The text that describes the features of the Madamp A15Mk2 is as follows:
The A15Mk2 is a two-channel 15W guitar tube amp with "american" sound, providing the following features:
Two channels with independent volume and tone controls
2x 6V6 power tubes (15W at 8 or 16 Ohm)
Switchable Power Amp Filter (Smooth)
Channel 1: american Brownface Sound
Switchable Bass Boost (Fat)
Channel 2: american High Gain Sound
Switchable additional Tube Stage for modern Ultra High Gain Sound
Buffered tube-driven F/X Loop
New in version 2:
better tonestack in Clean-channel
improved High-Gain channel
new, bigger output transformer, now in black
speaker jacks for 4, 8 and 16 Ohm
better, matched power tubes (TAD 6V6GTB-STR)
variable power amp filter
enhanced and improved documentation (now 32 pages)
My question is: In which way is the FX-loop "Tube driven" ?
I´m in the middle of trying to build this amp (well a friend is helping me out right now) and there is nothing in the schematic supporting the statemant that there is a tube driving the loop... (All the 12AX7´s are beeing used in the preamp + phase inverter)
My dolumentation is the new one but I can´t help but wonder if there´s some kind of "extra feature schematic" that I never did receive?
Looking forward to a swift reply!
