2
Specifications:
All measurements taken with a line voltage of 120 VAC.
All voltages are RMS.
All noise measurements are unweighted.
Tube complement:
Five total; two 12AX7A/7025 high-mu twin triodes
and three 12AU7 medium-mu twin triodes
Input Impedance:
1 M ohm (passive mode)
56 K ohm (active mode)
Output impedance:
Normal output = 1K ohm.
Balanced output = 600 ohm
Crossover outputs = 75 ohm.
Signal to noise ratio:
-80 db
Power requirement:
100-120-220-240 VAC/50-60 Hz.
Internally selectable. Refer to a qualified service
technician to change voltage selection.
Power consumption:
(at 120 VAC): 0.75 A, 87.75 W
Rack size:
2 spaces
Weight:
17 lbs.
INPUTS:
Two Selectable Inputs:
There are two inputs on the front panel of the DB 680. There is an input selector switch
to the right of the inputs. You can switch manually between inputs one and two. The
center position (labeled F/S) is for footswitching, using the provided footswitch. This
feature allows you to keep two basses plugged in, and be able to switch easily and silently
between the two.
Active/Passive Switch:
This switch applies to both inputs. Nine times out of ten you’ll use the passive input. If
your bass’s output distorts the input section, switch to the active position. In the active
position, a 12db pad in the signal path will remedy the situation.