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DarkVoice 336SE OTL Headphone Amp

DarkVoice 336SE OTL Headphone Amp

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Massdrop x Sennheiser HD 6XX Headphones
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Drop Earpads for HD 6XX & 58X
Product Description
Headphone amplifiers come in a variety of circuit designs, each with its own advantages and drawbacks, but there’s one main determining faction: distortion level. Credited with having the lowest possible distortion, Output Transformer-Less (OTL) headphone amps cut out a key part of conventional amplifier design to eliminate a major cause of audible distortion Read More

Customer Reviews

4.3
(287 reviews)
5star
(174)
4star
(72)
3star
(9)
2star
(8)
1star
(24)
85% would recommend to a friend
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SkidMarc
85
Jan 12, 2019
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I purchased the DV at the recommendation of a co-worker who had previously enlightened me to Massdrop. I am a big fan of planar technology for speakers and the opportunity to pick up a pair of HE4xx at half the price of other high-end cans was enticing. Needless to say, no iPhone/iPad is going to power them adequately, so the AQ Dragonfly Red DAC (excellent and portable!) was purhchased. This ignited the desire to build-up a dedicated headphone “rig” for critical listening. However, I didn’t want to spend anywhere near what I’d invested in my main stereo setup!  Enter the Darkvoice 336SE. I was initially impressed with the sound but sensed there was plenty of room for improvement. The initial setup consisted of the DV and an old hi-end Sony disk player for a source while determining how I was going to actually use the DV. Settling on my iPad Pro/iPhone X as sources, I purchased a Schiit Modi3 DAC. It should be noted that I did quite a bit of reading on the DV while awaiting shipment. Many cited how the DV didn’t work well with their HE4xxx and other planar (low impedance - the HE4xx are rated at 49ohms) headphones. In my experience, nothing could be farther from the truth.  After three weeks of ownership, I was considering my options to improve the sound. There seems to be several options for upgrading the DV from tube rolling to internal mods like updating the caps and going to a better volume pot. The decision was made for me when my stock power tube failed. It was off to eBay where three power tubes were purchased (RCA 6AS7G, RCA 6080, and GE 6AS7GA), and two driver/output tubes (Tung Sol 6SN7GT “mouse ears” and 6SN7GTB).  I started with the 6080 with the stock 6SN7. Much improved sound. Fuller, especially in the bottom-end. However, it wasn’t a “open” as I would have liked. It should be noted that the Dragonfly Red was my baseline and I was looking to improve on its excellent sound. Going to the RCA 6AS7G - again with the stock tube, was a game-changer. Wow! I was met with a far broader and deeper soundstage with a separation of instruments that is the hallmark of planars. Bass and lower midrange was improved slightly, but there’s a definite upper mid-range bias. Curiosity getting the better of me, I plugged in the 6SN7GTB. This shifted the bias to the bass-end and, for me, it was too muddied and was decidedly less “open” than before. This setup epitomizes what folk refer to the “tube sound”. However, 6SN7GT “mouse ears” brought it home with a rich lower-end and a sparkle on the top end though more decidedly more “digital” in overall character. BTW, I was surprised that with all the changes in the tubes, only the GTB possessed any “hum” which dissipated over a few short hours. If you get into tube rollin’ with the DV, this is where I would start. The costs and availability of these tubes are excellent and you should be able to source them both from eBay for less than $75 for NOS pieces. What’s next? I have some other power tubes on the way: Tung Sol 5998A, GE 6AS7GA, and Tung Sol 7236 with the 5998A really piquing my interest. For now I’m going to let the RCA 6AS7G and Tung Sol 6SN7GT combo settle in more before any further evaluations.  I’ve never really been into “cans”. The Darkvoice 336SE (and the HE4xx) has changed my perception of headphone listening. For less than $600 invested (including headphones), I encourage anyone interested in trying a tube amp setup to give this a try!  -M
mindhead1
599
Nov 11, 2020
@SkidMarc Way to rejuvenate an old thread. I'm still enjoying my DV, but have not rolled any tubes since I settled on the RCA 6AS7 and Shuguang Treasure 6SN7 combo last year. I too have done the HE560 mod on my 4xx and find it to be an excellent upgrade. I highly recommend it. As for using the 4xx with the DV, I'm still not a fan. At this point, the 6xx are all I use with the DV. I listen primarily to Jazz, R&B, Blues, Classic Rock, and Blue Grass (this is recent for me, I love acoustic instruments played well). Thanks for the info on the Raspberry Pi streamer. I'm thinking of putting one of these together for fun. Also, considering a Bottlehead Crack build. I feed my DV with a Chromecast Audio, but there is no telling when Google will cut support for that so the I'm thinking the Raspberry Pi option would be a good replacement.
