The RU-ADA4D from RDL is a four-channel stereo audio distribution amplifier with input and output gain adjustments and input-level metering. The module may be operated in mono to provide up to eight distributed mono signals. The inputs and outputs are connected on rear-panel detachable terminal blocks.

Each of the two line-level inputs accepts either balanced or unbalanced signals. Each input is equipped with a front-panel trim level. Levels between -14 dBV unbalanced and +9 dBu balanced may be set to the proper operating level as indicated by a dual-LED VU meter. This assures ample headroom at all normal operating levels. The maximum input level is + 25 dBu.

A rear-panel switch selects between stereo and mono operation. In the mono position, input A is used to drive all 8 output channels. When the module is used in a monaural system, only input A must be wired.

Audio outputs are isolated from each other and may be wired balanced or unbalanced. Each of the outputs is provided with a front-panel screwdriver adjusted Output Level control. Relative to a balanced +4 dBu output level, this gain potentiometer allows an adjustment range from -9 to +6 dB. Relative to an unbalanced -10 dBV output, each output potentiometer allows an adjustment from -3 to +12 dB.

The RU-ADA4D offers generous headroom, low distortion, crosstalk isolation, wide frequency response and low noise with high common-mode signal rejection. It provides quality performance for professional audio applications.

UPC: 813721013408

RDL RU-ADA4D Specs

Audio Input
Inputs	Stereo Input (Input A /Input B) on Detachable Terminal Block
Input Impedance	20 Kilohms Balanced 10 Kilohms Unbalanced
Input Gain	-5 dB to +15 dB (Rel. +4 dBu Balanced) -3 dB to +17 dB (Rel. -10 dBV Unbalanced)
Input Metering	Dual-LED VU Meter for Input A and Input B
Audio Output
Mono Output	Rear-Panel Switchable (Input A Feeds All 8 Outputs)
Outputs	4 x Stereo (Input A /Input B) Outputs on Detachable Terminal Blocks
Output Impedance	150 Ohms Balanced 75 Ohms Unbalanced
Nominal Output Level	+4 dBu Balanced -10 dBV Unbalanced
Maximum Output Level	+24 dBu Maximum
Output Level Adjustment Range	-9 dB to +6 dB (Rel. +4 dBu, Balanced) -3 dB to + 12 dBu (Rel. -10 dBV, Unbalanced)
Performance
Frequency Response	10 Hz to 165 kHz ±0.25 dB 10 Hz to 35 kHz ±0.01 dB
THD + N	< 0.0025% (20 Hz to 20 kHz)
Headroom	> 20 dB (Above +4 dBu Input or Output)
Noise	< -92 dB (Below +4 dBu Output, 20 Hz to 20 kHz)
Crosstalk	< -90 dB (20 Hz to 5 kHz) < -80 dB (5 kHz to 20 kHz)
CMRR	> 90 dB (100 Hz)
General
Power Requirement	24 VDC @ 82 mA (Idle, Nominal), 120 mA Max Ground Referenced
Operating Temperature Range	32 to 122°F / 0 to 50°C
Dimensions	5.74 x 1.64 x 3.54" / 14.58 x 4.17 x 9 cm
Weight	Not Specified by Manufacturer

Packaging Info

Package Weight	1.4 lb
Box Dimensions (LxWxH)	6.75 x 6.15 x 2.75"

RDL RU-ADA4D Reviews

See any errors on this page?

question

Would this be good to split audio for a press conference?

Asked by: Weston B.

The RDL RU-ADA4D is designed for permanent installation, and meant to be hardwired for audio distribution in media rooms, press conferences where audio jacks are preinstalled into the walls. For field use you may want to take a look at a Press Box. <a href= http://bhpho.to/16GrjXQ target= _blank >http://bhpho.to/16GrjXQ</a>

Answered by: Jeff P.

Date published: 2018-08-28

Does it comes with power supply?

Asked by: Kostadin

No, it does not. You will need the RDL PS-24AS.

Answered by: John

Date published: 2019-08-20

question

Is it rack mountable?

Asked by: Anonymous

If you use a rack mount shelf to set it on.

Answered by: Ronnie T.

Date published: 2018-08-28