19 levels. Precision Devices delivered record revenues of 50 million, up 5% year-over-year as a result of organic growth driven by increased demand for high performance capacitors in medtech, industrial and automotive markets and an acquisition completed in the second quarter of 2021.

Second quarter gross profit margins were 42.4%, well above the high-end of our guidance range and up more than 10 percentage points versus the same period a year ago. The Audio segment gross margins improved more than 12 percentage points, driven by higher factory capacity utilization and favorable product and customer mix. In the Precision Device segment, gross margins were 5 percentage points above prior year levels due to favorable product mix, productivity gains and increased pricing, partially offset by higher precious metals cost.

R&D expense in the quarter was 22 million, in line with expectations and up 2 million from the year ago period as higher incentive compensation costs and increased spending in MEMS, Hearing Health and Precision Devices was partially offset by the impact of restructuring actions taken in the second quarter of 2020. SG&A expenses were 28 million, 1 million above our guidance range driven by higher incentive compensation cost and increased legal expense related to the favorable ruling we received in the Bellsing lawsuit. SG&A was up 1 million from the prior year due to higher incentive compensation costs, partially offset by the impact of restructuring actions taken in the second quarter of 2020.

For the quarter, adjusted EBIT margin was approximately 18%, at the high end of our guidance range and up more than 18 percentage points from the same period a year ago, driven by increased shipment volumes and higher gross margins. EPS was $0.31, above our guidance range and up $0.32 from the prior year. Further information including a detailed reconciliation of GAAP to non-GAAP results is provided in the financial tables of today s press release and can also be found on our website at knowles.com.

Now I ll turn to our balance sheet and cash flow. Cash and cash equivalents totaled 94 million at the end of Q2. Cash generated by operations in the quarter was 21 million above the high end of our guidance due to higher EBITDA and lower than expected net working capital. Capital spending was 11 million in the quarter. During the quarter, we resumed buying under our share repurchase plan and acquired roughly 1 million shares. We also completed the acquisition of Integrated Microwave Corporation for 79 million, net cash acquired.

In 2022, we expect the acquisition to deliver more than 20 million in revenues, an above average gross margins, and EPS of $0.04 to $0.06. Given our existing cash position and our expectations that we will continue to generate significant free cash flow, we intend to settle the principal amount of convertible notes, which mature in Q4 of this year in cash.

Moving to the third quarter, we expect total company revenue to be between 227 million and 237 million, up 13% at the midpoint versus the same period a year ago. Revenue from the Audio segment is expected to be up approximately 6% from Q3 2020 due to increased shipments into non-mobile and Hearing Health applications. Precision Devices revenue is expected to be up more than 38% versus the prior year, driven primarily by organic growth in the defense, medtech and EV markets and the acquisition completed last quarter.

We estimate total company gross margins for the third quarter to be 40% to 42%, up 430 basis points from the year ago period driven by both the Audio and Precision Devices segments, and higher capacity utilization, favorable product and customer mix and the acquisition completed in Q2. Our gross margin expansion in the first half of 2021 demonstrates the execution of our strategy to deliver high valued differentiated solutions to our end markets. We expect total company gross profit margins will exceed 40% for full year 2021.

R&D expense in Q3 is expected to be between 21 million and 23 million, up 3 million from prior year levels due to higher incentive compensation costs and increases in MEMS microphone and Precision Device spending. We re projecting some selling and administrative expense to be between 26 million and 29 million, up 1 million from the year ago period driven by higher incentive compensation cost and the impact of the acquisition completed in Q2, partially offset by lower legal expense.

We re projecting adjusted EBIT margin for the quarter to be in the range of 19% to 21% and expect EPS to be within a range of $0.38 to $0.42 per share. This assumes weighted average shares outstanding during the quarter of 95.3 million on a fully diluted basis. We re forecasting effective tax rate of 11% to 15% for the quarter and we expect cash generated by operations in Q3 to be between 30 million and 40 million with capital spending of approximately 15 million.

Please refer to our press release and to our Form 8-K filed today with the SEC for a GAAP to non-GAAP reconciliation. I ll now turn the call back over to Jeff for closing remarks and then we ll move to the Q&A portion of the call. Jeff?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Thanks, John. Before we move to the Q&A, there are a few points I d like to highlight from our Q2 results and our Q3 guidance. First, the diversity of our revenue across a range of growing end markets is a significant benefit. In addition to participating in a number of compelling growth opportunities in markets that demand high value solutions, we are continuing to reduce risk of being exposed to any one specific market.

