THD Electronics BiValve-30 - Manual (Page 4)

THD BIVALVE-30 INSTRUCTION MANUAL 4
BiValve-30 Controls
Front Panel
The various control options on the BiValve-30 front panel are identical to that of the
UniValve:
1. MORE Input: This jack fits a standard 1/4" mono shielded instrument cable. If you
use a stereo cable, the sleeve signal will be ignored. Do not use speaker cable into this
input. The MORE input is the high gain input, meaning that both preamp gain stages will
be engaged in order to pass the hottest possible signal to the power section.
2. LESS Input: This jack fits a standard 1/4" mono shielded instrument cable. If you use
a stereo cable, the sleeve signal will be ignored. Do not use speaker cable into this input.
The LESS input is the low gain input, meaning that the first preamp gain stage will be
bypassed.
NOTE: You cannot plug into both inputs simultaneously or otherwise A/B between
inputs. Plugging into the Less input will disable the More input.
3. Volume: This knob controls the loudness of the amplifier. The higher the volume
knob setting, the more the tubes are engaged.
4. Treble: This knob can be used to boost or cut the high frequency response of the
UniValve.
5. Bass: This knob can be used to boost or cut the bass frequency response of the
UniValve.
6. Attitude: The attitude knob determines how the driver tube responds to the signal, and
how it drives the power tube. If the Attitude knob is turned up, the BiValve-30 will
sound edgier and more aggressive. With the Attitude knob turned down, the BiValve-30
sounds sweeter and more controlled.