Volume Controls

Mixer Amplifiers

Ceiling Speakers

25/70V Ceiling

FT4 Rated
HDMI Cables

The Sound Acoustics C-540 commercial amplifier
provides constant-voltage outputs for background
music and voice paging. It’s ultra low noise, high
headroom circuitry provides crystal clear audio for
the most demanding environments. Special features
are included to allow system expansion, easy
installation and intuitive operation. Sound Acoustics
amplifiers also provide state of the art protection
circuitry to ensure long term reliability. Sound
Acoustics is the professional installers first choice
for high quality sound installations.

Documentation & Images
Technical Specifications:
Download (PDF)
Product Manual:
Download (PDF)
Download (PDF)
Images: [Front] [Rear]

Optional Accessories:
Remote Line / Microphone Mixer
SA-RK2.5 -
Rack Kit


5 Multi use inputs.
40W RMS output @ 25/70/100V & 4Ohm.
Color Coded inputs & outputs.
Front Panel iPod, Mp3 or Computer input.
PRO-RVC input allows up to 6 additional inputs
(3 mic & 3 Line) on Cat5 with volume control.
High headroom low noise mic/line pre-amplifiers.
Individually switchable 24V phantom power (mic inputs).
Telephone input with auto override and volume control.
Removable front panel knobs (includes security covers).
Music On Hold dual zone outputs.
Chime tone contacts with volume control.
Pre-Amp output.
Removable terminal block connectors.
Mutiple override modes.
Switchable HPF (high pass filters) Mic input and main outputs.
Remote master volume control (via PRO-RVC).
Onboard compressor (prevents distortion overload).
cMETus approval E112876.


Output Power (RMS): 40 watts
Frequency Response: 50Hz- 20kHz
Total Harmonic Distortion <0.5% at rated power
Signal To Noise Ratio: Mic 67dB
Signal to Noise Ratio: Line 75dB
Signal to Noise Ratio: Tel 76dB
Maximum Residual Noise Level: 5mV
Inputs: Microphone x 3 (expandable to 6)
Inputs: Line Level x 5 (expandable to 8)
Input: Telephone x 1
Input: PRO-RVC x 1
Input: Chime with Level Adjust x 1
Input: Remote mute contacts x 1
Speaker Outputs: 25V/70V/100V 4ohm
Line level Outputs x 2
MOH Output: 8 ohm 1W & 600 ohm 1V
Remote Master Volume Via PRO-RVC
Power Requirements: AC AC120V/60Hz
Power Consumption: AC 120W
Dimensions: 8.5”W x 4”H x 11.25”D
Shipping Weight: 5.9kgs



© 2008 all rights reserved. Sound Acoustics™ is a registered trademark.