Video Chat with a Pro Audio Expert - Live

RDL RU-VCA2A 2- Channel Digitally Controlled Attenuator

RDL RU-VCA2A 2- Channel Digitally Controlled Attenuator
Special Order
Expected availability: 3-7 business days
$63/mo. suggested payments for 6 Mos.
with the credit card.§ 
or Save the Tax with the credit card. 

Important Notice

  • This item is noncancelable and nonreturnable.
Protect Your Gear
Add a protection plan from $58.99
Ask Our Experts

RDL RU-VCA2A Overview

The RDL RU-VCA2A 2-Channel Digitally Controlled Attenuator is a full-featured, studio-quality, dual-channel audio attenuator module for local and/or remote control of balanced or unbalanced line-level sources. This module can be remote controlled from a single or multiple locations. Rear-panel terminals provide flexible control options using a variety of remote controls or OEM equipment.

Audio levels are controlled in 0.5 dB steps using noiseless, zero-crossing digital attenuators for optimum reliability, precise tracking, and long-term, click-free service. Exceptional wide-band, low-noise performance makes this attenuator suited to level adjustment in demanding applications. Rear-panel inputs and outputs may each be wired balanced or unbalanced. The RU-VCA2A Attenuator powers up in one of 2 operating modes (MOM and 0 to 10VDC modes) set by a rear-panel switch.

Local or remote audio level control
Mono or stereo attenuation
Noiseless zero-crossing adjustment steps
96 dB attenuation range in 0.5 dB steps
Data bus provides adjustment of multiple modules
Multiple remote control locations possible
Precise level tracking on each channel
Balanced or unbalanced line inputs and outputs
Adjustable ramp up and down rates
Controllable using various RDL remote controls
Selectable Level Control Options: Push-buttons (Internal or External), momentary pulses (external/rotary encoder)
0 to 10VDC or 10kΩ potentiometer
Selectable power-up return to PRESET or LAST Level
Selectable MASTER/SLAVE mode for control expansion
UPC: 813721013453


10 kΩ balanced bridging, or unbalanced, line level
Frequency Response
10 Hz to 50 kHz (+/- 0.5 dB)
< 0.005% (20 Hz to 20 kHz)
Adjustable from unity to <-96 dB
Step Size: 0.5 dB
> 18 dB (above +4 dBu)
Residual Noise
< -90 dB (referred to +4 dBu at unity gain)
<-65 dB (50 to 150 Hz)
<-95 dB (1 kHz, typ.)
< -85 dB (20 Hz to 5 kHz); < -75 dB (5 kHz to 20 kHz)
Ramp Times
0.5 second delay; then: 3 seconds to 10 seconds
Front-panel LEDs indicating relative audio level (8), Maximum condition (green), Minimum condition (red)
Audio Output
150 Ω balanced (may be connected unbalanced)
Ramp Output
0 to 10 VDC, (Ground-referenced) Note: Not intended to drive additional VCA 0-10V inputs
EQ Ramp Output
0 to 10 VDC, (Ground-referenced)
Power Requirement
24 VDC @ 120 mA, ground-referenced
Operating Environment
Ambient Operating Environment: 32 to 122⁰F (0 to 50° C)
Case Dimensions: 5.7 x 1.6 x 3.5" (14.6 x 4.1 x 9.0 cm) D
3.9" (9.9 cm) D with connectors
Packaging Info
Package Weight
1.35 lb
Box Dimensions (LxWxH)
6.772 x 6.221 x 2.756"

RDL RU-VCA2A Reviews

See any errors on this page? Let us know