I did a blind test with someone who bought it, along with the Sabre U2 DAC:
I prefer the sound without isolator than with it.
With the isolator it seems to me that sound lacks power, especially with the low frequencies. This is subjective but done in blind test with consistent results.
Maybe the isolator limits the current available to the DAC? (thus the lack of power in sound) Or that isolator could be defective.
Could someone try this blind test with someone else who plug and unplug the isolator between the DAC and the PC ?
Nice sounding amp. The volume knob broke off on mine.
I had noise issues coming from my desktop PC USB ports. All of them. I was happy to find that my audio interface needed less than 200mA (it needs 150mA) so I decided to try this USB isolator. It works marvellously! I hear absolutely no noise. Even with my unplugged laptop I would get some noise but with this little device my audio is as crisp as can be with any computer I've tried it with. I'm so glad it solved my issues without shelling out legit cheddar on an industrial isolator.
I bought this small device some time ago, more from curiosity, never listen to any ESS Sabre chip dac before. I wasn't impressed first time I listened. I used to listen with Centrance DACMini and Audeze LCD2. I used DACMini as headphone amp with U2 as dac. I also tried with Westone W3 and I couldn't say I liked better as before.
In the meanwhile I acquired some AKG K340 and decided to try it again, since 3D imaging was the forte feature of K340 vs LCD2. This time I was really impressed by the U2 sound vs DACMini's dac. Even if micro details were less precise, the sound was better localized as soundstage, sound seems to flow naturally, with better depth. Comparing to U2, DACMini's dac appear to be more 2D than 3D.
wired into a smsl 32 volt smps feeding ipl s3 transmission line speakers with a sensitivity of about 88
words cannot say just how good this amp is but i will try
timing is amazing like naim without the bite
mid range is fantastically lucid and to die for
bass is large and very tight with a very large open sound stage
i was a bit concerned that power would be a problem but have not been able to turn volume past 12 o'clock in a 5 by 7 meter room
even at first switch when on i could hear no harshness or fatigue and it has only got better with more play
i used to dream of owning amps that sounded like this but could never afford the price tag
you could box this amp and sell it for 10x the price and it would still be a bargain
this is truly the golden age of hifi
A very good amp indeed!
Compared to another manufacturers' 4 Channel TK2050 board (which i used before & liked a lot) this one is quiet a step ahead!
Very good soundstage. Crisp, clear & unbribable. I'm also very satisfied with the resolution of details.
I'm actually using it hooked to a meanwell 350 VA power supply and it fits just fine. Empirically on connex supplies amps are a bit more "sinewy" driven tho', but this combo already is performing with a lot of spirit.
I could imagine some clarity caps px or esa at input section replacing the (already good) spirit mkp's would probably increase the sonics towards some more liquescent experience, but that's only my two cents ... anyways, the delivered configuration plays very neutral in best figurative sense!
Cheers & thanks!
the usb isolator works perfect. all noise is gone from the laptops' signal, so sound is crisp, clear and powerful. great job done on such a tiny device!
A fantastic product, and a real step up from the Android Sabre DAC I had before!
Very good sound for price, even better after mod. After comparing with referent design shematic for DAC chip I have replaced output foil capacitors with SMD ceramics and great amount of detail was emerged, though on some recordings now it sounds too bright. Compared with Micromega Mydac (after mentioned modification) I can't hear any difference, which is strange since they use different DAC chips.
Today I received my HIFIMEDIY SABRE U2 ASYNCHRONOUS USB DAC & HIFIMEDIY USB ISOLATOR,WOW this truly is a great DAC. I'm pleased I purchased the isolator with the DAC it is a must. It is like buying a new Amp,the sound quality is fantastic with full rich sound and clarity.All my music is in 24/48000Hz Flac and I can really appreciate the music now.It runs into a 100 watt RMS per channel amp driven into 12" woofers & 8" midrange & 6" dipole speakers.Mounted into 1/2" thick MDF enclosures I Made myself , so I am pretty happy with the performance of this DAC. I would recommend both products to anyone.I give it 5 STAR'S. Oh and the delivery to Australia was really fast.
Thank you so much for this DAC is a big improvement to the sound of my laptops. It is sufficient as well as my Beyerdynamic DT 990 PRO 250 ohm. Very fast delivery highly recommend it.
very nicce. small, comfortable, inexpensive and so on.
however, I connect Samsung Galaxy S3 (latest 4.4.4, kernel 3.0.31) with otg cable. And I can't any sound.
Mouse? Work. Keyboard? Work. Only dac don't work.
I found dac (Using TE7022) that don't work Galaxy S3. at least 3 dacs.
If use cell phone, rarely may didn't work.
excellent DAC, working steadily on the Lenovo p780 with usb audio player pro. High-quality sound.
Excellent product. Sound is really good, very good pair with my Sennheiser IE8. Sound quality is uncomparable to sound from integrated audio in my laptop. Really excellent product for its value. Shipping and delivery was also fast.
Wonderful little device. Use this mostly with a Google Nexus 7 2012 model running CM. Sound from my tablet is now so much better with this little dac. Have also tested it with laptop running Win 7 and a Chromebook, no problems with either. Considering what I paid for this it's been one of my best bang for buck audio purchases.