preamp tubes for BE100?

[Mike D.]

....in other words, v1 (2nd tube)is for BE.
V2 is for HBE and clean

 

[sg guy]

-how many of these Telefunken's-(or other old tubed)-ya got!! I would interested in them

 

[rgorke]

....in other words, v1 (2nd tube)is for BE.
V2 is for HBE and clean

Right...Making sure guys (presumably) know which tubes affect which circuit.

 

[Adambomb]

So I just got done labeling and putting a bunch of NOS preamp tubes in new boxes. Now I'm wanting to try a few in my BE100. Have a new quad of TAD EL34Bs but I am waiting on putting those in to see if Dave can do the 2016 update to my amp soon.

The Mullard 12ax7: its hard for this tube to not be congested with the fast articulate gain structure and tight mid and bass response on the BE channel.
RCA 50's Longplate: I haven't tried it yet but I imagine it would sound great in V1 for the cleans and HBE.
Many many more nice NOS pres but I really have to say that one tube come up sounding better to me with this amp... Ruby or TAD screened 12ax7 AC5 HG+ for V2 input stage!

 

[Thomas-Hawk]

I tried some Chinese AX7s, stock ARS labeled JJs, and Tung Sols in slots V1 & V2, all combos of those, and found I liked Tung Sols in both slots V1 and V2 the best. Surprisingly enough, my second favorite combo was the stock JJs in V1 and V2. Left the stock ARS labeled Chinese tubes in V3 and V4.

 

[Dirty Dog]

Tube Positions in the BE

V1 triode a is the boost (HBE) and also the clean.
V1 triode b is just the clean

Clean channel = V1a > V1b into V4 (phase splitter)
BE Channel = V2a > V2b > V3a > V3b into V4 (phase splitter)
HBE Channel = V1a > V2a > V2b > V3a > V3b into V4 (phase splitter)

 

[Adambomb]

Tube Positions in the BE

V1 triode a is the boost (HBE) and also the clean.
V1 triode b is just the clean

Clean channel = V1a > V1b into V4 (phase splitter)
BE Channel = V2a > V2b > V3a > V3b into V4 (phase splitter)
HBE Channel = V1a > V2a > V2b > V3a > V3b into V4 (phase splitter)

Hey thanks for that breakdown of the preamp signal Dirty Dog! That should detail all the tube signal related questions anyone would ask.

 

[Dirty Dog]

No worries ;-)