I currently live near Walnut Creek, but regularly travel to Sacto/Rancho/Roseville. Planning to move back to the valley in the next 6 months. Would love to get together. I am a DIY, jazz and DHT guy. Like you, I am very found of the sound of 6SN7/7N7 tubes. Willing to bring amplification and DAC's to listen and compare. I built, and sold, an Aikido octal preamp, would be very interested in hearing your 6SN7 preamps.
My current main rig is:
- VPI TNT IV turntable; VPI JMW12.7i arm; FR1 MkII Silver Coil cartridge with Soundsmith retip; Odessia SUT w/Hashimoto transformers
- Bottlehead Eros phono pre
- Bottlehead Eros Tape Head & Otari MX5050 IIIB2 R2R
- Audio Note Kit Dac2.1B NOS tube DAC
- Bottlehead Smash^Up Russian 4P1L tube preamp
- Bottlehead Paramount 300B monoblocks with 7N7 driver tubes
- EV Sentry IV-A 3 way horn speakers
Being a DIY'er, most of the amplification is pretty heavily upgraded, similar to what Don Sachs does. I have built or rebuilt everything in the system except the TT, which started as a TNT Jr. many years ago. The main rig is built around DHT low power amps and 102dB/1W/1M horns. I like open baffle sound, as well.
I have several other turntables, cartridges, amps, preamps and DAC's. (I have a Sota Sapphire, but currently boxed.) Yeah, I know!

I will send you a PM with my mobile phone number.
Cheers,
Geary