Inter-m DPA-300T Operation Manual page 8

DIGITAL POWER AMPLIFIER
8. OUTPUT VOLTAGE SELECTOR
This two-position switch is used to select a output voltage (100V or 70V).
9. PGM INPUT CONNECTOR (CH1, CH2, CH3, CH4)
Balanced 3-pin terminal block connector accept the source input.
※ CH4 : Only DPA-300Q/300QO.
6 DPA-300T/300Q, DPA-300TO/300QO