Second, our Q2 results cap off a very positive first half for revenue and gross margin, which coupled with operating leverage, is driving increased EBIT margins. Lastly, our strategy to deliver high value differentiated solutions to a diverse set of end markets producing strong cash flow that allows us to drive shareholder value through debt reduction, investment in high growth margin products, accretive acquisitions and stock buybacks.

Operator, we can now take questions.

Questions and Answers:

Operator

Thank you. [Operator Instructions] Our first question comes from the line of Bob Labick from CJS Securities. Your line is now open.

Bob Labick -- CJS Securities -- Analyst

Good afternoon. Congratulations on a nice quarter.

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Thank you. Thanks, Bob.

Bob Labick -- CJS Securities -- Analyst

I wanted to start with the gross margins. They were obviously fantastic above guidance, above expectations, etc. What were the primary drivers for the gross margins? I know you guided to above 40 for the year. What does it take to get or how long might it take to get to like a 42% annual number and what would be the drivers to get there?

John Anderson -- Senior Vice President & Chief Financial Officer, Knowles Corporation

Yeah, Bob. Let s start with Q2. In the Audio segment, gross margin improvement was really driven by favorable mix, specifically a higher portion of MEMS microphone shipped into non-mobile applications like ear, IoT and compute, which typically carry above average margins. We also saw with the recovery of our Hearing Health business, a higher proportion of sales into that market, which again, carry higher than average gross margins. And then lastly, we had very high factory capacity utilization in Q2, well north of 90%.

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

And I think just to put a little bit more color around that. I think that s the theme we ve been talking about for a while that as we are looking at our investments and where we re developing products, where we re investing our capex, we re moving it more in a direction of higher gross margin products that will allow us to continue this trend of moving the gross margin up over time.

John Anderson -- Senior Vice President & Chief Financial Officer, Knowles Corporation

Yeah. And Bob again, just to say, I talked about the specifics in Audio, with respect to PD, a little different. I think, one, it made some really significant factory productivity gains over the last couple quarters and it s really starting to hit in Q2. Also, the pricing trends are favorable there. We ve been able to pass on, either through surcharges or higher pricing some of the palladium-increased palladium costs. And so those are the drivers. And lastly, again, a little favorable mix in that we re selling more into the higher margin defense and medical markets which have recovered in Q2. We really expect that to continue over the course of the remainder of 2021.

I mean, I think in your question with respect to what would it take to get to 42%? I think it is to keep delivering what we re doing and what you saw demonstrated in Q2. I don t think there s anything specific. The one thing I will say that we do look forward to in 2022 is introduction of some new products that are coming in at higher gross margin. So it s really keep doing what we re doing in Q2 and then adding and layering in some new products at higher margins. Jeff, anything there?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

No, I mean, that s probably good and some discussion where we re thinking about capital allocation whether it be in the R&D or capex and how we re spending that on higher gross margin products and markets, we will continue that as well as we have a fair amount of new products that we think will have positive impact on gross margin in 2022.

Bob Labick -- CJS Securities -- Analyst

Okay, super. And then just one more for me, you obviously made a nice and accretive acquisition that you just told us about. You still have-I think you were net cash before this, so that still be you have a very strong balance sheet and strong free cash flow. How is the market looking out there for additional M&A? Are you still in the market looking for more tuck-ins and what areas would you be interested in? And is that an opportunity to grow margin from there as well?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Yeah, let me just make the comment first; we re really pleased with this acquisition that we were able to complete in Q2. It does a couple things for us. Number one, it expands the range of frequencies when we can offer RF solutions, gives us more of a one-stop shop with our defense and aerospace customers. And I mentioned this in the pre-prepared remarks, but there s also a cross selling opportunity here. We have our customers we can walk into now with a new offering of product. So it s pretty positive.

And this we re-our expectation for this acquisition it does tend to be above 50% gross margin. And so I think there are other opportunities for us like this, Bob. And I think it s a matter of the timing of when they happen but as I kind of looked through in the past, it feels like in these markets, the PD markets, there is, at least, I would say bolt-on size acquisitions. It s a pretty target rich environment. It s a matter of finding the stuff that s right for us and that fits with what we re trying to do. But I would anticipate we re going to continue to do these things in the future.

Bob Labick -- CJS Securities -- Analyst

Super. That sounds great. Thanks so much.

Operator

Your next question comes from the line of Anthony Stoss from Craig-Hallum. Your line is now open.

