Hermida Audio Technology Pedal Quick-Start Guide
Page 3 of 5
Pedals with Tubes: Zendrive 2 and Nu-Valve
Zendrive 2
The Zendrive 2
(Diagram B)
is a variation of the original
Zendrive with the addition of a dual triode pre-amp tube. The
tube is installed in a socket and can be replaced with other pre-
amp tubes. Differ ent tubes can change the voicing and gain of
the pedal. The Zendrive 2 comes with a 12AX7 tube, but can
also use a 12AT7, 7025, 5751 or similar pre-amp tubes. Please
contact support@hermidaaudio if you are unsure of the
compatibility of a tube. The Zendrive 2 includes a 9V DC
200mA adapter. It does not operate with a battery.
Nu-Valve
The Nu-Valve
(Diagram C)
includes two small Nuvistor tubes. The pedal
operates with a 9V DC 200mA adapter. The tubes are installed below the
footswitch in sockets and can be easily replaced without the need to
solder. The tubes supplied with the Nu-Valve are NOS (New Old Stock)
6CW4 Nuvistor tubes. This is the only type that should be installed in the
pedal.
Diagram B
: Zendrive 2 pedal
Diagram C
: Nu-Valve pedal
