DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 180 - diyAudio
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Old 16th May 2012, 07:38 PM   #1791
Tenson is offline Tenson  United Kingdom
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Off topic, but you should be able to find imperial sized material online.
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Old 16th May 2012, 07:50 PM   #1792
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I followed Dario's BOM (thanks Dario) as close as I could and I am not at all dissapointed.
You're welcome, Bill

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Old 17th May 2012, 04:52 PM   #1793
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Hi
I am awaiting the arrival of a Quad 33 pre-amp to use with my 4396 dac.
The quad needs at least 10db attenuation from the cd player output.
As the dac will be in between, is there anything I can do to attenuate the dac.
Or will I need to, don't know how the output compares to a cd player.

cheers
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Old 17th May 2012, 08:12 PM   #1794
TheGimp is offline TheGimp  United States
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your two options are (1) external attenuator, or (2) modify the DAC to operate in serial control mode using the serial interface on pins CNS (8), CCLK (10), and CDTI (11).

Serial mode will require lifting several pins, changing control settings and hooking up to a controller to talk to the AK4393.

This is a potential source of noise introduction.

Has anyone done this?


Correction, you can only add an external attenuator.

Apparently not since the AK4393 does not support volume control (AK4396 does).

Last edited by TheGimp; 17th May 2012 at 08:24 PM.
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Old 17th May 2012, 08:21 PM   #1795
bcmbob is offline bcmbob  United States
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J baldam,

Doesn't the CD player have digital out? If you are using just audio signals take a look here for a simple solution that has worked for me.
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Old 17th May 2012, 08:26 PM   #1796
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Hi, thanks, looks like an external attenuator then.
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Originally Posted by bcmbob View Post
J baldam,

Doesn't the CD player have digital out? If you are using just audio signals take a look here for a simple solution that has worked for me.
Hi Bob, Is that a variable attenuator using a pot.
GF factor would be a no-no, I'm afraid.
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Old 17th May 2012, 08:42 PM   #1797
bcmbob is offline bcmbob  United States
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This is the item in the picture. The only thing special about it are the staggered plates as seen in the description. Well made and inexpensive.

DACT Type 21 Stepped Attenuator / Volume 20K for PreAmp | eBay
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Old 17th May 2012, 09:54 PM   #1798
macklij is offline macklij  United Kingdom
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Originally Posted by billo44 View Post
My DAC has been up and running for a few weeks now and sounding really good to my ears (tested OK at recent medical). Playing from CD through a shigaclone CD transport into a myref revC ultimate amp into Yamaha NS-10 speakers (near field listening (in the shed)).
The NS-10 are a bit weak in the bass normally but I am finding this DAC is really surprisingly good. Not missing bass punch at all though this does also depend on music preference to some extent.
...
Bill
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Originally Posted by 68Spider View Post
It's a great chance to try out a bunch of different op-amps to see if there is one that gives you balance that you are after. I was quite surprised at the bass weight that came out of a lowly TL072CP, unfortunately it didn't have the clarity or soundstage of more exotic types.
Thanks both. I've decided to build this DAC (with Dario's mods). I'll report back in a couple of weeks or so.
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Old 17th May 2012, 10:08 PM   #1799
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Quote:
Originally Posted by j baldam View Post
Hi
I am awaiting the arrival of a Quad 33 pre-amp to use with my 4396 dac.
The quad needs at least 10db attenuation from the cd player output.
As the dac will be in between, is there anything I can do to attenuate the dac.
Or will I need to, don't know how the output compares to a cd player.
I run my 4396 DAC into a Quad 33 without any problem, you just don't get to use the whole range on the volume control - not a big deal.

If you haven't already rebuilt it (those electrolytics will be well dried out by now, one of mine exploded) then you may want to look at the DaDa kit. They have instructions on modifying the Quad to have a higher voltage rail for stability and also drop the overall gain to suit CD inputs.
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Old 19th May 2012, 08:06 PM   #1800
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Originally Posted by 68Spider View Post
I run my 4396 DAC into a Quad 33 without any problem, you just don't get to use the whole range on the volume control - not a big deal.

If you haven't already rebuilt it (those electrolytics will be well dried out by now, one of mine exploded) then you may want to look at the DaDa kit. They have instructions on modifying the Quad to have a higher voltage rail for stability and also drop the overall gain to suit CD inputs.
Hi Spider,
Good to hear someone else has chosen the 33 with this dac.
It arrives Tuesday and the first thing after a quick listen, will be the DaDa kit and as you say the voltage mod. I'll buy some attenuators as well.

I have just spent a very nervous hour soldering two OPA827s to an adapter

Just plugged it in and to my surprise it works.
First impressions are extremely good, I can hear a very marked improvement even through the Marantz theatre amp I am forced to use whilst my Linn LK280 is being looked at. Definitely worth doing.
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