[duydangle]

Anyone has AD8610 and ADA4627-1B compared? I am really interested in ADA4627-1B but if the difference is minimal it's not worth the price.

 

[BleaK]

Anyone has AD8610 and ADA4627-1B compared? I am really interested in ADA4627-1B but if the difference is minimal it's not worth the price.

I have both and the ADA4627-1B is worth every cent in my opinion. Fuller bass, better stage and more natural sound.

 

[duydangle]

I have both and the ADA4627-1B is worth every cent in my opinion. Fuller bass, better stage and more natural sound.

thanks for your comment

 

[duydangle]

 
I have both and the ADA4627-1B is worth every cent in my opinion. Fuller bass, better stage and more natural sound.

Thanks for your comment. I just bought ADA4627-1B and it's exactly what I am looking for. Clarity is more improved from AD8610. Bass is improved, but not much from AD8610, which is very good. Treble and soundstage is much more improved. Worth every cents. I also have LME49990 and I think ADA4627-1B is much better.

 

[BleaK]

 
Thanks for your comment. I just bought ADA4627-1B and it's exactly what I am looking for. Clarity is more improved from AD8610. Bass is improved, but not much from AD8610, which is very good. Treble and soundstage is much more improved. Worth every cents. I also have LME49990 and I think ADA4627-1B is much better.

 

[HD_Dude]

My Leckerton Audio UHA-6S.MKII arrived today - and I am absolutely astounded.
 
First? The build quality is top-drawer. This is a beautiful piece of gear. Gorgeous. I bought the silver edition, and I find it to have a really tank-like build, as well as a nice solid feel to the volume knob, and a nice weight as well. Like a car door that slams with heft.
 
I bought mine with the stock AD 8610 op-amp selection. I'm no expert in those areas, so whether it's my Audio-gd Compass, or the Leckerton UHA-6S.MKII, I buy the default. Maybe someday I'll experiment, but not yet.
 
The sound? Awesome. I have a new pair of Senn HD650s, which I am currently burning in. Only 32 hours. But the difference with the Leckerton is astounding - already. Tight, deep bass, and extreme clarity.
 
Also, I tried it with my 8-year old Denon AH-D7000s, obviously burned-in years ago, and they sound absolutely heavenly. Deep, subwoofer-level bass, great soundstage and incredible clarity. Again,the sub hits hard with this combination. 'How low can you go?' is a good question here.
 
All the above were quick tests with my Sony VAIO laptop. Perfect. 
 
Also, the UHA-6S.MKII worked as a USB audio DAC/amp with my Note 2 and Xperia Tablet Z2. It's listed as a confirmed USB-DAC, and I'm glad to report it works perfectly:
 
http://www.head-fi.org/t/633201/confirmed-list-of-usb-dacs-for-the-galaxy-s3-international-us-or-note-2
 
Tomorrow, I'll hook it to the coax out of the Oppo BDP-93.I look forward to hearing it with a better audio source. 
 
It's a fascinating, great piece of gear. Very glad I found it, thanks to Head-Fi. 

 

[duydangle]

Delete for false impression, will update a new one when I have time.

 

[BleaK]

Yeah Op-amps can change the sound of this neat little amp, my pref. is the ADA4627-1B by far, but you might find other that will suit your music better.

 

[duydangle]

  Yeah Op-amps can change the sound of this neat little amp, my pref. is the ADA4627-1B by far, but you might find other that will suit your music better.

It also depends on your source of music and your headphone, because maybe when I switch to other headphone, I may have to change the opamp to suit my old/new taste of music . That's the price when you have an amp with opamp switchable. Otherwise you may have to choose a new amp when you want to switch to other headphone.
 
But I think there will be side effects like the amp is not optimized for all opamps so we cannot make any consumption about any opamps' sound signature. Switching opamp is like try a new taste, or switch to a new ingredient, not a different food like buy a new amp xD.

 

[Bugdozer]

With my old iBasso P4, I spent a lot of time swapping OPAs but I always seemed to settle back on the 8620.  I have been running the 8610's in my Leckerton but recently I ordered a set of 4627-1B from DigiKey and soldered them up.  Been using them for a bit over a week now and this morning I did some swapping OPAs using my HiFi Man HE500s..  I ended up settling on the 8610s again. I feel the 4627-1b seem a bit congested to me where the 8610s seen a bit more airy and opened.

 

[rzvnz]

I am considering a UHA-6S MKII (with ADA4627-1B) to pair with DX90 from iBasso -only as amp- , but I am not sure if there would really be an improvement (for  using  AKG-702, Sony MDR SA-5000, Grado SR 325i, Beyerdynamic DT-880 250ohm). What is your experience?

 

[Theogenes]

I am considering a UHA-6S MKII (with ADA4627-1B) to pair with DX90 from iBasso -only as amp- , but I am not sure if there would really be an improvement (for  using  AKG-702, Sony MDR SA-5000, Grado SR 325i, Beyerdynamic DT-880 250ohm). What is your experience?

I use the Leck with my DX50, and it's a definite improvement. Not sure about the DX90 though.

 

[Bugdozer]

With the AKGs and Grados, you might try an OPA627. Both those headphones are very forward and the 627 my smooth things a bit.

 

[Bugdozer]

I never tried the 4627-1Bs with my AKG702s or Grados but used the 8620 with them and didn't like that combo. 8620s work very well with Sen HD600 and HiFi Man HE500.

 

[headwhacker]

I am considering a UHA-6S MKII (with ADA4627-1B) to pair with DX90 from iBasso -only as amp- , but I am not sure if there would really be an improvement (for  using  AKG-702, Sony MDR SA-5000, Grado SR 325i, Beyerdynamic DT-880 250ohm). What is your experience?

 


UHA-6SMKII is not going to improve DX90. You will actually lose something if you stack DX90 with UHA-6SMKII in terms of power output. DX90's amp is capable of delivering more power and lower THD than what UHA-6SMKII can offer. The built-in amp of DX90 was built/design specifically so you don't need a stack to go with it.

To be honest most portable amp is virtually useless on DX90. The only time you need an amp is if you are driving power hungry cans the built-in amp can't properly drive.

Having said that, the Leckerton did an amazing job complementing my DX50. DX50's amp on paper is as powerful as DX90 but in practice it's lackluster and pairing it with UHA-6SMKII makes it a whole lotta better listening experience.

Pairing DX90 with UHA-6SMKII using my Roxanne sound similar when connected directly out of DX90's HO. The Leckerton actually doesn't sound as good as the HO when I use full-size cans like my Grado 325e and Beyer DT250. Also T1 sounds better albeit a bit underpowered directly out of the HO (@ high gain). Leckerton simply just can't drive T1 to an acceptable quality at lower volume. (But then it's not designed to drive 600-ohm cans).