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New Leckerton UHA760 Coming Soon!! - Page 6

post #76 of 118
Quote:
Originally Posted by eyal1983 View Post

Guys
on my 6smk2 i replaced the OPAMPs
but on this unit, the OPAMPs are soldiered !
Correct, they are.
post #77 of 118
Quote:
Originally Posted by FlySweep View Post
 

I've had the 760 for almost two weeks now.. my 760 has the ADA4627-BRZ opamps.  In the past, I've owned two 6S MKII's (one w/ the OPA209.. and another w/ ADA4627-ARZ).  I much preferred the 4627 to the 209 in the 6S MKII.. so much so that when it came time to purchase another amp (the wonderful Neco Soundlab V4), I had the ADA4627 installed in it as well.. just so you know where my preferences lay.  I may be getting a 6S on loan.. but going off memory (so take this with a grain of salt), the 760's DAC section seems to sound virtually the same as the 6S MKII's DAC section.  Again, I'm going totally off memory.. but having spent a lot of time with the 6S, I don't seem to sense any large difference (either positive or negative) vs the 6S's DAC.  Generally speaking, I found the 6S (and 760's) DAC section quite serviceable.. not the last word in resolution.. but in terms of having a bundled DAC with an amp section that's the 'star of the show,' the DAC held up quite well.  I did find the 760 noticeably scales up with a better DAC (in my case, I tossed the Vio V800 at it).

 

Moving onto the amp sections (comparing the 6S' 4627A vs the 760's 4627B).. again, the 760's amp section seems very similar to the 6S'.  My 760's amp section (w/ the 4627B) seems a little transparent.. perhaps a little more refined.. and more dynamic than how I remember the 6S' 4627A sounding.. but being that these two opamps are very similar, I wouldn't expect much difference.  From what I understand, the BRZ's datasheet indicates slightly better specs than the ARZ.

 

General sonic impressions?  Like the 6S, the 760 is a wonderful amp.  Very very transparent, fast, dynamic, and tonally accurate.  Frighteningly silent background.. terrific control, and smooth dynamics.  I use the 760 almost exclusively with the UERM & JH13Pro.. the combo sounds nothing short of phenomenal.  I'll echo @shotgunshane's opinion that it pairs exceptionally well with the JH13.. but the UERM/760 pairing was eye-popping for me.  I've had the UERM & JH13Pro for some time and I can't choose a favorite between them.  They're both considered neutral phones, but also tend to compliment each other perfectly (the UERM being neutral to slightly bright.. while the JH13 leans to the warm side of neutral).

 

Running both through the paces with the 760, the UERM has revealed itself to be my favorite IEM to date.  The JH13 certainly isn't going anywhere.. in some areas, it's more technically capable than the UERM.. but IME, the UERM with the 760 (ADA4627-BRZ) & a HQ, dedicated DAC makes for one of the most compelling listens in all of audio.  Back to the 760.. I think it offers a ton of sound for the price I paid ($379).  While the SQ of the amp section is marginally better than the 6S MKII (a near perfect portable amp as it is, IMO).. the digital pot (especially if you use IEMs), three gain levels (again, especially if you use IEMs), and crossfeed make the 760's $100 premium more than worth it for me.

Do you hear any background hiss on all 3 gain setting with the volume turned all the way up to max and with no music playing on your JH13s? 

post #78 of 118
Even if you do get some hiss with no music playing, why should it matter? Hiss is only a problem if you can hear it when actually listening to music. I get some hiss with my Centrance HiFi M8 when using iems, but it isn't noticeable while music is playing. The M8 is optimized for powering full size headphones, though, so the gain is higher and is expected. My 6s MkII has a black background with all of my iems.
post #79 of 118
Quote:
Originally Posted by SDBiotek View Post

Even if you do get some hiss with no music playing, why should it matter? Hiss is only a problem if you can hear it when actually listening to music. I get some hiss with my Centrance HiFi M8 when using iems, but it isn't noticeable while music is playing. The M8 is optimized for powering full size headphones, though, so the gain is higher and is expected. My 6s MkII has a black background with all of my iems.

It matters because a lot of music I listen to involves some quiet passages. I would of expected the HIfI M8 to be hiss free like the dacport. 

post #80 of 118

I can hear a very slight hiss on the high gain. On low gain it is completely black. With medium gain its pretty much black as well.


Edited by lee730 - 3/3/14 at 12:31am
post #81 of 118
Quote:
Originally Posted by lee730 View Post
 

I can hear a very slight hiss on the high gain. On low gain it is completely black. With medium gain its pretty much black as well.

Thanks. So on high gain, does the hiss increases as you turn the volume up or stay at a constant level.  

post #82 of 118
Quote:
Originally Posted by Fungus View Post

Thanks. So on high gain, does the hiss increases as you turn the volume up or stay at a constant level.  
Just a guess on my part, but I can't imagine anyone needing to use high gain to power iems. My Noble K10s have a black background on my 6S MkII on low gain, whose amp section is similar to that on the UHA 760. The low gain setting on the UHA 760 was probably designed with iems in mind. I do not think hiss will be an issue with any iem and the 760, but contact Nick at the Leckerton website and ask him directly if you need additional assurance.
post #83 of 118
Quote:
Originally Posted by Fungus View Post
 

Thanks. So on high gain, does the hiss increases as you turn the volume up or stay at a constant level.  

 

It stays the same from what I can tell. But you'd go def way before that would become an issues anyways. I get to about a quarter volume on high gain at most on my IEMs.

 

Mine is also up for grabs if you like ;).

post #84 of 118
Quote:
Originally Posted by lee730 View Post
 

 

It stays the same from what I can tell. But you'd go def way before that would become an issues anyways. I get to about a quarter volume on high gain at most on my IEMs.

 

Mine is also up for grabs if you like ;).

Interested. So how much are you looking for? Please send me a pm. 

post #85 of 118

I dare you to find someone complaining about hiss on this amp. impossibru!!!!!!!!! cleaner would mean removing part of the music itself. and I'm a guy whining on noises others don't seem to hear(dx50, f886, ...).

post #86 of 118

Woooow, the 760 is a nice match with my re-272's.  Very nice soundstage all around, and also deep.  The 6s mk.2 was a little dry for me but I'm liking what I'm hearing from the 760.  Wish it had longer battery life though.  I'd pay something extra to be able to have this in a bigger case with a large battery.  Source is LG G2, usb out.

post #87 of 118

Glad you like it! Don't forget to leave me feedback and I'll do the same for you :).

post #88 of 118
Quote:
Originally Posted by Uchiya View Post
 

Woooow, the 760 is a nice match with my re-272's.  Very nice soundstage all around, and also deep.  The 6s mk.2 was a little dry for me but I'm liking what I'm hearing from the 760.  Wish it had longer battery life though.  I'd pay something extra to be able to have this in a bigger case with a large battery.  Source is LG G2, usb out.

 

You must be comparing 2 different opamps. 760 and 6S share the same amp design.

post #89 of 118
Quote:
Originally Posted by headwhacker View Post
 

 

You must be comparing 2 different opamps. 760 and 6S share the same amp design.

 

There is differences in the design overall though including the power supply. He improved upon that on the 760. Cleaner soound, lower noise floor to my knowledge. Read the specs on his site.

post #90 of 118
Quote:
Originally Posted by lee730 View Post
 

 

There is differences in the design overall though including the power supply. He improved upon that on the 760. Cleaner soound, lower noise floor to my knowledge. Read the specs on his site.

This.

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