SkidMarc
85
Nov 12, 2020
mindhead1Glad to see that you are well and that your system suits you. I have completed the last of my upgrades for the foreseeable future (I hope). I sold the 4xx and replaced it with the Ananda and a bit later, a pair of custom Kennerton Vali. The Ananda is far better suited to the tubes than the 4xx and the depth and detail is amazing. The Kennertons are different -as I expected (and wanted) them to be being a bit less analytical. I recently replaced the Modi3 with a Modius and Magnius Schiit stack in part to satisfy my curiosity surrounding solid state performance and planar cans. It sounds nice, but it isn't the DV - though balanced is better than single ended by some margin. One last note, I'm using that Psvane 6SN7-se "globe". I found them to have more body and detail than the CV181-MKII (and just over half the cost!). Anyway, that should be it for awhile. One day, perhaps, a Feliks and next-level headphones... Lastly, I built a RPi4 streamer for $70 for a buddy of mine. Just sayin'. Good that we share similar musical interests (not Bluegrass). Be well my friend.
checkVerified Buyer
Just received my Darkvoice yesterday, about a month before the estimated ship date. I've been looking at buying this amp ever since I got my HD6XX since they apparently pair so well. I'm only one day into listening and I'm already impressed at the sound that comes out of this thing. Since my NOS tube order arrived the same day as my amp, I didn't even bother with the stock tubes, so I can't attest to how those work. I immediately replaced the power tube (large one) with a RCA 6AS7G and the pre-amp tube (smaller one) with a Tung-Sol 6SN7GT "mouse ears" (pictured below).
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There was no perceived hum, as many have noted with the stock tubes. The unit did develop a mild burning odor as it began to warm up over the first 20 or so minutes. This was fairly faint and I could only really smell it because I was sitting very close to the amp. After that, the smell disappeared and there have been no other issues since. I have my LP-120 turntable feeding the amp, and have only tried it out using the HD6XX and the pre-amp outs to my powered bookshelf monitors. I had previously been using the Schiit Vali 2 in this setup with a NOS Amperex 6JD8 "Bugleboy," which produced really nice sound paired with the HD6XX. However, upon listening to them with the fully tube powered OTL Darkvoice, these headphones really came alive. The music sounds beautifully accurate and detailed, and I would even venture to say that it lifts some of the "veil" commonly associated with the HD6XX and widens the soundstage. I just couldn't stop listening last night and was nearly brought to tears at one point, not from a sad song, but from the depth of sonic pleasure my ears were taking in. Of course, these impressions may have more to do with the tubes I rolled, however it speaks well for the Darkvoice being a fantastic platform for rolling different tubes into. I also purchased two other NOS 6SN7 tubes, a GE 6SN7GTB and RCA 6SN7GTB which I intend to try out as well. I am really looking forward to how the sound will develop more once I put some more hours into these tubes. However, I'm already extremely pleased with my purchase and would recommend it to anyone looking to venture down the rabbit hole that is tube rolling.
