Seeking Advice on NOS DAC

I use it for redbook cd and redbook streaming. Find it quite neutral.  

https://www.audiogon.com/listings/da-converters-dac-see-photo-2017-11-13-digital

I have an AN DAC-3 Signature I would highly recommend this 2.1 Signature for the sound for which you seem to be looking.

If you like the non over sampled sound, multibit Schitt or La Scala are excellent choices with the Schitt “Gumby” being quite a bargain and the “Yiggy” of reference quality. I’d advise frequenting Computer Audiophile for opinions on DAC’s as Agon isn’t that up to date on digital trends. The Johnny Darko DAC index is also useful.

Thanks, everybody. I should have mentioned that I auditioned the Schiit “Gumby” and it sounded a bit too aggressive in my system. Excellent dynamics and soundstaging, but my system is very revealing and it wasn't what I was looking for.
  I've owned a Chord with FPGA and found it very smooth, so the Exogal Comet Plus is on my list. The FPGA that reshapes the waveform is a major advance in DAC technology.

Because of the low Input Sensitivity on my tube amp (1V), I'm limited to a DAC with good volume control or one with low output voltage such as the Metrum Acoustics Hex.

And thanks, David. I'll check out the Darko DAC index. I like his reviews.

Thanks, @jond . I will certainly start reading about this DAC.