AVCC 2.1 - module update - Page 6

BrianDonegan · 15th November 2012, 11:44 AM

Quote:

Originally Posted by cotdt

is this the same AVCC that comes with the current Buffalo 3 kits?

Yes.

4est · 15th November 2012, 12:17 PM

Quote:

Originally Posted by barrows

We agree on this upgrade

. I put the new AVCC in my DAC at the end of last week and the improvement was far from subtle...
When I get my nCore set up going again I will be interested to see if this new AVCC helps solve the RF pick up problem I was getting from my USB inteface I2S wiring. My Pass amp does not exhibit the problem...

Ha!

I think we agree on more than what might be readily apparent- this hobby is fraught with trade offs and assumptions.

glt · 15th November 2012, 02:21 PM

I have ordered the new version as well. But what to do with the perfectly working "old" one?
I would like to use it in the OPUS DAC, thus needing to change one leg to 5V. Doable?

Quote:

Originally Posted by glt

Hi Russ/Brian,

How to adjust the output: (eg 5V for OPUS)

avr300 · 15th November 2012, 04:43 PM

Start by changing the OPAMP to OPA2209

compressit · 16th November 2012, 12:41 PM

Mine actually was un impressive for a few minutes, took some time to settle. Very nice now though.

Russ White · 18th November 2012, 01:44 PM

Quote:

Originally Posted by glt

I have ordered the new version as well. But what to do with the perfectly working "old" one?
I would like to use it in the OPUS DAC, thus needing to change one leg to 5V. Doable?

No - unfortunately changing the output to 5V is not really practical with the old version on which you would have to change the opamp and a few resistors - but even then it probably would not work well because it was not designed for that.

If your keen to try it I can give you some guidance privately. It would be no small undertaking.

On the new version you could probably do it just by changing 3 resistors. I could calculate those for you if you know what your input voltage range will be.

Cheers!
Russ

shoom · 20th November 2012, 09:25 AM

Hi Brian/Russ

my new AVCC Arrived in this morning’s post.

WOW that was quick.

I’ll post some thoughts once I have her plugged in and warmed up.
Thanks

4est · 20th November 2012, 02:18 PM

Quote:

Originally Posted by shoom

Hi Brian/Russ

my new AVCC Arrived in this morning’s post.

WOW that was quick.

I’ll post some thoughts once I have her plugged in and warmed up.
Thanks

Grab a drink, and get ready for a treat!

Erlend Sæterdal · 20th November 2012, 02:22 PM

Got mine to supersonic delivery.

shoom · 20th November 2012, 02:34 PM

I’ve had BuffaloIII with new AVCC playing for several hours now and agree with previous posts.
The lift in clarity and detail retrieval is far from subtle and the overall improvement it made to the sound was obvious.

Not that the original was any slouch but the new AVCC is just better.
It’s sounding really, really good.

The best $40 I’ve spent in quite some time and as 4est put it ‘’a real no brainer’’.
Thanks Russ/Brian

16th November 2012, 12:41 PM	#55
compressit diyAudio Member Join Date: Jan 2006 Location: Hudson Valley in New York	AVCC 2.1 !!!!! Mine actually was un impressive for a few minutes, took some time to settle. Very nice now though. __________________ Never ending quest to get the noise out

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15th November 2012, 04:43 PM	#54
avr300 diyAudio Member Join Date: Sep 2005 Location: DK	Start by changing the OPAMP to OPA2209

20th November 2012, 09:25 AM	#57
shoom diyAudio Member Join Date: Jul 2010 Location: Worcestershire	Hi Brian/Russ my new AVCC Arrived in this morning’s post. WOW that was quick. I’ll post some thoughts once I have her plugged in and warmed up. Thanks

20th November 2012, 02:22 PM	#59
Erlend Sæterdal diyAudio Member Join Date: Mar 2007	Got mine to supersonic delivery.

20th November 2012, 02:34 PM	#60
shoom diyAudio Member Join Date: Jul 2010 Location: Worcestershire	I’ve had BuffaloIII with new AVCC playing for several hours now and agree with previous posts. The lift in clarity and detail retrieval is far from subtle and the overall improvement it made to the sound was obvious. Not that the original was any slouch but the new AVCC is just better. It’s sounding really, really good. The best $40 I’ve spent in quite some time and as 4est put it ‘’a real no brainer’’. Thanks Russ/Brian