Anthony Stoss -- Craig-Hallum -- Analyst

Hey, my congrats as well, especially on the gross margins. Maybe get some comment about where you see them going mid-term, any thoughts related to that? And then Jeff, love to hear your thoughts on growth of PD record quarter. That s stellar. I m curious where you think that goes. And lastly, maybe back to John, where s the bulk of your capex being spent right now?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Okay. First on gross margin, I think that we put out-if you remember, we put a mid-term model out here in 2019 of 42%. I think this is a very achievable number, right. I think there s a good opportunity potentially to go higher than that, with some of the things we re doing. And so I think we re still that s we re running toward, getting above the mid-term model. Now how long exactly it takes, it depends on a few things; one is this again, and I want John to talk about this in a minute about capex, what we re spending capex on today, and maybe in contrast to maybe what it was three or four years ago, but I think it s really about this capital allocation and where we re spending our money, Tony, and I ll give you a couple examples.

Just on the R&D side, if you go back four or five years ago, most of our R&D spend was targeted at mobile on MEMS mic and now what we ve done is, yes, we still have a fair amount, mobile is an important business for us, but it s now we re developing prices specific to the ear, specific to the compute, specific to the IoT market, which helps again shift the mix.

We re spending more money on R&D with PD, right. And so what you kind of see here is-and then lastly, I think, I was excited to hear a bit about the Hearing Health market. The core market, the normal channels are, obviously, recovering very well from COVID. But in addition we re getting a little bit more excited about the over-the-counter market, right.

You re starting to see, like the of the world start to talk about selling over the internet. And this is really targeted at a portion of the market, Tony, that doesn t really buy today, people without hearing, they re sitting without a hearing aid and so there s good opportunity.

And then lastly, I don t want to discount this but I know you asked a lot about it usually about the balanced armature speaker automated line. That s still scheduled to go into production late this quarter, late in Q3. And I think it may take us nine months from when it s fully installed to get it up fully running to full capacity. But I m seeing more places where we can use that capacity too.

I think, obviously, the true wireless market is interesting. But there may be some places in this over-the-counter market where using this automated line makes sense. And so I think overall, the Hearing Health business, also, again, shifting to all of our businesses that are above the corporate average, to capital allocation and R&D spend.

John, if you want to comment about capex?

John Anderson -- Senior Vice President & Chief Financial Officer, Knowles Corporation

Yeah, sure. Tony, I mean, I mentioned we spend somewhere between 5% to 7% of revenues in 2021 on capex, call it roughly $50 million. About 60% of that is in our MEMS business, and it really focuses on projects like our eight inch conversion, also some new product introductions that will be coming into the market next year and beyond. Outside of the MEMS area, we are-we do still have some payments related to the BA automated line that we ll be making this year and then in PD, some capacity and some cost improvement opportunities that have really quick paybacks in ROI where you make the investment. So that s pretty much it.

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

And let me just make one other kind of comment and I think it is worth mentioning. I mentioned this just briefly on the previous call, is that as we start looking at our markets for Knowles mics, we re starting to think more about, I would call, the more commoditized portion of the MEMS microphone market and we re starting to think, I would say more than started to thing, we re starting to actually sell dye, as opposed to finish microphones, so that this commoditized portion of the market can get access to the Knowles technology, without having to actually us sell a lower gross margin product. And that s another thing, I think they ll start having impact in 2022.

I think we have one last question about the PD growth. Yeah, I mean, what I would just say here, if you remember, last quarter, I can talk about record bookings and I said, usually record bookings translate into record revenue and that s what you re seeing in Q2, and the bookings continue to be very, very strong. And this is even without the acquisition. If I looked at the numbers, even without the acquisition, it was a record shipment quarter for PD, even without the acquisition. So when you layer on the acquisition, you start seeing these numbers them are going north of $50 million per quarter of revenue, and from the Q2 results. And so I think, we still expect more growth in this in these markets in 2022, possibly after the acquisition and I m hopeful there may be a couple more acquisitions that we can do over the next 12 to 18 months.

John Anderson -- Senior Vice President & Chief Financial Officer, Knowles Corporation

Tony, if I just have to add to that either-to just comment in the PD growth, I mentioned in my script that we expect PD to grow about 38% year-over-year, the bulk of that is actually organic growth; about 25% of that growth is organic, 13% is due to the acquisitions. So, that s typical.

Anthony Stoss -- Craig-Hallum -- Analyst

Based on the comment, if I can sneak in one just quickie last one here. Malaysia, the Philippines, COVID is kind of reemerging, we re hearing from other covered companies that they ve got to close the plants for a couple days in fact here and there. Are you seeing any impact over the last week or two?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

The last week or two, no. I think we are continuing to monitor but we ve been pretty good at about managing our factories. We re starting to actually see, Tony, a few of our factories are starting to get some amount of vaccinations, people are starting to get vaccinated. So, we re hopeful that we ve really done-our operations team and I would really commend them and give them a big shout out. It really worked through and we really haven t had a lot of closures related to COVID through the whole thing and so, we will obviously continue to monitor but right now I think we re in decent shape right now. We got to keep monitoring things.

