Supratek or Don Sachs - which way to go?

Audio123 -
Thanks for the heads-up on the Audio Mirror Tubador. I'm going to have to look into that.
Please post on the new "Supratek Owners Thread".
Thanks,
Markus

Racamuti thank you will wait...

@markusthenaimnut Great, please do post.  I've been enjoying my DS pre, but would still love to hear about the shootout.

Have finally put in enough time with my Don Sachs pre (all upgrades) to evaluate the unit.

The difference between my source direct (I've used both the ps audio pwd & dsd units) and through the Don Sachs is not even close. Music sounds diffuse and unbalanced going direct. Adding the pre to the chain improves every dimension of the sound... bass, highs, clarity, and imaging.  It's just better and I couldn't possibly go back to source direct. 

Also, I agree with the reviews saying that the sound is not at all syrupy, dark, or slow (i.e., tubey). The pre isn't really adding a ton to the signal... I'm just getting a better version of what comes directly out of the source. A very nicely transparent pre-amp.

Also, because I wasn't using the second output, I decided to buy some additional capacitors to try in that location. On a whim bought two Mundorf Supremes as something very different than the Duelund copies Don uses on output 1. I find them substantially better. I totally believe in copper foil caps (have Duelund tinned copper on my tweeters), but find the Mundorf's better in the preamp. The Duelund copies sound kind of flat and dull in comparison. Better focus and front-to-back layering/depth with the Mundorfs. Plus they're a lot cheaper. $40/pair for 2uF.  

Will probably continue to play and try the v-caps that atmasphere recommends. TFTF as the CU-TFs are just too pricey at this point.