User Manual

FRONT PANEL
Controls
[A] VCA A LEVEL slider - Sets the base level (or bias) of the
A channel’s VCA. When fully up, this is approximately
equivalent to applying a +5 V voltage at the CV input,
which results in unity (1:1) gain. The slider level is summed
with the channel’s CV input.
[B] VCA B LEVEL slider - Sets the base level of the B
channel’s VCA.
[C] CV A Attenuator - Controls the amount by which the
CV A [1] input governs VCA A’s amplification amount. The
corresponding CV A LED [I] shows the post-attenuator
level of the incoming CV signal. It lights green for positive
voltages and red for negative, with the brightness
indicating relative overall amplitude.
[D] CV B Attenuator - Controls the amount by which the
CV B [2] will governs VCA B’s amplification amount.
Because the CV inputs cascade, if there is nothing
plugged into CV B [2] , then it will use the input present at
the CV A [1] jack to modulate VCA B. As with CVA A, the
led above the attenuator indicates both amplitude and
polarity of the post-attenuated CV signal.
[E] BOOST A switch - allows for VCA A amplification in
excess of unity gain. Specifically:
● Middle Position: Boost is disabled and the maximum
linear gain of the channel’s VCA is unity (1:1) — which
is achieved when the VCA LEVEL [A] slider is fully up,
or +5V is applied to the CV A IN [1] jack.
● Left Position: The signal is boosted by approximately
+6 dB (double the voltage). This setting is useful for
boosting the gain of lower input signals, or for providing
a bit of overdrive to optimal signals.
● Right position. The signal is boosted by approximately
+20 dB (10x the voltage). This setting is useful for converting line level inputs to modular
levels, or for clipping (distorting) eurorack signal levels.
Amps Manual 7