Anthony Stoss -- Craig-Hallum -- Analyst

Thanks, Jeff. Congrats guys.

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Thanks.

Operator

Your next question comes from the line of [Indecipherable]. Your line is now open.

Unidentified Participant

Hi Good afternoon. What patterns are you seeing from your larger smartphone customers, given the well-advertised, shortages? Do you think there s going to be attempt to rebuild inventories in smartphone in the second half? Is that embedded in your guidance? How do you think you re going to be shipping relative to end demand in smartphones?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Yeah, so maybe I m not going to comment specifically to the largest customer, but let me give you maybe just a little general color just on capacity and our capacity constraints. I would sit there and say, right now, seasonally, we expect pretty right up strong, but I would say we ve factored into this guide that there is going to be some shortfalls, right, relative to what we possibly could really ship in the quarter.

And so I think we can work through some of these issues. And I ll describe that we re starting to see a little bit of its hedgy on whether I need the product, whether we can get some of the supplies that we need in the MEMS microphones, I think relatively limited, right today, but we did factor some of this into the guide that we ve given that there s a possibility that things could slow or upside growth could be limited by something that happens in market, whether it be COVID, availability of wafers, other silicon for us or our customers, we factored a little bit of that in.

Unidentified Participant

Okay, let s useful. And then as a quick follow up, if you could expand a little bit on the commentary in the Q&A that you re starting to sell microphone dies without actually lowering your gross margin, what percentage of value or even units you think that could be by 22, 23? And what are the ASPs on that? Is it half of the typical mic ASPs? How should I look at this from a revenue contribution?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Yeah, I mean, obviously, the ASPs are lower because of the fact we re just selling the die and potentially the ASIC that goes with it, the wafers as opposed to selling the whole microphone. But our target is that the gross margin should be above the corporate average by selling die. And the market that we re targeting here, I would sit there and say is, let s use the example, the very low end of mobile market, the low end of the IoT market, the very low end of the ear market, right.

And I would sit there and say, for the most part, we re not highly participating in a lot of the portions of the market today. Where probably this could be, I would sit there and say, just from my perspective and I wouldn t put a timeline on it, but if we re not thinking hundreds of millions of units, it s probably not worth pursuing. I mean, that s kind of in my mind. It s not-we re not talking about here trying to sell 10 million die or something like that. We re trying to sell hundreds of millions of die and with above the corporate average gross margin.

Unidentified Participant

Great. Very useful. Thank you.

Operator

Your next question comes from the line of Chris Rolland from Susquehanna Financial. Your line is now open.

Chris Rolland -- Susquehanna Financial -- Analyst

Hey, guys, thanks for the question. Your handset market in particular, mobile market in particular, this year, how should we think about seasonality? And are there any differences in seasonality into December and maybe even into March, if you could?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Yeah. I am going to point on March, but I ll kind of give you kind of my thought process on Q3 and Q4, which is if you look at last year, our handset was much stronger in Q4 than it was in Q3. I would say that if you go back previous years, that s usually an anomaly, right, that Q4 in handsets was stronger than Q3. I would say we re going to return kind of more to traditional where you re going to see Q3 be pretty large, relatively speaking and then Q4, maybe down a bit right now, it is seasonal.

But here s the one caveat, of course, I got to give Chris is, there s a lot of people introducing phones around the world from our largest customer to Korea, there s lot of phones coming out of China, we really got to see the sell through on these to see like, really what, late Q4 and in Q1, how that s going to develop.

Chris Rolland -- Susquehanna Financial -- Analyst

Understood. And then just some housekeeping items on the acquisition. What did you guys pay for that? And if I heard you correctly, I think the annual run rate is 20 million there at 50% gross margin. And then when did they close on the quarter, how much was in this quarter s number?

John Anderson -- Senior Vice President & Chief Financial Officer, Knowles Corporation

Chris, we closed the acquisition on like the first week of May and so you have a couple months worth of activity in there.

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Just to make a comment that we knew going in the revenue might be a little lighter in the first couple months but it d start to improve a little bit more in the next few quarters.

John Anderson -- Senior Vice President & Chief Financial Officer, Knowles Corporation

And the acquisition price, including real estate we acquired was 79 million net of cash.

Chris Rolland -- Susquehanna Financial -- Analyst

Excellent. Thank you, guys.

Operator

[Operator Instructions] Your next question comes from the line of Suji Desilva from ROTH Capital. Your line is now open.

