Took delivery of this about an hour and ago and been listening for about 45 mins or so. I can't tell you how emotional I feel listening to my favourite music and performances on this. I can't believe how lifelike it feels; despite being so detailed. I feel like I'm in the recording studio with AC/DC, Peter Gabriel and performing on stage with the Australian Opera and Ballet Orchestra/Orchestra Victoria. It's also super revealing and I can feel the level of compression and pre-delay on individual tracks within a song, while also getting an accurate feel of an opera theatre. Truly mind blowing and it's only going to open up more as time passes! Thank you for your recommendation and 100 points to Burson for such an amazing product!! Bravi tutti

Just bought one of these as an upgrade over the Singxer SA-1 at your recommendation. I AM BLOWN AWAY!!! Best headphone amp and preamp I have heard, hands down. I am slightly concerned about the DC offset issues that folks have mentioned, but I always let it warm up for at least 15 minutes before plugging in my headphones on mute with no music playing. Anyways, I very much appreciate the advice Lachlan! A winner in every way. Cheers from USA!

I just got this amp. So far its been really enjoyable with my Focal Clear MG Pros and LCD-X.. I think I enjoy the LCD-X a tad bit more after some EQ. I agree in that the Soloist is phenomenal at adding depth to the sound stage as I am hearing the intricate details in songs placed better than in the Singxer SA-1 that I upgraded from. I still love the Singxer but I feel this is just a level above. Not sure if I want to sell my Singxer or keep it as a backup or 2nd setup. I have the Soloist paired with the Topping D90se and overall the quality is fantastic. Great review as always!

I continue to love your reviews. I think I’ve watched this review 3-4 times. Given the longer lead times of the jotenheim, I believe I am switching my order to the soloist. I can afford the difference in price, and your review is compelling! I didn’t see a reference in this review to the test tracks that you used. You mentioned a track, ‘a man is not his ???’ But I couldn’t quite catch it, and didn’t see it listed. Can point me to the track?

Just ordered it. Watching this review on repeat!

To echo many other comments, just placed an order myself after your very thorough and thoughtful review. Very excited to hear it and experiment with rolling Opamps! Thanks for your help!

Mine came today ! It’s so lovely 🥳

Ordered... and in bound. Thank you for a brilliant indepth review.

Hi. Thanks for all your very detailed reviews.

Intriguing theory on possible timing errors introduced by the capacitors in ICs and why discrete circuit design might ultimately be better. I feel you're onto something here.

Incredible review. Your descriptions and comparisons are very informative and have helped me understand different gear a lot better. If you ever review the Jotunheim 2, comparing the Jotunheim with the Soloist would be really interesting as they both seem to have similar design goals (both fully balanced, fully discrete, transparent, with lots of power).

Fantastic following your KZfaq journey man - this one was one of your best 👌

Thanks for your great and detailed reviews! I popped the V5i opamps into a Topping A30 and it completely transformed that budget amp and got me interested in Burson's offerings. I'm leaning towards the Soloist with maybe an D90 but I'd be very interested in hearing your impressions of Burson's DAC offerings (and others) as well. The more 3 dimensional sound stage presentation is definitely something that I'm chasing after. Your review of the D90 gave the impression that it is amazing bang for buck but am curious if the D90 flattens out that 3 dimensional presentation quality as you noticed with the A90 as well? Keep up the great work!

Hi Lachlan! I gotta tell you something. I still, after 7 years, own the very first Soloist SL dedicated headphone amp. I find that pairing it with the Qutest DAC from chord set at 3V RMS is an incredible pairing and has been my amp and DAC pairing for nearly 5 years now. :) I have no aspirations to upgrade yet, but maybe you can change my mind. :) Anyhow. A terrific test track is Peter Gabriel’s “Signal to Noise “ track from the album UP. It is a wonderful mix by Tchad Blake. You’ll love it. It is a powerful track that builds, which tests speed, accuracy and detail retrieval. :)

I bought this on your rec. Your review absolutely nailed it! 100% agree on everything. Drives all my headphones with transparency, authority & ease, HE6SE, Arya, HD800S, HD6XX, LCD-4, NEVER sounded better. This amp is my endgame. Even in light of the new GT that was just released. As far as I can tell, its still pretty much the same amp, with a bit more power that I don't need, and a few more features that I probably won't use.

