Home › Categories › Amplifiers › RDL HD-RA35UA

RDL logo
Shop all RDL

RDL HD-RA35UA

The RDL HD-RA35UA is the constant-voltage version of the four-input HD-RA35U remote mixer amplifier, built to feed 70 volt and 100 volt distributed speaker lines while keeping the amplifier out of sight. Inputs 1 and 2 accept balanced microphone or line sources with switchable 24 Vdc phantom power, and inputs 3 and 4 take unbalanced line sources. A high-efficiency Class D stage delivers 35 watts to a selectable 25 V, 70 V or 100 V bus, with a separate 4 watt Zone 2 output on a detachable terminal block.

The Zone 1 output level for inputs 2, 3 and 4 is VCA controlled through an RJ45 jack that connects directly to an RDL triple remote level control (sold separately), so the wall control carries no audio. The mixer and amplifier sections sleep when audio is absent, holding standby draw below 1 watt, with a rear-panel DIP-set power-down delay from 10 minutes to 2 hours. The unit ships with its 100 to 240 VAC power supply.

Inputs4 (Inputs 1 and 2 balanced mic/line; Inputs 3 and 4 unbalanced line)
Phantom Power24 Vdc (IEC 61938), switch-selectable each mic input
Power OutputZone 1: 35 W RMS; Zone 2: 4 W
OutputConstant voltage 25 V, 70 V or 100 V (Zone 1)
THD+N< 0.5% (1 kHz at compressor threshold, main output)
Remote ControlRJ45 for RDL triple remote level control; VCA on inputs 2, 3 and 4
StandbyAutomatic sleep < 1 W; 10 min to 2 hr power-down delay
AmplifierHigh-efficiency Class D
Power Supply100-240 VAC supply (included)

Resources and support

Compatibility helpCall (201) 791-1400 to confirm signal format, connections, and workflow fit. RDL product familyContinue browsing the full RDL range we carry.