A-901A
The mixer/amplifier shall have two input ports and one program input. It shall be capable of
operation from a 120 V, 50/60 Hz line. The amplifier shall meet the following performance criteria.
Power output shall be 10 W at less than 2% THD from 50 to 20k Hz. Frequency response shall
be ± 1 dB from 20 to 20k Hz. Load impedance shall be 4 ohm, 8 ohm, 62.5 (25 V line) or 490
ohms (70.7 V line). Load Voltage shall be 6.3, 8.9, 25 or 70.7 V. Output noise shall be 90 dB
below rated output when all gain controls are off. The TOA plug-in accessory modules designed
for use with the mixer/amplifier shall utilize the latest in surface mount component technology and
shall include microphone, line and special function models. Dimensions (W x H x D) shall be
3.98” x 9.84” x 9.65” (101 x 250 x 245 mm) and weight shall be 8.6 Ibs. (3.9 kg).

The mixer/amplifier shall be TOA model A-901A.
The rack-mount bracket shall be TOA model MB-920.