The ADB2 is designed for sending unbalanced signals (up to +40dB) to a mixing console or other professional input device. The unit has no transformer, so stray field pickup is nonexistent. The unit is powered by standard microphone phantom power from 9 - 48VDC and uses discrete low-noise differential drivers to make it very quiet. The unit has two 1/4" TS phone input jacks wired in parallel, a male XLR output jack, a ground lift switch and a three-position attenuator switch.
Active direct box
Attenuator switch for connection to line level or speaker level signals
Uses standard 9 to 48V phantom power
Ground lift switch for "hum" reduction
Rolls ADB2 Specs
2 x 1/4" TS phone (unbalanced)
1 x XLR
-10 to +40dB
-10 to +2dB
1Hz to 50kHz
9 to 48V phantom power
5" x 3 1/2" x 2"
Not specified by manufacturer
Two 1/4" TS unbalanced input jacks wired together in parallel for connection to line or instrument level signals