This ALT is fully functional and in great condition.

QUAD VOLTAGE CONTROLLED AMPLIFIER & CASCADED MIXER

• VCAs 1, 2, 3. Each one is equipped with a GAIN control, and a CV IN Attenuverter.
• VCA 4. GAIN CV IN and the signal normalled to +5V (fully open VCA).

Additionally, the outputs of these channels are cascaded from left to right, allowing ALT to behave as a four-channel mixer.