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(Update 12/10/18): After rolling in the two other NOS 6SN7 I had mentioned previously, the Tung-Sol mouse ears tube still remains my favorite for the types of music I enjoy, followed closely by the GE 6SN7GTB. I've since used the Darkvoice to power a set of Beyerdynamic DT-880. For me, the Darkvoice fixed everything I had initially disliked about the DT-880, which was mainly the piercing treble frequencies. The highs still sound clean and clear and the treble doesn't roll off nearly as much as the HD6XX, but the Darkvoice manages to really mellow out that brightness of the 880s. The Darkvoice also helps bring up the mids with the DT-880s, providing me with a relatively flat sounding headphone that offers more dynamic range than the HD6XX and is a good compliment to the 6XX's very mid forward sound. Since I have the 600 Ohm version of the DT-880 this is the only amp I own that can really drive them to their full potential, which is fine because they sound great on this amp. The only problem I've encountered is that with the 600 Ohm DT-880 the volume knob on the Darkvoice does very little past 11 o'clock and it can be cranked to max without having any real effect on the volume.
(Edited)
ohsigmachi
232
Nov 9, 2018
holocenehijinksIf you get a chance try a Silvertone 6SN7GTB driver tube (pre amp position). I've had mine for a year and haven't even had the itch to roll any others since I heard it!
JasonGuitar1974
10
May 15, 2020
ohsigmachiJust a friendly FYI, Silvertone is just a Sears RE-branded tube. It could be a GE, RCA, Sylvania, Tung-Sol, etc.
Chatto
96
Dec 12, 2018
checkVerified Buyer
I held off for a while because enough reviews mentioned quality issues, and opening up the unit and fixing internals, and that is way past my skill set. I had a problem, which is probably familiar to some members of the community ie, I had a pair of HD6XX s, and although my cth would power them, and I was happy with an O2 and a cheap douk tube amp and tube pre amp, I still felt the cans had more to give. Eventually, I bit the bullet, and got in on a DarkVoice drop. I thought that, even if it breaks down, it still looks geeky, and could just look cool on a shelf. If you're reading this, you've probably read the other reviews as well, so here's what's true in my case. No quality control issues with my unit (the power tube does have a small excess piece of glass in it, but that doesn't affect anything), and yes, the tubes do make a smell when you're burning them in, but for less than an hour, and I didn't get any smoking happening. The stuff you've read about it getting hot, is absolutely true: take care with your set up. Make sure you have room around your DarkVoice, because you don't want to touch it accidentally when it's hot ( if you like "arrested development", think cornballer), and if you have kids, they'll only touch it once. Once. Ok, quality, danger, but really, what we're all here for is the sound. Even with stock tube, the sound is great. I enjoyed the sound stage, liked the tube warmth, but the thing that got me, was how it made the music more 3d. I guess that just means that the imaging is good (my apologies to audiophiles if I use the wrong terminology, but you know what I mean). I put my HD6XX s through them, and, "oh, that's what they were talking about". Yes, if you have HD6XX s, stop reading this, and join the drop, and be happy ever after. Of course, thinking that, if this was good, throwing more money at it could only make it better, so back I went down the rabbit hole of tube rolling. I'd had success in tube rolling with the CTH (which benefits from it, but doesn't need it), and the douk amp and pre amp, so I did some research and got some tung-sols, and was happy with the result. My aune x7s came in shortly after, and I liked it, and then thought that there are RCA s on the DarkVoice so that it can be used as a pre amp, so I hooked this up to the aune. The difference was amazing, and the only way to describe it, and I'm para phrasing somebody else's description, is that, when I'd listened to stuff before, like on my th-x00s through the CTH, the music sounded great, and I was happy. Listening to the same music on HD6XX s through the aune x7s (I'm assuming any class A amp would be similar), with the DarkVoice as a pre amp, was like an experience. With my previous setting, it was like listening to the best recording, but with the DarkVoice set up, it was like being there. Honestly, it was 3 dimensional, and I was hearing things I hadn't heard before, like paper shuffling, discreet coughs, and even one recording which must have been a really good take, because I heard somebody carefully close the studio door as quietly as they could, and it stayed in the background of the recording. With this set up, and the HD6XX I thought I'd found my personal end game, and I was right for a few weeks, until yesterday, when my focal elex cans arrived. Those cans with this set up will have you having to listen to everything you've ever heard before, again, but that's another story, for the focal review. Long review, but long story short, yes, the DarkVoice is definately worth getting (especially if you have a HD6XX), yes, it will burn your house down and hurt you if you're not careful, and no, you won't regret it. If you've read this far, do it. You will eventually anyway.
