Clear-Com PS-704 4 CH. Rack Mount Power Supply

MSRP: $1,380.00
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PS-704 4 CH. Rack Mount Power Supply

The PS-704 is a four-channel, single-rack-space intercom power supply that features Clear-Com’s “fail-safe” design for maximum reliability. The power supply delivers 2 amps at 30 volts, supplying power for one to four channels of intercom.

  • Provides up to 2 amps at 30 Volts
  • Supports up to 40 beltpacks, 10 speaker stations, or 12 headset stations
  • Exclusive Intelligent Fault/Overload Sensing (IFOS) for system reset
  • Switchable line terminations for each channel
  • Built-in test tone generator for set up and diagnostics
  • UL listed and CE certified
  • Line and load regulated
  • Short-circuit protected


Program Line Input

Maximum Level before Clipping: >= 20dBu

Input Impedance: >= 5K

Frequency Response

Program Input – Party Line: 200 – 20kHz ± 3dB

Max Distortion

Program Input – Party Line: <= 0.2%


Program Mic Input – Party Line: < -70dBu

Max Gain

Program Input – Party Line: >= -16dB

Min Gain

Program Input – Party Line: <= -20dB

Mains Power

Input Voltage Range: 100 – 240V AC

Input Frequency Range: 50 – 60Hz

Input Power: <= 60V AC

Output Voltage: 30V DC ± 0.5V

Output Current per Channel (Continuous): 1.2A

Output Current per Channel (Peak): 2A (Do not exceed the 1.2A rating for more than 2 seconds per 1 minute period)

Short Circuit Recovery Time (1st short):<= 0.5 sec Short Circuit Recovery Time: >= 20 shorts in 20sec) <= 20 sec


32° – 122°F (0 – 50°C)


1.75 x 19 x 7.5in (HxWxD)

(44 x 483 x 190mm)


6.16lbs (2.80kg)