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 Post subject: DAC output stage
PostPosted: September 18th, 2019, 9:48 pm 
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Joined: July 17th, 2016, 6:24 am
Posts: 637
In 2001 with help of folks in another forum, I replaced the opamp with a pair of nickel 1:2 75ohm transformers. The improvement was huge. I still have the transformers and want put them to use.

DIYINHK is selling a dual mono Ess9038 based DAC. The best feature of the DAC is, you easily hookup a custom IV and LPF stages easily.

Going to order the DAC to play around . Any ideas for an “audiophile” grade LPF and tube IV stage. We can collaborate if interested.


https://www.diyinhk.com/shop/audio-kits/148-dual-mono-es9038q2m-es9018k2m-xmos-dsd-dxd-768khz-usb-audio-dac-with-bit-perfect-volume-control.html

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 Post subject: Re: DAC output stage
PostPosted: September 19th, 2019, 6:42 am 
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Joined: January 15th, 2015, 7:19 am
Posts: 915
Location: Baltimore MD
Confused
If you are going to use the transformers why do you need the tube I/V


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 Post subject: Re: DAC output stage
PostPosted: September 19th, 2019, 8:13 am 
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Joined: July 17th, 2016, 6:24 am
Posts: 637
Pelliott321 wrote:
Confused
If you are going to use the transformers why do you need the tube I/V


If the IV and LPF stages are modularized, transformer or tube IV stages can be hooked up easily.

Andrea Ciuffoli published the schematic of his tube IV stage.


Image

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