Commercial CD or DAC Using CS4328 - diyAudio
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Old 2nd October 2004, 10:25 AM   #1
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Default Commercial CD or DAC Using CS4328

I'm trying to find something..CD player or DAC, based on the CS 4328..

Somebody can help me?

What kind of DAC used from Musical Fidelity on the X-ACT model?

Thanks to all.

Maurizio.
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Old 4th October 2004, 01:32 PM   #2
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My Quad 77 Cd player uses the CS4328 DAC.
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Old 4th October 2004, 09:19 PM   #3
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My X-DAC 3.0 and X-DAC 3.0 Signature used the CS4328. These are out of production as Crystal's CS4328 is long gone. Too bad as it was quite the tasty part with goodies like +-5v analog supplies for the analog stage which could drive 600 ohm pro loads directly. CAL, Entec, and Timbre Technologies also had very nice DACs using CS4328. These date from the mid-1990s when the CS4328 was SOTA.

Click the image to open in full size.

ACG's X-DAC 3.0 (historical info only, this product is NOT in production)
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Old 4th October 2004, 10:22 PM   #4
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Default Thanks Norman

Thanks Norman for ur reply.

Pls DO u have some PCB to sell? Cause i found a CS4328..

Can u help me?

Or do u have the scheme of ur X-DAC 3.0.?

Thanks,

Maurizio.
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Old 6th October 2004, 04:50 PM   #5
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California Audio Labs Alpha (original version, not 24 bit/96 kHz) and Meridian 263 are commercial production DACs using CS4328.

I have an Alpha that needed some power control repair, so I got to look over the PCB. CS4328 is buffered by a discrete op amp, first stage is single diff pair using VN0610 SS MOSFETs with simple bipolar current sink on sources and resistive load, second stage is current source loaded common emitter using MPSA05/55, output stage is 12AX7 with both halves in parallel as cathode follower with current sink load using bipolar IC op amp and MPSA05, DC servo using LM741 controls output DC voltage. IMHO the tube usage in this case is silly since the upstream SS dominates the sound, and the currents in the first stage wasn't balanced due to resistor values, tube rolling is probably of placebo value. If you have one of these and its original condition isn't sacred to you, I suggest replacing first stage with bipolar transistor pair with emitter resistors, and replace the tube with a suitable FET or bipolar darlington, remember that the tube uses +140 so connect drain or collector to +15. Also the follower current sink set resistor should be reduced, stock value gives about 2mA, I suggest 6 - 8mA. Sounds pretty clean with a DVD as digital source after mod, less grit and clearer soundstage but brighter/sharper treble.

If you insist on keeping the tube I suggest 12AV7/5965 with increased sink current, but more plate and filament power is needed, a resistor in series with filaments can be reduced to compensate but plate, filament regulator and power transformer run hotter and you may need to remove cover or drill holes in it. Sound is similar to transistor follower but a little less bright.

For digital in, Meridian 263 supposedly has PLL clock recovery, the Alpha is basic CS8412 with input buffer.
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Old 7th October 2004, 10:16 AM   #6
ergo is offline ergo  Estonia
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Default a bit offtopic but.....

Norman Tracy, what is the status of your XD0 project.

It is an interesting project but deciding on the info found on you web page it was never finished?

Ergo
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Old 7th October 2004, 10:43 AM   #7
Zombie is offline Zombie  Sweden
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Quad CD67 also uses it...
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Old 7th October 2004, 03:27 PM   #8
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Default More CS4328

The old CS4328 DAC chip is an interesting one indeed. Would like to play with one some day to compare with my Cambridge Audio CD-3; but they are rare and tweaking time is at a premium.

To add to your list:

Meridian 206.18 CD Player
Rotel RDP-980 DAC
McCormack DA-1 DAC

These all use the CS4328 as far as I know. From what I understand, with a well executed power supply (this is crucial) results with this DAC chip can be outstanding.

Hope this helps
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Old 7th October 2004, 03:45 PM   #9
x-pro is offline x-pro  United Kingdom
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Some more products with CS4328 - EMF Audio "Crystal" DAC and Creek Audio CD-42 CD-player

Cheers

x-pro
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Old 7th October 2004, 05:11 PM   #10
tvi is offline tvi  Australia
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You might want to check this tread
CS4328 Output Stage

Regards James
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