Chatto
96
Jan 3, 2019
Not that I know of. There are outputs on the back of the DarkVoice specifically for it to be used as a pre amp. The DarkVoice doesn't use the power tubes in this mode, just the small tubes to colour the sound.
Paraglider
67
Jan 4, 2019
ChattoNot from the Schematic I've found for the DV. Preamp outs come after both tubes not just the 6SN7. I am testing using both outputs at the same time. If the signal for the preamp left before the 6080 Output tube then only 1 of the outputs would work at a time, but both pre and head outputs work at the same time.
Horseknight
179
Oct 13, 2018
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I received my Dark Voice a few days ago. Here is my initial review:
Upon arrival: Massdrop kept the delivery date promise. I received the item before the estimated date. Thanks! The Dark Voice and both tubes were well protected in its original foam pads within its shipping box.
Initial first 2 hours testing: The Dark Voice functions properly. I tested Dark Voice with HD-6XX (300 Ohm) and DT 800 (250 Ohm). They both sounded good but with the frequently mentioned left ear humming sound. The humming was very noticeable. Nevertheless, the sound from HD-6XX was really impressive.
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Waiting/Baking: To remove the common humming, I followed our Massdrop members’ recommendations and took out 6AS7 (larger tube) out and left only 6SN7 (smaller tube) installed and turned the Dark Voice on for about 50-60 hours. After that I added 6AS7 back to Dark Voice and turn on the Dark Voice again. The humming is about 90% gone. I expect the further use will eventually remove the humming.
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First day of the actual use of Dark Voice: I used to listen to HD-6XX & HD-600 on Topping DX7s with balanced cable. I thought HD-6XX was already very good back then. BUT NOW, pairing HD-6XX with Dark Voice (even with unbalanced cable & RCA input), I was SO IMPRESSED and SURPRISED how great this pair can reproduce beautiful music. Wider soundstage, much better low frequency response, crisp clear highs. Simply for this reason, Dark Voice is worth every dollar well spent.
After I switched to Hifiman planar headphones and Stax electrostatic headphones two years ago, I stopped using about 35 different dynamic driver headphones I owned. I tested about 12 of them with higher ohms, such as Sennheiser HD-600, HD-660s, HD-6XX, HD-58X, Beyerdynamic DT 880, JBL, AKG …even Superlux HD660 and Samson SR950. I have to say that Dark Voice gives these headphones very different and much more enjoyable sounds. I am so glad that I bought this Dark Voice.
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Protection Box: Since the Dark Voice & its tubes can get warm and breakable, I decided to place the Dark Voice in a protective box so that my very curious and naughty miniature poodle would not accidentally burn its cute fuzzy paws or face.
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Summary: If you are into music listening and have some headphones that you suspect they have not yet reached their full potential, Dark Voice is something worth your attention and investment. So far, I am very happy even with the original tubes. I think I will start tube rolling soon like many others are doing here. I give this Dark Voice 9.5/10. I highly recommend it.
Please also see my photos for Dark Voice & Halloween headphone holder.
Horseknight
179
Nov 2, 2018
So far, the box also prevents me a few times from accidentally dropping my heavy headphones (such as Audeze & Monolith) on the tubes as well. This afternoon, I also just posted my tube rolling update here, too. Thanks for your message & hope you are enjoying your DarkVoice as well.
