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New Leckerton UHA-6S MKII Portable Headphone Amplifier Announced (Update User Impressions Added... - Page 24

post #346 of 2149
Quote:
Originally Posted by robm321 View Post

 

I was referring to the op-amp too. Not sure why you pointed that out? But I expanded to the DAC as well which is bypassed when its not being used, or do I have this wrong.

 

I mean that it is impossible to isolate the effect of the so called 'op-amp burn-in' because the other parts of the UHA 6S burn in as well whenever you use the device so the sound of the whole thing change. You won't know which change and how those changes interplay.

 

One can get another brand new pair of op-amps (same model and batch) and compare how different does it sound as compared to the used one. That will be to try to isolate the effect of 'op-amp burn-in' =)

 

Quote:
Originally Posted by Anaxilus View Post

 

You aren't using the headphone out from the Clip+ solely for comparisons I hope?  

 

Haha no. I have just received the Clip+ and the IC so I was letting both run in together with the UHA6SII when I was taking that photo. I bought the Clip+ for fun only ;)

 

For comparison, I will solely be using direct USB out from my Macbook Pro versus USB --> U3 --> Coax to see how the USB receiver on the UHA6SII fares against its SPDIF input, holding the source constant (which is my Macbook Pro).

post #347 of 2149
Quote:
Originally Posted by uelover View Post

 

I mean that it is impossible to isolate the effect of the so called 'op-amp burn-in' because the other parts of the UHA 6S burn in as well whenever you use the device so the sound of the whole thing change. You won't know which change and how those changes interplay.

 

One can get another brand new pair of op-amps (same model and batch) and compare how different does it sound as compared to the used one. That will be to try to isolate the effect of 'op-amp burn-in' =)

 

 

Haha no. I have just received the Clip+ and the IC so I was letting both run in together with the UHA6SII when I was taking that photo. I bought the Clip+ for fun only ;)

 

For comparison, I will solely be using direct USB out from my Macbook Pro versus USB --> U3 --> Coax to see how the USB receiver on the UHA6SII fares against its SPDIF input, holding the source constant (which is my Macbook Pro).


UElover I used the UHA6 MKII for 200+ hours before I even put in Op-Amp 209 and well over 300 hours before I put in Op-Amp 627AP. I did hear changes on both with usage. So it's not impossible to test this out. You could always burn you amp in first using one set of Op-Amps and then see if you can hear further changes after with the other set, which I did.

post #348 of 2149
Thread Starter 

@uelover

 

If you don't mind I'm going to hold off updating the first post with your initial impressions until you've posted your final impressions. Once those are up I'll combine the two into a 2 part impression.

post #349 of 2149

I am expecting the UHA-6S.MKII  this week and interested in finding a DAP that has a S/PDIF output, preferably not a Cowon. I was considering an ipod Touch, but would prefer to take advantage of the DAC in the UHA.

post #350 of 2149
Quote:
Originally Posted by olear View Post

I am expecting the UHA-6S.MKII  this week and interested in finding a DAP that has a S/PDIF output, preferably not a Cowon. I was considering an ipod Touch, but would prefer to take advantage of the DAC in the UHA.

 

We're waiting to see what happens w/ the Fiio X3.

post #351 of 2149
Quote:
Originally Posted by Anaxilus View Post

 

We're waiting to see what happens w/ the Fiio X3.

Sounds like it might be a while before the X3.

Does Sony or Cowon make a DAP that has a SPDIF out?

post #352 of 2149
Quote:
Originally Posted by olear View Post

Sounds like it might be a while before the X3.

Does Sony or Cowon make a DAP that has a SPDIF out?


No. Only Q350, ibasso DX100, irivers discontinued flagship. Hifiman 801 may have it as well. I'm not sure. I'm sure the 901 will have it though.

post #353 of 2149
Quote:
Originally Posted by uelover View Post

 

I mean that it is impossible to isolate the effect of the so called 'op-amp burn-in' because the other parts of the UHA 6S burn in as well whenever you use the device so the sound of the whole thing change. You won't know which change and how those changes interplay.

 

One can get another brand new pair of op-amps (same model and batch) and compare how different does it sound as compared to the used one. That will be to try to isolate the effect of 'op-amp burn-in' =)

 

Oh, I see what you mean.

 

This amp/dac will set me up for a long while. I'm still surprised at how good it is for the price.

post #354 of 2149
Thread Starter 
Quote:
Originally Posted by Anaxilus View Post

 

We're waiting to see what happens w/ the Fiio X3.


+1

post #355 of 2149
Quote:
Originally Posted by DigitalFreak View Post

@uelover

 

If you don't mind I'm going to hold off updating the first post with your initial impressions until you've posted your final impressions. Once those are up I'll combine the two into a 2 part impression.

 

Sure. No hurry to update the first post on anything =)

 

Quote:
Originally Posted by robm321 View Post

 

This amp/dac will set me up for a long while. I'm still surprised at how good it is for the price.

 

Yes, the internal amp especially is really an excellent performer. The DAC is a good addition.

post #356 of 2149

So...How does this do with the HD600? Can anyone compare the ODAC/O2 w/ the Leckerton with the HD600? I was totally set on this when I was going to have use a Westone 4 with it...but then I started thinking that maybe I'd like a HD600 instead (or maybe both...) 

post #357 of 2149

It should be powerful enough to drive the 600s. Considering portability it is an excellent amp.
 

post #358 of 2149
Quote:
Originally Posted by imackler View Post

So...How does this do with the HD600? Can anyone compare the ODAC/O2 w/ the Leckerton with the HD600? I was totally set on this when I was going to have use a Westone 4 with it...but then I started thinking that maybe I'd like a HD600 instead (or maybe both...) 

I have HD600 and just received UHA-6S.MII although I haven't tried them out yet. I will report back tonight.

post #359 of 2149
Quote:
Originally Posted by olear View Post

I have HD600 and just received UHA-6S.MII although I haven't tried them out yet. I will report back tonight.

Sounds good! 

post #360 of 2149
Quote:
Originally Posted by imackler View Post

Sounds good! 

With a RB Clip+, UHA, low gain, volume knob at 1:00 the HD600 sing.  The UHA is definitely more powerful with greater punch and over all  better sounding than the C421.

If I set the gain to high, I can only turn the volume knob a few degrees up as it gets way too loud. 

 

For those that have this amp/dac, is it better to get a coaxal cable and put one end in the HO of the Clip and the other end in the UHA COAX? Now a 3.5mm cable goes from the Clip HO to the UHA input.

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Head-Fi.org › Forums › Equipment Forums › Portable Headphone Amps › New Leckerton UHA-6S MKII Portable Headphone Amplifier Announced (Update User Impressions Added July 20th 2012)