The Amp Garage

I would also like to know how the Bright Switch works…

I built a DS with JTM45 Iron,so my B+ is about 440v . No problem with those 500v caps.
Wouldn‘t try that with 470v on the plates though. 2 Caps in series is the solution, you may try 70mf/350v.
16/16mf is fine for the TS

Looking for gutshots, anyone?

A 12AX7 sounds brighter than a 12AT7

Actually the Top Boost Vox installed later, comes pretty close to the tone of an EF86. (set the Treble and Bass Pots to zero or very low)

from the manual..

Rare find from a 1977 Mesa Boogie

I do. I split the signal coming from the guitar. A is going to fet booster into Dumble Style amp ,B goes to tuner and a Delay pedal ( 100%wet) into a 5 w Combo . Love it

added Presence knob on the far right?

I bought a VHT D-Boost recently, here is my review. Accurate take on the Fet Circuit of a Dumble. Uses a 2N4416A JFet and a LT1054 Voltage Converter. With a Power Supply of -12v I got 22v on top of the Drain Resistor (10k),16,5v at the Drain and 2,7 v at the Source. Lowering the Source Resistor from...

If my memory serves me well, the Fuchs ODS had 470p snubbers

I‘ve been doing this for some years now. Add a resistor between the speaker out and the reverb in( 50/100ohm in series) .This isolates the reverb from the amps output impedance. I‘m running 50 w amps at stage volume into the reverb pan feeding a small satellite amp( 5-10w) . Dry/Wet system

Build one yourself, it‘s only a pot and a resistor