Horseknight
179
Nov 2, 2018
HorseknightAn update for my first round of tube rolling (around $35 cost): I replaced the Shuguang (originally stocked) 6SN7 with Tung-Sol 6SN7GTB. Immediately sound improved. Especially the trebles turned clean and detailed. I can hear wider-spaced and delicate details.  Both Shuguang and Tung-Sol 6SN7GTB have loud hums at the beginning. It takes 48 hours of baking/burning-in for the stocked Shuguang 6SN7 to drop its humming.   
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Tung-Sol 6SN7GTB came with super loud humming at the beginning.I almost gave up this Tung-Sol tube the first day. . But after 60 hours (be patient) of burning-in, the humming sound completely disappeared except when you use the lower (<32 ohm dynamic drivers) ohm headphones. Also, Dark Voice works well with my planar headphones regardless ohms. It pushes the planar drivers from my Hifiman HE-560, HE-400i, Monolith, Audeze well and they sound full with details. 
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I replace the Shuguang (originally stocked) 6AS7 with GE 6AS7. To my surprise, GE 6AS7 brought down the bass output. So DO NOT throw away the stocked Shuguang 6AS7 cause it pairs very very well with Tung-Sol 6SN7GTB. I really enjoyed my entire headphone collections with my Dark Voice, especially with  Tung-Sol 6SN7GTB with the original Shuguang 6AS7. I will receive more tubes soon and will share my updates.
RVDIII
70
Nov 21, 2020
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After tube roll and break in. Nothing stopped the problems below. Original tubes and others did not stop the very loud right channel hum! NO WARRANTY AFTER DAY 30 NAD DROP SAYS: TOUGH LUCK BUDDY! YOUR OUT $200.00! -DAY 25 A LOUD HUM BUZZ IN THE RIGHT CHANNEL COMES AND GOES. -DAY 28 BUZZ AND HUM LOUDER AND MORE FREQUENT -DAY 33 CONTACTED DROP! DROP INFORMS ME! GOLLY GEE!!!! TOO BAD BUDDY! YOUR OVER 30 DAYS BY 3 DAYS SO WE WONT HELP YOU AND BY WAY: THIS RUN HAS NO WARRANTY SO TOUGH LUCK BUDDY!!!!! YOUR SCREWED OUT OF $200.00+ NEVER AGAIN FROM THESE INCOMPETENT THIEVES! BUY FROM AMAZON!!! THEY HAVE BETTER CUSTOMER SUPPORT AND THE WARRANTY IS WORTH THE EXTRA $50!
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(Edited)
Recommends this product? No
RVDIIIMaybe you need a power conditioner? It could be dirty electricity that is causing it.
RVDIII
70
Dec 3, 2020
vken27On one side???? Not likely!
DiMora
263
Feb 17, 2019
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Unit sounds amazing if you get rid of the Chinese tubes. However, after sales support is horrible. I bought two of them; one now has a defective R channel that clicks, pops and cuts out. It’s only 3 months old. I emailed MassDrop. Here is their reply: ————- Hi , Thank you for contacting Massdrop Community Support! I am sorry about your Darkvoice 336SE OTL Headphone Amp right channel not working correctly and I will do what I can to help. For products that do not have an included manufacturer's warranty, members have 30 days from the date of delivery to report an issue. For products that include a manufacturer's warranty, members must report an issue within the stated warranty period. After reviewing your transaction, it appears that the time-frame for reporting an issue has passed, which means we are not able to provide a replacement or facilitate a return. Thank you for your understanding of this policy. If we can help you with anything else in the future, please contact us. -Christina —————- Translated: Sorry, you’re screwed; we won’t do a damn thing after 30 days. Thanks for your understanding. Massdrop