Suji Desilva -- ROTH Capital -- Analyst

Hi, Jeff. Hi, John. Congrats on the progress here. So looking at some of the different growth areas you have, I think headphones TWS, you have the balanced armature, incremental Hearing Healthy, you were talking about in this call and highlighting. Maybe you could talk just about which of those you think of the better growth opportunities relatively in second half 21 or 22, just so we can get some rank ordering in our understanding?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Yeah, so let me-I first kind of what I would say about this is, as more and more I have seen the diversification of our markets, I m sitting there saying, I think we ve got a fair number of singles and doubles here. And so, I mean, I think the balanced armature is a great opportunity, which is going to be expanding beyond, I would say, the True wireless, but also the over-the-counter market. I think those are markets that are developing that I think should provide growth for us in 2022.

I think, the Europe market for microphones continues to still look positive for us, although it s going to be, I would say, more in the future or at least, there s going to be more customers in this success besides just a few. I think IoT continues to look very good for us in terms of always exploring spec. We re spending a lot of time developing programs around the long tail to pursue long tail customers with reference designs, which should drive more volume.

The compute market interesting, right, I mean, it s been really on a nice run the last year and a half with work from home. I think there s a little bit of difference of opinion, what 22 looks like. I mean, I guess what I would say is, maybe it won t be as fast as growth, as we ve seen, because of work from home over the last year, year and a half, but if we think inventories are still low, and so we think that things look decent next year in compute, Hearing Health and then Precision Devices.

I would sit there and say, defense and medtech look to continue to be strong. Defense with RF filtering, especially now with this acquisition gives us a broader range of products. And medtech, we re just positioned in the right places. We re getting some new applications beyond just some of the traditional implantable applications that we ve had.

And then lastly, the EV market, I think we re still assessing the total size of this market it could be in three to four years, but we keep focusing on, I would call it, high voltage, high temperature applications in the electric vehicle where we have a distinct advantage. And we re not selling jelly bean capacitors, we are selling capacitors that have high value. And this year, I think it could approach roughly even $15 million in the EV market, which three, four years ago, this was zero. So I don t want to say, like, there s no one home run here but you ve got so many great things going in a diversified set of markets, so I feel pretty good about all these markets.

Suji Desilva -- ROTH Capital -- Analyst

Okay. Appreciate all that color, Jeff. And then I don t know if this is asked, already discussed, but the supply chain constraints that are around you guys and you re running tight yourselves, any impacts on your revenue and your ability to ship this quarter? And can you talk about sort of incrementally whether those constraints are getting worse, stable or improving would be helpful?

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Yeah, I would say, we are having some constraints on the MEMS microphone side. I d say, PD, we re not having any constraints. Hearing Health, I would say there s limited constraints. I would say there s a lot of demand and we re keeping up but it s not really like we re having a constraint, it s just that our capacity is pretty full. But in MEMS mic, I would say that we factored into this the guide that there is some constraints across certain products and so, we re working through this really hard quickly to try to solve these problems and I m hoping that we ll see some of this rectify itself late in the quarter in Q4.

John Anderson -- Senior Vice President & Chief Financial Officer, Knowles Corporation

In terms of trajectory, I haven t seen any major changes in the last couple of.

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

No, I don t see major changes. I think we ve been anticipating this because I think what you have here is, just generally speaking, you have the seasonal market going up with tightness in supply, right. You already have that right and so we didn t have as much as of that in the first half, right. And so, the back half in Q3 specifically, we re kind of factoring a little bit into here, right, saying, well, we actually could ship more if we had more.

Suji Desilva -- ROTH Capital -- Analyst

Okay. Encouraging your seasonality is strong, OK. Great. Thanks, guys.

John Anderson -- Senior Vice President & Chief Financial Officer, Knowles Corporation

Thanks you.

Operator

Speakers, I m seeing no further questions in the queue. Please continue.

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

Great. Well, thanks very much for joining us today. As always, we appreciate your interest in Knowles and we look forward to speaking with you on our next earnings call. Thanks and good bye.

Operator

[Operator Closing Remarks]

Duration: 38 minutes

Call participants:

Mike Knapp -- Vice President, Investor Relations, Knowles Corporation

Jeff Niew -- President & Chief Executive Officer, Knowles Corporation

John Anderson -- Senior Vice President & Chief Financial Officer, Knowles Corporation

Bob Labick -- CJS Securities -- Analyst

Anthony Stoss -- Craig-Hallum -- Analyst

Unidentified Participant

Chris Rolland -- Susquehanna Financial -- Analyst

Suji Desilva -- ROTH Capital -- Analyst

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