My unit finally arrived two days ago and based on first impressions, sounds pretty fantastic paired with the rme! I was looking for an upgrade to my thx 789. As great as it is, it can be harsh-sounding and too analytical. Also, I was looking for an upgrade that has better aesthetics and a better build; I definitely got it with the soloist. This thing is even more gorgeous in person! I first tried this with my trusty 6xx, as many of you know, scales really well. On the 789, I find the 6xx can be boring at times. The soloist, on the other hand, make these headphones sing! My 6xx never sounded so good. I'd say the soloist is very dynamic and transparent whilst being non-fatiguing. Highs came through beautifully without ever being harsh, but will the details still intact. Mids are very natural and transparent. Bass, I think, is the main highlight. It's very fast while being very controlled and precise. An amazing track I tested this on was from the princess principal soundtrack, "shadows and fog." Overall, it definitely made the 6xx shine and I would even say it sounds better than my sundara, which takes the cake when using the 789 for both. I also tried the soloist briefly with my focal clears. The clears don't benefit that much in terms of scalability, but it sounded great from my brief listen. However, it did make my clears hiss a tiny bit on medium gain. So, to mitigate this I put it on low gain and raised the reference level on the rme. Hopefully, it's not damaging the unit. I'd have to ask burson about this. Now, for some minor complaints I have with the soloist. The volume knob feels great, however, it is not as precise as the rme. I find that the soloist does not register every single turn of the knob, so I'd have to give it a decent amount of spin. Whereas, on the rme, it's very responsive and I can turn the volume all the way up or down fairly quickly. The other complaint I have is with the blue led when it's off, and the display of the actual screen. Both, to me, are kind of a little too bright. I wish they had a brightness setting on the menu. Blue, in my opinion, is one of the worst colors you could put as it stands out during the night. The only reason I don't mind it being blue this time is because the rme standby color is red, so it matches it quite well. As a side note, I love that the soloist has a locking mechanism for the balanced headphone out. Very easy to remove compared to the balanced port on the thx 789, for example. Oh, and I can't forget about the hex driver that came with the unit. It is so fragile and is already unusable! I tightened it with the same force as when it arrived and now it is already worn down. Fortunately, I had another one lying in the tools kit. I was not planning on opening the soloist often, but it is pleasing to look inside it once in a while. Hopefully, none of that happens to any soloist owners. Not a big deal, but just sharing my experience so far. Thank you for the recommendation! Enjoying it so far, and I hope I will continue to do so over the next weeks.

Excellent review, really appreciate the comparisons 👍 ! I’ve ordered one to try with mHugo2.

Great stuff! I hope you can review the Conductor 3 Reference too!

I've been racking my bloody brain to figure out a headphone amp upgrade from my Vali 2. Mate, you've solved my issue. Thanks so much! This is definitely on the cards for 2021 to go with my LCD-2C (and any other sneaky headphone purchases in the FAR FAR future). Definitely swearing off purchasing anything audio past this financial year, Aussie first home deposits aren't the greatest! Anyways, a track recommendation. Got 3: For clarity, fun panning, vocals and highs: Track: Dos Uno Nueve (219) Artist: Omar Apollo For something to test your low-end amongst some brassy tones, you cannot go past this classic tune: Track: Summer Dreams Artist: Skream Just something I've been listening to lately and been having fun with: Track: Less Artist: Matthieu Faubourg Keep going with the stellar videos my man!

I just pre-ordered the Soloist & Composer 3X Performance Combo after hearing your review. The Conductor (Amp + DAC) and Composer 3X already had amazing reviews so this was icing on the cake. I'm upgrading from an iFi iDSD Micro Black Label with Audeze LCD-3 and Focal Elear headphones and to get to a new level of detail to do the headphones justice.

Purchased mine today. This review contributed a lot to my decision, I hope you can also make a video in the future on how to replace opamps.

I got a Burson Playmate and its the cleanest nicest sounding DAC/amp or amp in general I've ever heared.

Thks for the review. I wished they gave u the Soloist 3X / Composer 3X combo (which they r currently promoting) to compare with the Conductor 3XP, 3R and 3XR.

Excellent review, burson synonymous with quality, if my taste were a detailed clean soft analog sound, burson products would be my choice, excellent sound at reasonable price. Thanks for the review.