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Comparison with Loxjie P20 Hybrid Amp -- Little Difference
Not sure what I was expecting with this headphone amp's sound. It is very heavy, well-built and looks extremely cool. It's an OTL type amp so it doesn't have the same full-tilt "toobe sound" as a non-OTL amp that employes expensive output transformers. I'm using it with several hard to drive headphones including the Senn HD650s and HiFiMan 400i. The stock tubes were replaced with a NOS Raytheon 6080 in the power section and a newly made Tung-Sol 6SN7GTB in the preamp section. In doing a careful level matched A/B test with a well made switcher I noticed very little difference between the sound of the DarkVoice (full tube) and the Loxjie P20 (hybrid solid-state + tubes). Try as I might, they both sound extremely similar to each other. The Loxjie P20 -- like the DarkVoice -- had the cheap Chinese tubes replaced with better quality tubes. There was ever so slightly more bass coming from the DarkVoice and the bass decay lingered around for a just a touch longer. Soundstage between the DarkVoice and the Loxjie were identical. Mids and highs, likewise, sounded exactly the same. Unless you do a carefully leveled, instantaneous A/B switch between amps you can be misled as to what is really happening to the sound. I'm not dissatisfied with the DarkVoice. It is well built and cool to look at. It definitely puts out more heat than my Loxjie P20 which only has two small tubes and is mostly solid state. The DarkVoice is also capable of putting out more power. However, I have to wonder if some of the claims regarding wonderful "tube sound" with the DarkVoice are more of a placebo effect. Afterall, it is only an OTL based tube amp without the "tube sound" benefit of output transformers. The hybrid Loxjie P20 gives a slight taste of tube goodness, too, but it is not that far from the sound of a good solid-state amp. Like I said, in my carefully matched testing the hybrid Loxjie P20 and the full tube DarkVoice sounded extremely similar. I hope to do some more A/B testing between the DarkVoice and a full solid state amp at a later date (probably with a Monoprice Liquid Spark). If you keep your "tube sound" expectations in check then the DarkVoice is a very good deal. As others have suggested, I'll probably place a laptop fan system under it to help dissipate the large amount of heat it generates. If you don't like the idea of using a high heat generating amp like the DarkVoice you might consider using the Loxjie P20 hybrid amp instead as the sound is very similar but the P20 puts out far less heat, requires far less power and costs half the price. However, the power supply included with the P20 is total junk and needs to be replaced with a much beefier and better built power supply. Adding a better power supply and putting in better tubes to the P20 lessens the price differential between these two headphone amp units. The Loxjie P20, however, can use balanced XLRs for both the inputs and outputs. The DarkVoice can only use unbalanced inputs and outputs.
Recommends this product? Yes
HIFI778
652
Sep 4, 2019
AudiophileHeadCaseWhat tubes did u use on the Loxjie? Are the stock tubes not soldered directly to the PCB or are easy to remove? Thsbk you!!
JoLamos
7
Oct 25, 2020
AudiophileHeadCaseThe Darkvoice costs $267 (inclusive of shipping cost to Australia). Loxjie P20 costs only ($94 after $5 discounts). If I add the 5A 12 V PSU, 4 Russian 6HN3P-E tubes, and a XLR cables. It is so much cheaper than the Darkvoice, particularly, I need to deal with exchange rates. I have pair the Loxjie P20 with Topping D10s. It sounds great to my taste. I have no issues to drive HD650 and Focal Elex.
