1.1 Input A Jack
Normal instrument input for active and passive
instruments.
1.2 Input B Jack
Instrument input for high level instruments.
Adjustable via
Input B Trim
knob.
As a general rule, the trim pot should not be
used to attenuate the input signal so much
that the gain control has to be set higher
than 5 (twelve o'clock).
1.3 Overdrive LED
Illuminates when the signal of the preamp
begins to clip (overdrive).
1.4 A/B Switch
Activates Input A or Input B, enabling
switching of two instruments.
1.5 Gain Control
Matches input signal to preamp. To adjust,
turn knob until the
Overdrive LED
beside the
control only flickers at highest and loudest
peaks. The level in the
Effect Loop
is then
adjusted to +4 dB and the headroom to
overdrive is 20 dB.
For
overdrive
function, give more gain. The
Peak LED then lights and flickers more, but that
is ok.
1.6 Trim Input B Control
Pre gain trim for
Input B,
you can adjust the
level between 0 dB and -20 dB.
Attention:
As a rule, keep gain control about halfway
up and adjust trim control accordingly.
2.1 Tune Switch (Mute Function)
Mutes all outputs but the
Tuner Out.
Can be activated by footswitch.
2.2 Tuner Out Jack
Serves as a connection for a tuner. This output
is always active.
3.1 Equalizer with On Switch
Bass, Low, Mid, Mid-KHz and Treble controls
serve to fine tune your sound or solve
acoustical problems on stage. They will be
activated by the
On Switch.
The mid eq is a
semi-parametric one. The frequencies are
centered at 60 Hz, 130 Hz, 200 Hz - 4 KHz and
8 KHz.
4.1 Effect/MP3 On Switch
Activates the
Effect Loop
( Parallel Loop ). This
feature can also be activated by foot switch.
4.2 Effect/MP3 Gain Control
Varies gain of the Effect Return/MP3 In
between ±5 dB.
4.3 Effect/MP3 Control
Mixes the effects loop into the original signal
from 0% ( original signal only) to 100% (effect
only)
5.1 Volume Control
Serves as main volume control for the power
amp and the Phones Out jack on the rear.
Due to the logarithmic curve of the pot, you
have to turn it up about 3 to 4 o´clock for full
output-power!
6.1 Power Switch with LED (blue)
A/C Switch to turn on power to the unit. Power
On is indicated by a blue LED.
6.2 Protect LED (red)
Illuminates when one of the protection circuits
activates. The speakers will be disconnected
with this light on.
6.3 Peak LED (yellow)
Illuminates when the power stage of the
amplifier begins to clip (overdrive). It warns of
overdrive and distortion.