Thank you for being so open (and dare I say "transparent"?) in your review of this product. I think other reviewers can get a little "too cool for school" if they find something they really like, but don't want to sound too fanboy about. It's great to see someone truly reveal their enthusiasm for a product when they really believe it deserves the attention. I look forward to the time when I can scrap the cash together to hear it for myself.

You’re such a good reviewer. Easy to follow and understand. I’m using a Geshelli amp right now with my Focal Clears and was thinking of upgrading to something like the D90/A90 stack but the way you describe this makes me want to save up longer and go for this or something similar. P.s for someone so focused on audio I’m somewhat surprised to see a Corsair keyboard on your desk. I had one once and after trying some better keyboards i can say there’s ones with much better audible and physical feedback. Not trying to keyboard shame you just suggesting you might want try something else!

After so many headphone amplifier reviews, it’s time to make your own ranking

Super video! I applauded for $10.00 👏👏👏

Great reviews as always. The D90/A90 and the Conductor 3 Performance (without XLR) are similarly priced. I'm just concerned that buying an all-in-one product without balanced capability is something I will regret in the future. Also, the Burson Conductor 3P is rated at 160mW @ 300 Ohm for SE which is less than half of what the Schiit Magni 3+ I'm using now is rated for.

Hi Mate, I thought that I would drop you a note to say that I am extremely chuffed with the "Burson Audio Soloist 3X" I purchased from Addicted to Audio a couple of weeks ago. I am using it with a Raspberry Pi 4B 4Gb, fitted with a UStars Digital Board, feeding a Cambridge StreamMagic6 in DAC Mode. The DAC Output is fed to the Soloist via XLR Cables. I am feeding the Line Level Signal from the Soloist via XLR to a STAX SRM-353X, Energizer powering a pair of STAX SR-L700MK2 Electrostatic Earspeakers. I am using the Soloist to power the following Headphones: Beyerdynamic DT1990 Beyerdynamic T5 Meze 109 Focal Elear Focal Clear Mg It's little wonder to why Burson Audio Products receive so much praise. All aspects of the build and sound are exceptional. It just goes to show that a "Little Aussie Company" can excel on the Word Stage with such a product when meticulous engineering standards are adhered too... --cheers Ray P.S. Thankyou for your hard work.

I just bought one of these amps, it’s excellent, it’s made a huge difference; a bigger sound, better soundstage, more realistic, terrific base slam and control. The RME ADI-2 FS is doing the DAC duties alongside Arya Stealth Magnet headphones. Cables are chord epic rca and Atlas Zeno headphone cable. The RME’s amp was the weakest link. Maybe a Chord Qutest next. Thanks for the great video.

Great review. This seems to be a great amp/preamp for desktop use together with the something like the Denafrips Ares 2 or Bursons own composer DAC. Also nice that you can update the DAC in a few years time, as I am sure developments will continue really fast, especially with R2R dacs. Too bad though that the preamp section does not have an unbalanced RCA out as well. This seriously compromises the flexibility and not sure why they did that...

When someone tested the conductor they said the strong part was the dac, which should mean that the composer is the real gem!

Thanks for a great review. This seems like a fantastic headphone amp. But for this price, I'm inclined to go for the clean but smooth McIntosh 200 headphone amp which is about the same price range.

I'm itching to pull the trigger on this amp. I recently purchased a pair of LCD-X headphones and want to pair it with something "better" than my THX 789. I love your videos by the way.

Many thanks for another great review. I bet the Soloist is a beautiful match for the Empyrean, right?

Great review. Bought one as well since I have pair of Sparkos dual opamps that need new home.

Upgraded from a THX789 to the Soloist 3XP after watching your video and I absolutely love it! Thanks for the review! I am also planning to upgrade my Topping D70 to the Composer 3XP. Have you had chance to listen to the Composer 3XP too?

Thanks for the recommendation. Based on this I've just purchased a Soloist 3X (with black Friday discount!) as it was much cheaper than buying yet another pair of 300B's for my valve (WA5LE) headphone amp!

