Don Sach's pre amp

I tried them in a preamp and they didn't sound great.....I guess I will see as I have a paired ordered with my Don Sachs preamp.

Those tubes will sound good after 50 hours but will need 200+ hours to fully burn-in. Looking forward on receiving my D2 and Kootenay 120 KT 88 Amp.

Wig

I ordered a pair of the Shuguang Black Treasure CV181z tubes to try out with the DS-2. The DS-2 needs over 100 hours of burn-in time for the capacitors chosen for the build anyway....so I will use them for the burn-in and see how they sound compared to my current 6SN7 favorite, the Raytheon VT-231 with 8 copper rods and flat black plates.

@porscheracer, , I just purchased a new PS audio Directstream DAC I do own a Schiit Gungnir ( which I use with my LCD-X and Audeze Deckard Amplifier, But PS Audio Directstream just blew  me away with the DS-2 , when I purchased it  I thought i'd use for 30 days and send it back  than may be try to get a Lampizator DAC, but the sound quality to my ears is so pleasing with this DAC that I changed my mind and decided to keep it . the DAC also can be used as pre-amp directly into the power power amp. The sound quality is pretty close, with DS stream having slightly bigger soundstage 

I'm considering the Sach's Custom preamp. I love the use of 6SN7's in the gain stage. The one thing I'm wondering is the use of a cathode-follower is like a double-edged sword; low noise and distortion, but this design usually has a modern tube sound; extended highs and a lack of warmth.
I like transparency and open sonics, but I've owned preamps that sounded similar to solid state. I don't like the dark "syrup" tube sound, but want a preamp that presents tube bloom.

Any comments on this by Sachs owners? I'm using an EL34 push-pull amp.