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Old 18th May 2010, 03:54 PM   #1
diyAudio Member
Join Date: Apr 2010
Default Building DAC with CS4397 and FETishizator

I'm planning on building a DAC based on this.

The one thing that has been wondering is - the CS4397 has a ~ 2.5V output if you grab just one of the differential outputs (i.e., R- and L-). That's already above the 2.0V send to most amps.

What would the gain be of the Fetishizator circuit and what output level should I be aiming for?
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Old 18th May 2010, 06:15 PM   #2
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Join Date: Apr 2010
I attach the FETishizator circuit.
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File Type: pdf DOCSTOR-#1942090-v2-JFET.PDF (90.1 KB, 191 views)
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Old 19th May 2010, 01:26 PM   #3
diyAudio Member
Join Date: Apr 2010
Come on least a few comments before I dive elbow deep into my soldering station.

Will this setup deliver the clean vacuum tube sound it purports to? I realize a voltage divider will be needed at the input to drop the signal a bit and I'm following the modifications detailed in the guide (lampizator web site) for a high level, voltage input.
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Old 19th May 2010, 02:47 PM   #4
leo is offline leo  United Kingdom
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Join Date: Jun 2003
Location: notts
Sorry I can't help, I was looking at the FETishizator a while ago but never got chance to try it, if you do try it please let us know what you think
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Old 19th May 2010, 10:24 PM   #5
Ciu is offline Ciu  France
diyAudio Member
Join Date: Feb 2005
Location: Northern France
Hello !
I think this output stage was made for a TDA1541 (output current )
R2 100 Ohms is the load
May be you coud try JR Broskie Cathode follower ?

A real (for voltage DAC) Balanced to SE output stage ...Not tested ...

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File Type: gif Dac_BalancedOutJfet.gif (4.0 KB, 269 views)
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