It will be my next amp for sure :) probably going to suits my Arya & Clear

Sorry to say you'll now need to upgrade to the Soloist 3X GT model :-) BTW I bought the soloist 3X (not GT) after heavily being influenced by your review and it's an awesome amp. Thanks!

i love your reviews and the detail you provide. Incredibly informative and helpful. I have the Chord TT2 but was thinking of getting the Soloist based on your review so that I can run a balanced signal to the Soloist and get a balanced out through my headphones or pre-amp. That is not currently possible with the TT2. Would you advise that? Thanks

Great review. Is this the same product as the Soloist 3 XP? I've looked at their website and it only features the latter. Would you say that in 2022 this is a good upgrade path for the Topping A90 or are the differences not noticeable enough (or perhaps there is a better product to upgrade to)? Thanks!

Super video! I applauded for £5.00 👏👏

Thank you that way wonderful! Would love to hear a review of the SMSL SP400. With stepped R2R volume control, I suspect it will give the Burson a hard time.

Very nice amp. I love the precise volume control and the display. Are there cheaper amps with these qualities ?

Super video! I applauded for $5.00 👏👏

Did you ever get an opportunity to try the Sparkos opamps in the Soloist 3X? Happy New Year and I hope your channel goes gang busters!

This review is 2 years old now, is the Burson Soloist 3X still considered a panicle balanced amp?

Hi Lachlan, great video once again. They’ve been so useful in finding my way through the complex market of this tech - so thank you. Perhaps quite a specific question, but is there anything else out there that matches the soloist for a similar price that includes RCA outputs? The soloist seems a step above the £400 odd amps, and I don’t mind paying, but I really want to use it as a pre into RCA, and it seems the Burson kit requires a transformer to function this way. Another expense and box for this basic functionality! It’s a shame as it looks great. Thanks

I bought this unit (and the composer dac) because this wonderful review, and I'm very happy with that decision. May I ask what digital source did you use (feeding the dac), and will you consider reviewing digital sources (streamers in particular vs computers)? Love this channel, keep up the good work!

Very nice review (as always)! I am considering buying the Soloist. At the moment I own the AG NFB-1amp and the THX 789. I like the NFB -1 amp much better because of the 3D sound comparing to the rather flat sounding 789. How does the Soloist compared to the NFB 1-amp, as you owned the latter ?

Thank you for review. Do you hear any hum through speakers then you use Soloist 3X as preamp on high gain?

I ordered a Burson Soloist 3xp open box w/ supercharger and did not like it all, which leads to me to believe something might have been wrong with mine. Or it could be that the Burson sound just wasn't right for me. I like warm amps like the Jotunheim 2 and listen mainly on tube amps like Lyr 3, etc and well, the Burson seemed to lack warmth overall and sounded more cold and vivid in an unnatural way. The tonality seemed a little hot and uncontrolled in the treble and to me was very fatiguing. I imagine swapping the op amps would make a huge difference, but that's not something I have any interest in dabbling in. Returned it and just ordered a Mjolnir 2 instead which could be endgame for me.

Please let us know when you decide to test out the sparkos and your thoughts!

Great review answered so many questions I had. Recently the topping A90 Discrete released and I was wondering if you could compare them? I’m very curious on your thoughts. Or at least a response to my comment would mean a lot. Im looking to purchase a set of dac and amp shortly.

What DAC with volume control would you recommend for the Soloist 3XP in 2023? Or without.. Qutest?

It sounds good when it is pared with Zen dac through balanced output too. It makes me think that I don't need to invest too much money for DAC, but definitely amplifier.

Are you planning to review the flux lab fa-10 or fa-12? I’d love to hear you opinion on how it compares to the soloist.

Not immediately relevant to the soloist but perhaps of interest to some people considering a Burson DAC/amp and I see interest in the Composer and Conductor below. I have just received a Conductor 3XP and as far as I can tell it will not work with my Auralic Aries Femto streamer over USB. Certainly using Roon. This may be due to its requiring a windows xmos driver though usually DACs which dont need OSX/iOS drivers like the Burson, will work with Auralic streamers. I do have an Aries G2 as well but have not tested that combo yet. It works fine over optical or coax but that means sacrificing sample rates over 24/192 and all DSD. Not a deal breaker for me but may be for some users. Sound wise it is sublime and I am delighted with my purchase but thought potential buyers should be aware. I have reached out to Auralic and Burston to see if there is a workaround and will update if they find one. It could be a Roon issue but I doubt it.

Hi Lachlan, just wondering if you've had a chance to listen to the Focal Arche yet? If so, how would it compare with the soloist? Cheers mate and thanks for all your great work!

