Samson Servo 120a Power Amplifier

Samson Servo 120a Power Amplifier


Categories ,


Samson Servo 120a Power Amplifier


The Samson Servo 120a Power Amplifier is a stereo power amplifier that can be used for all types of recording applications, live performances or permanent installs. The amplifier provides “reference-class” audio performance and reliability in a compact, single rack-space package.

The Servo 120a utilizes high-current output power transistors and features an efficient bipolar circuit design that continuously keeps DC output during idling at or near 0 volts. This keeps idle speakers at their zero point. Thermal and overcurrent protection circuitry is provided, and the amplifier is convection cooled for silent operation, eliminating fan noise and the need for filter maintenance.

The Servo 120a provides balanced 1/4″ TRS and RCA coaxial inputs and push-spring terminal outputs. Also included is a front-panel protection light, a headphone output, a speaker on/off switch, and 3-color LED meters.

A stereo power amplifier for recording, live music, and installation applications
Operates in both stereo or bridged mono
50 Watts per channel into 8 Ohms
Stable bipolar circuit design continuously keeps DC output during idling at or near 0 volts, preventing unnecessary power applications to minimize heat overload
Toroidal transformer power supply for high current and low profile
High-current output power transistors
Protection relay circuitry (linked to the DC offset circuitry) that prevents “thumps” when powering on or off
Smart Servo circuitry protection against overheating and overcurrent
Functions in stereo or bridged mono modes
Front-panel headphone jack with speaker disable switch
Five-segment LED meters for each channel continuously display power output levels and allow the user to correct for overloading (clipping) conditions
Convection cooled (no fan)
Compact, 1 RU space unit
UPC: 809164005131

Samson Servo 120 Specs

Power Amplifier
Number of Channels 2
Power Rating 4 Ohms:
60 W per Channel
8 Ohms:
50 W per Channel
120 W Bridged
Frequency Response 10 Hz to 20 kHz
Damping Factor >150
Input Sensitivity 4 dBu
Input Impedance >10 Kilohms (Balanced)
>10 Kilohms (Unbalanced)
SNR 105 dB
THD <0.01% (1 kHz, at Rated Power)
I/O 2 x 1/4″ TRS Input
2 x RCA Input
4 x Push Terminal Output
1 x 1/4″ Headphone Output
Power Consumption 120 VAC:
240 W
Display & Indicators 1 x Multi-Segment LED Meter
1 x LED (Protect)
1 x LED (Power)
Cooling Convection
Dimensions 19.0 x 11.5 x 1.8″ / 483.0 x 292.0 x 44.0 mm
Weight 15.6 lb / 7.1 kg
Packaging Info
Package Weight 16.2 lb
Box Dimensions (LxWxH) 21.5 x 14 x 4″


There are no reviews yet.

Be the first to review “Samson Servo 120a Power Amplifier”

Your email address will not be published. Required fields are marked *