[HAL]

The tubes are 12B4's.

[TrungT]

12B4 tube glow nicely, but it's not too hot.

[Cheeseboy]

This the first I've ever heard anything about this preamp.  Has anyone posted some listening impressions.  How does it compare to the Dodd Battery Pre I?  Battery Pre II?

[TrungT]

12B4 is a brand new product, I had Gary build it for me.
12B4 is single triode tube, and it sound almost the same with 2A3, I think 12B4 little more natural, neutral than 2A3,
2A3 little lay back, warmer tube.
To me: 6H30 tube pre more aggressive than 12B4, everything else are the same character.
12B4 tube are cheap and plentiful, that's another reason to build balanced pre. 

[Cheeseboy]

Trung what other components are in your system.  Speakers and amp? 

[TrungT]

Mac Mini
Zodiac DAC
NCore or SDS-470 or Dodd KT88 Mono block.
Audience Clairaudient 2+2, Rythmik sub.
+ UberBuss + BattBuss
 

[Jonathon Janusz]

Trung, I like the "industrial" look on the pre - neat to see Gary change up the look every now and again.

Interesting reading your thoughts on the character of this vs. (I'm assuming?) the standard Dodd preamps.  Maybe a silly question, but is yours battery powered or does it run off an AC power supply?

[TrungT]

12B4 balanced pre is battery powered.

[mojave]

I've had Trung's preamp for a couple days, but haven't had much time to listen yet. I have it connected to a 12V battery from a UPS that quit working at work. I'll try to get some pictures and give my listening impressions.