Fender Rumble 100 V1 Tested OK

Power: 50W (switchable to 12W and 2W)
Two independent footswitchable channels
Separate EQ for each channel
Footswitchable gain/volume boost on lead channel
Reverb with level control
Buffered effects loop
Damping control controls Presence and Resonance at the same time
Vari-Class variable Class A simulation control
Patented Microphone Simulated Direct Interface (MSDITM) output with ground lift and speaker mute switch
Two footswitch inputs”one controls channel & boost; one controls reverb & effects loop.
Two powered outputs with impedance switch for using an external cabinet
TSITM tube monitoring with LED pass/fail indicator lights
USB direct recording output
Tubes: Two 6L6GC and three 12AX7 tubes