[Psymon]

Just a bit of info, if people end op in this thread looking at this amp.
I ended up returning mine, cause the DAC was emitting a high pitched buzz whenever connected, and the volumepot, had quite a bit of imbalance and noise. This was really bad on sensitive headphones and IEM's.

 

[robakri]

I have been eyeing this: http://www.ebay.co.uk/itm/HA-info-U2-Plus-V2-AD1852-USB-Sound-Card-DAC-Headphone-Amp-U2-/261156704057?pt=UK_AudioTVElectronics_HomeAudioHiFi_Amplifiers&hash=item3cce270f39#shId
 
has anybody had this exact model or purchased from this seller?
 
I too am looking to drive a HI 2050

 

[Psymon]

I orderer that model from them,returned it as described. Seller provided fast communication and excellent service. But my experience is that it's a bad match with the 2050. Could have Been a faulty model, so you could try it out and see if it works.

 

[Andee1310]

has anyone ever order HA info U2 plus2 from this site..http://www.ab-system.hk/index.php?route=product/category&path=73

 

[funkoid]

Can you guys confirm the spec of yours? I'm looking at one of these at the moment but its reported to come with the following components?
 

1. USB： PC2001 USB-B (Plug and Play & Support ASIO)
2. TENOR TE7022L usb reciever chip, supporting native 24bit 96Khz
3. AD1852 DAC
4. TPA6120A2 Headphone Amp chip
5. opamp : JRC5532DD

 
Any thoughts?

 

[forestitalia]

This is the cheapest amplifier I've ever had......and is unbelievable good!

 

[Arvan]

Waking this Thread to life to say that i just ordered one of these, the new version with an OPA2134. Looking forward to see how this little "all in one" unit sounds. 

 

[DanBa]

The "HA Info U2 Plus" should be able to work with a lot of Android smartphones / tablets, because the "HA Info U2" is reportedly working with a Samsung Galaxy Note 3:
http://www.tellementnomade.org/forum/viewtopic.php?p=181534&sid=c43fa8fddd10ea80745e1f56f4e11a70#p181534
 
Galaxy Note 3 >> USB OTG cable >> HA Info U2 >> AudioLab M-DAC >> headphones
 

 
The Android-powered Galaxy Note 3 has a native USB audio feature.
For Android devices which don't have a native USB audio feature, the USB Audio Player PRO (UAPP) app including its own USB audio soft driver could allow the Android device to work with a USB DAC like the "HA info U2 Plus".
http://www.head-fi.org/t/638387/best-android-music-player-app/240#post_10120655
There is a free trial version of UAPP available on Google Play store.

 

[Arvan]

I just got the U2plusv2.. Some hiss at low volume. the volume pot is not very linear. And I cant get it to play any high res audio. 24/96 with wasapi and foobar2k is a no go. Also does not shot anymore then 16/48 in windows. It sounds good though, just not at advertised

 

[thompo]

Same experience here

  I just got the U2plusv2.. Some hiss at low volume. the volume pot is not very linear. And I cant get it to play any high res audio. 24/96 with wasapi and foobar2k is a no go. Also does not shot anymore then 16/48 in windows. It sounds good though, just not at advertised

Same experience here... Hissing sound and no 24/96. The seller (bigbargainonline) has changed the description since I ordered. Also some noise when turning the knob, occuring past 11 o'clock.

 

[forestitalia]

  Can you guys confirm the spec of yours? I'm looking at one of these at the moment but its reported to come with the following components?
 

1. USB： PC2001 USB-B (Plug and Play & Support ASIO)
2. TENOR TE7022L usb reciever chip, supporting native 24bit 96Khz
3. AD1852 DAC
4. TPA6120A2 Headphone Amp chip
5. opamp : JRC5532DD

 
Any thoughts?

Yes, and after tried some Opa I'm back to the JRC5532.

 

[zaxdad]

Hi All.
Happy and Healthy New Year. Have a question.I was thinking about picking up one of these amps from Amazon. Noticed a V2s version on ebay. Don't know if the amazon one is the v2s version. Don't know if it matters? I was thinking of matching it with a pair of Taskar 2050.  I want a good inexpensive combo. I'm a little over 60 years old so I definitely have some high frequency loss.
Any info or input would be appreciated.
Thanks,
Howard

 

[Mr Vicarious]

None

 

[prnmrc98]

  I just got the U2plusv2.. Some hiss at low volume. the volume pot is not very linear. And I cant get it to play any high res audio. 24/96 with wasapi and foobar2k is a no go. Also does not shot anymore then 16/48 in windows. It sounds good though, just not at advertised

Does anyone know how to solve this problem? Maybe it needs a driver?

 

[Arvan]

  Does anyone know how to solve this problem? Maybe it needs a driver?

 
Tried it with the driver.. No go! However i was told it should to 24/96 through a phone. It matches quite good with high impedance headphones. Sounds good as a dac only as well. Don´t know how it stacks up to the Fiio E10k, never heard that unit with my own ears but i see the response is quite different.