4x1 Stereo Balanced Audio Switcher/Terminal Block

Radio Design Labs RU-ASX4D Stereo Audio Selector 4x1
Features: Local or Remote Controlled Switching Multiple Switching Control Points 4 Stereo Inputs to 1 Stereo Output Line-Level Audio Switching Balanced or Unbalanced Inputs and Output Gain Trim on Each Source Controllable Using Various RDL Remote Controls Open-Collector Output for Selected
Input Specifications: Audio
Inputs (4): Stereo, Line level on Detachable Terminal Block 10 kΩ unbalanced Input Level (for +4 dBu output): -15 dBV to +8 dBu, adjustable on rear-panel trimmers Maximum
Input Level: +25 dBu 60 dB (50 Hz to 120 Hz) 20 dB (unity gain)
Frequency Response: 10 Hz to 20 kHz (± 0.2 dB) Distortion (THD +
N): < 0.01 % (20 Hz to 20 kHz)
Noise (below +4 dBu): < -85 dB (with any input selected); < -95 dB (with no input selected) 70 dB (20 kHz) 70 dB (20 kHz)
Front-Panel Switches: Momentary pushbuttons (4, 1 per input), LOCAL/REMOTE latching pushbutton Front-Panel
Indicators (11): Power, Selected channel (4), LOCAL/REMOTE selector (2), L and R Dual-LED VU meters (4)
Audio Output: Stereo, Line level on Detachable Terminal Block
Output Impedance: 150 Ω balanced, 75 Ω unbalanced
Output Level: +4 dBu balanced, unbalanced output 6 dB below balanced output level
Control inputs (5): 1 mA, pulled to ground (4, source selection); 1 mA, pulled to +15 Vdc (SEL)
Control outputs (5): 25 mA, open-collector to ground Rear-Panel
Indicators (4): L and R Dual-LED VU meters RDL
Remote Control Compatibility: D-RC4M, D-RCS4
Power Connection: Detachable Terminal Block
Power Requirement: 24 Vdc @ 150 mA, Ground-referenced
Ambient Operating Environment: 0 C to 55 C