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Switch Four RCA Source Devices with One RCA Video Display
Radio Design Labs RU-AVX4 RCA Audio/Video Switcher, 4x1
Radio Design Labs RU-AVX4 RCA Audio/Video Switcher, 4x1
Radio Design Labs RU-AVX4 RCA Audio/Video Switcher, 4x1
Item# 77976
Price: Normally $485.17 
Hot Deal $309.22
Free shipping on orders over $175 - See Details


  • Video and stereo audio switching
  • Four video and four stereo audio inputs
  • Consumer format input and output jacks
  • 10 MHz video bandwidth - NTSC or PAL
  • Long-life keyboard style pushbuttons
  • Rear-panel remote control connections
  • Professional quality performance

Essential Info

Too many video devices and not enough TV inputs? The RU-AVX4 is the ideal choice in installations where a single set of audio/video signals needs to be selected from up to 4 consumer format (phono jack) video and audio sources. Video signal quality, audio performance and pushbutton durability are equal to that found in professional switchers. Audio and video source selection uses all solid-state switching. High quality audio and video line driver amplifiers feed the module’s output.

The RU-AVX4 has four separate inputs and a single output on the rear panel. The inputs and output provide one video phono jack and two associated (left and right) audio phono jacks. When power is first applied to the module, input 1 (default) is automatically selected. Four keyboard style long-life pushbuttons on the front panel are used to select one of the inputs at a time. When a button is pushed, the corresponding video and audio input is fed to the output of the RU-AVX4 and any previously selected source is shut off. Only one source may be selected at a time.

The RU-AVX4 rear-panel terminal block provides four connections to remotely control the module. A momentary external closure to ground on an input terminal will select the associated input. Continuous remote closures will select inputs while disabling source selection by the front-panel buttons. An LED indicator above each front-panel button shows which input is selected.

This item requires a 24V power supply such as the PS-24AS or PS-24K for operation.



  • Inputs (4): 75 Ohm, phono jack with gold contacts
  • Input level: 1 V p-p
  • Output: 75 Ohm, phono jack with gold contacts
  • Frequency Response: 10 Hz to 10 MHz (+/- 0.35 dB)
  • Residual Noise: < -70 dB referred to 1 V p-p video
  • Off attenuation: > 78 dB
  • Differential gain: 0.1%
  • Differential phase: < 0.3 degree
  • Inputs (4): 10k Ohms, unbalanced stereo (left and right) phono jacks
  • Gain: Unity nominal (+0, -1 dB)
  • Input level: -10 dBV nominal
  • Output: 75 Ohms, unbalanced stereo (left and right) phono jacks
  • Frequency Response: 10 Hz to 60 kHz (+/- 0.05 dB)
  • Total Harmonic Distortion: < 0.010% (20 Hz to 20 kHz)
  • Headroom: > 20 dB (at rated input/output level of -10 dBV)
  • Noise: -95 dB referred to -10 dBV (20 Hz to 20 kHz)
  • OFF attenuation: > 74 dB (20 Hz to 20 kHz)
  • Crosstalk: Below noise floor (inputs terminated)
  • Power Requirement: 24 to 33 Vdc @ 100 mA, Ground-referenced


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