Hi Lachlan, thanks for the incredibly detailed review. I absolutely love it and already thinking of pairing this amazing amp to my Chord Hugo2. Do you think they would make a great pair? I’m using them to drive my LCD-2C, Hifiman Susvara, Unique Melody MEST MK. II and LCD-4! Do you think I should purchase a fully balanced DAC like the Schitt Bifrost 2 to make them a fully balanced stack to yield more power for these power hungry cans? Thank you so much mate. I’m looking forward to hearing your great insights. Have a great day good sir!

Hi please compare this vs topping A90 in transient response and bass or they are the same only the soundstage is better as you mentioned?

I really like the idea of the Burson Soloist 3X, but my main source is my PC, I don't understand how you connect a digital source when the amp has no optical, USB, USB c input? I am currently using IEM's I'm pretty sure you recommended awhile ago, the Meze Audio Rai Penta. I'm really enjoying them and would like to experience the benefits of listening to them with the benefit of a quality headphone amplifier. The Burson products really interest me but I don't know how to connect my PC and do they have Bluetooth for my phone?

Great review! Any other great headphone amps that have a power amp mode? I want to connect to the pre-outs on my Audiolab 6000a integrated amp.

Thank you for the GREAT review. What Dac do you think pair best with the soloist 3xp and He1000v2? Bifrost2/Gungnir - Ares2 - D90? Thank you!

Imagine how the HE6se sound with that amp 😍

6.43, it is not unique to burson. Linn, benchmark all use high quality SMPS for their power supplies. Ifi audio also has a high quality SMPS. The earlier days SMPS were noisy, but modern components (fuelled by research into phones and other silicon style devices that need quick bursts of clean power) have made them great. LPS generally is inherently lower noise but they tend to be slow to respond to load changes due to transformer coils (inductor inhibits change in current). SMPS just let's the current pass through without much of that lag in response, but cheaper/older SMPS is likely to be noisy.

Very enjoyable to watch your reviews, thank you. I currently have an RME ADI DAC /amp, would you suggest I get the soloist and add it to the RME or just get a separate DAC like the Bifrost2, I also am curious which streamer you would use with them or even with yours? Thanks so much!

please review the Composer 3X DAC/PRE thx.

Thanx for the review - critical question for me: does this drive the bad boys like HE-6, Susvara, HEDDphone beyond just okay to their full potential? keep 'em coming

Great review sir. How do you think this would pair with the Audeze LCD 4 headphones?

Will you be reviewing the Soloist 3 GT when that comes out? Honestly tempted for that upgrade.

Great review! I like Burson amplifiers. Would you say the Soloist SL is to the Soloist 3x, as what the Bottlehead Crack is to the Mainline? Cheers.

Hi, I know this is an old video but would you still recommend this headphone amp or is there something newer out that would be better sounding in this price range. I'm thinking of adding a headphone amp to my setup and am unfamiliar with current technologies. It would be in line with a Eversolo A8 which I'm currently using as my Preamp, DAC, and streamer and out to a power amp. Thanks for any feedback.

What about something like Mytek Liberty II AAA THX? How do you think Soloist 3X compares to top-level THX amps? I believe Liberty II is close to Benchmark THX amp and some even prefer it over the Benchmark THX. Having a hard time picking between the Liberty II amp and Soloist 3X...

Hi, Great review, i am actually going to buy one. I plan to use a denafrips ares 2 with it. Did you get the chance to listen with the Empyrean with this set-up in particular? thanks

Thomas posted the composer, wonder how that sounds in comparison to high end dacs

Hey Lachlan. I’m currently using the ath-ad2000 with the bifrost 2/jotunheim 2 combo and I think it’s very good. Also getting the zmf auteur soon. But how would you compare/contrast the jotunheim 2 with the burson?

Are there valid reasons to get this over the Topping A90d? To use with Neumann ndh 30. Specs wise, this headphone requires max 200mW of power. Practically for listening at safe levels, the power is much less than 200mW, which means I won't hear distortions at levels which I will listen to. That much I know. Thanks.

great review! looking at the power spec into 300ohms and it states only 150mw via SE! what is considered enough? this seems very low compared to a lot of alternative amps. i only buy high impedance headphones now as i also own an otl tube amp, hence my query.

Hello @PassionforSound , Great review, I just bought the soloist 3xp based on your review. Question please, do I use high gain for the zmf VC (300ohms) ?