G3n3r1c
216
Nov 11, 2021
checkVerified Buyer
The Darkvoice 336SE is an OTL amplifier. If you don't know what this means, learn about OTL designs and what they can do. This is not a general purpose amplifier, nor should it be your first headphone amp. It's meant for high impedance headphones and is ideal only for some of those. Do you homework before buying. Points of consideration: This is a traditional full tube amp, and it requires more thought and maintenance than a solid state amp or tube hybrid. If you are not patient and careful with things that can burn, electrocute, or cut, just move on. Tubes serve to smooth rough edges, adjust tone, and typically add harmonics/resonance. They thereby reprocess music sources, but the difference need not be dramatic or fit tube amp stereotypes. They need not be warm or thick sounding either. You must try for yourself and test with compatible hardware. This amp is inexpensive in the OTL market and has several obvious flaws. These include (1) a long and fragile power switch that wants to be broken, (2) a sensitive volume pot that reaches listening levels with a few millimeters of movement, and (3) a tendency to hum with replacement 6SN7 (front driver) tubes. The hum issues has been discussed to death in forums, with some advocating internal soldering and parts changes while others saying to burn in new tubes for 72 hours. No matter how you respond, expect hum headaches. My factory tubes never hummed, but most of my 6SN7s did or do continue to hum. The factory tubes DO NOT SUCK. They are fine and get in the ballpark of what an unmodified amp can do. In comparing with a variety of well known and common replacement tubes, they are about average versus the compatible options. DO NOT FALL FOR "NEW OLD STOCK" TUBE HYPE. Before you start swapping tubes, UPGRADE YOUR DAC. People seem to fixate on the most obvious point of change without considering how the amp interacts with other equipment. For this and other tube amps I've read plenty of comments about "cheap factory tubes, so I threw them away." In my testing I've found that new headphones amps reach the point where end users notice the limitations of their DACs, as hissy, whining, jittery, etc, and actually dislike the DAC rather than the tubes. Tube amps draw attention to tube swaps as the only logical fix, but new tubes often result in pretty minor changes. Instead, move away from Delta Sigma DACs to multibit if possible. With lower priced DACs I prefer iFi products (Burr Brown chips) as the least offensive option. This amp is named "Darkvoice" and has a naturally warm tone. This follows from the inherent character of 6SN7 tubes (as each tube tends to sound similar on another amp), and the factory design decisions. As such, I don't like or recommend this amp for already warm headphones such as the HD 6XX. I prefer it with neutral to bright headphones that benefit from the warmth (e.g., HD 600, HD 800 S, Beyerdynamic DT 880, etc). The Bottlehead Crack is designed as a brighter OTL amp and its stock setup pairs better with the HD 6XX. This amp serves well as a speaker preamp. When fed into a solid state amp or receiver, much of its smoothness and expansive stage comes across through the speakers.
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I.AM.ME
7
Nov 12, 2021
G3n3r1cYour* lol
I.AM.ME
7
Nov 12, 2021
G3n3r1cI think I found my new method of preferred hearing loss.
browncore
194
Feb 15, 2019
checkVerified Buyer
Complete junk. Mine has had a hum and random crackle noise since I got. Based on just about every review I read, this could be attributed to the crap tubes this thing comes with. After "rolling tubes", a process that takes time (ordering, burning in, repeating), I came to the conclusion that my unit is just defective. I am now fighting with Massdrop to offer some form of return and not having any luck. Edit: Massdrop will not do jack shit. I am done with them. Further info: Purchased the 110v model on Aug 20, 2018 for $213.24 (should have just burned my money) and was delivered on Sep 26, 2018.
(Edited)
Sensei820
20
Feb 23, 2019
Further test. I traced the Hum to the USB-c connector that my external monitor was connected to. With the lead disconnected the massive hum on both channels was gone. Also noticed that a slight hum was present on the left channel. When the AMP and dac was move away from all PC equipment the amp was dead quiet.
Partypooper81
49
Feb 23, 2019
Sensei820Thanks a lot for sharing this! I had no idea the tubes are so sensitive. Good to know for when I receive mine and experience a him. I hope you can find a convenient hum-free set up so you can start enjoying the amp in stead of moving/plugging/unplugging stuff ;-)
bloodpig
157
May 15, 2020
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My first and most loved tube amp
I bought this tube amp maybe year and a hapf before. Since i've owned him i started tube swapping and with every tube came a different nuance of sound representation. What a treat. The amped costed 250$ shipped to me and since than i've spent maybe 3-4 times that mount for different tubes :P Be aware! Once you start tube tube rolling, you never go back !
Recommends this product? Yes
LordSmashington
91
Jul 22, 2020
bloodpigMost true comment on the DV I have ever seen. Damn them tubes get pricey!
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