The AN-001T from TOA Electronics is an ambient noise controller module for use with 9000 series amplifiers. It detects changes in ambient noise and automatically adjusts the output gain of the amplifier to compensate. Each input of the module can be assigned to control a specific output, and two inputs are equipped with +24VDC phantom power for connecting condenser mics. The module also offers 14 preset gain ratios.

Power Source +24VDC, -24VDC, +6VDC
Consumption 20mA @ ±24VDC
60mA @ +6VDC
Input 2 x 3-Pin Removable Terminal Blocks
Input Sensitivity -60, -54, -48, -42, -36, -30, -24, -18, -10dB (Selectable)
Phantom Power +24VDC
A/D Converter 24-bit
Sampling Frequency 48kHz
Ambient Noise Control Function Max Output Signal Level Control: -15 to 0dB
Min Output Signal Level Control: -18 to -3dB
Sample Time Setting: 10, 15, 20, 30 s / 1, 2, 3, 5 min
Gain Ratio Setting: 6:3, 5:3, 4:3, 3:3, 3:4, 3:5, 3:6, 6:-3, 5:-3, 4:-3, 3:-3, 3:-4, 3:-5, 3:-6
Dimensions 1.4 x 3.1 x 3.6″ (35 x 78 x 92mm)
Weight 2.9 oz (82g)
Packaging Info
Package Weight 0.2 lb
Box Dimensions (LxWxH) 4.13 x 3.46 x 1.57″