Have you heard the Conductor 3x Performance yet? I'm wondering how it compares to this. They look very similar in teams of amp stage, but with the Conductor having a built in ESS DAC and streamer.

Thanks for another great and thoughtful review here. I may have to replace my Chord TT, because it’s being repaired, but it may not be repairable. I’ve been doing a lot of research on what’s out there, what I’m willing to spend, and the qualities of components that I like best. Right now, I am looking at getting the Soloist 3X along with the Denafrips Ares II. What are your thoughts on this pairing? And, any other recommendations for something different within a reasonable price range?

Hi Lachlan, great review. I have a Burson Conductor V2 amp and I was wondering if you feel there would be tangible benefit in going to the Soloist 3XP? My DAC is the Composor 3XP, and current headphones are LCD2 (2020), 660S, and Elegia. Quality interconnects.

how come no one talks about the mic inputs on them? I would actually like to know about these. Can you use them independently for microphone input while using the other headphone ports i.e the xlr or the 3.5

Hey Lachlan, would you say the Burson will be an upgrade to the THX-789? Or are they too different that you could keep both?

just ordered this amp with the bifrost 2, as you seem to have that as your optimal pairing for this if i'm not mistaken (at least for this price), i expect a sizable upgrade from my current jds el ii stack. i will be using this combo with a diana v2 vs clear mg to decide which one i keep (so far i am a bit torn, diana = more detailed but mg = more punchy imo). on that note, do you plan on reviewing either of these headphones in the future?

Picked up a used HE 1000 v2. Would that be a better match with the 3x over the Arya with the Bifrost 2? Also, have you tried Nightshift by the Commodores as a test track? Thank you for your time.

I picked the Soloist 3x Performance up for $650usd. Which opamp would you recommend me to pick up to further upgrade the sound? How does the Soloist compare to other amps around it’s price range

What headphones did you evaluate the 3XP's bass and stage depth with..? What equipment & phones offers the best 3D & depth that you've found so far?

The headphone amps I own are: Singxer SA-1, HeadAmp GS-X mini, and Topping A90. I would rate them in the order listed, with the Singxer clearly better than the other 2, even though the HeadAmp is class-A & about $2,000 (US). I'm tempted to try the Burson, considering their return policy. I don't think you have heard the Singxer, but how about the HeadAmp? Considering the build & sound quality of the Burson, shouldn't it be superior to the amps I have? My DAC is a Chord Qutest (with M Scaler).

Is it worth to upgrade from A90? Am using Arya and M17 as my DAC. In some tracks I feel a bit too cold with those combinations. And am looking for a warmer AMP/DAC.

Hi, I am guessing you didn't have time to try the Sparkos opamps in this device? I just bought one of these and I'm wondering if the Sparkos might partner well with it.

Thanks for an informative review. I'm now considering the Soloist for my lounge system, with Sennheiser HD600. Did you try the remote volume... is it responsive? How bulky is the PSU, and is it basically a mains-to-24V AC transformer, so should have(?) minimal power drain if left plugged in with the Soloist on standby? Any other head amp(s) (not a DAC/amp) with remote volume control you would recommend in the price bracket? Are you an owner yet?!

Hi Lachlan, I'm currently mid upgrade from my Sundara's with Topping E50/L50 stack to the Arya Stealth with a Burson Conductor 3X or possibly the Soloist and dac. I see that you recommended the Bifrost 2 below. Would you choose that with the Soloist over the Burson Composer Dac or would you seek out a used Chord qutest which are available for about €1,000 with light use. I"ll be buying some closed back headphones in the future such as the Aeon Noire by Dan Clark as my wife keeps commenting about how loud the open backs are but I just love the sound of the Arya's so will be mainly using those. Your input as always is much appreciated.

Lachlan, would this Soloist 3X or the GT version be good choices for the Empyrean?

Do you know the dimensions of the actual amp? Burson listed it at 35x30x15cm... but it doesn't seem near that big. I'm thinking that's the package dimensions? Also does the display orientate to vertical like some of the other Burson gear?

Please give me some advice on which is the best for the Audeze LCD-2C: Schiit Jotunheim multibit or Burson Audio Conductor 3x performance headphones?

How hot does this run? Extremely tempted to pick this up right now for the Black Friday deal based off your review! Never had a pure Class A amp before so I’m just worried it might get too warm.