Samson S120A Power Amplifier (120 Watts)

Perk up your live or studio sound system with this Samson power amplifier. The 1-rack unit features a bipolar design and puts out up to 60 watts per side.

Ideal for powering near field monitors or installation sound, the Servo 120a provides you with "reference-class" audio performance and reliability in a compact package. Perfect for studio, live sound and home theater applications, the 120a's bipolar design and toroidal transformer power supply ensure reliability and quiet performance.


- 1-space 19-inch rackmount servo-controlled power amplifier
- 60 watts per side at 4 ohms stereo
- 120 watts at 8 ohms (bridged mono)
- 1/4 in. balanced phone jack and RCA inputs
- Bi-polar design and toroidal transformer power supply
- Individual left and right level controls
- 5-segment, 3-color LED meters
- Convection-cooled design
- Headphone jack with speaker output mute

Output at 8 ohms stereo: 55 watts per channel
Output at 4 ohms stereo: 60 watts per channel
Output at 9 ohms, bridged mono: 120 watts
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 16.5 lbs
Shipping Dimensions: 22 x 14 x 4 in
Manufacturer Part Number (MPN): SA120A

For support or warranty questions, please contact the manufacturer:
Phone: 516-870-7200

Reviewers gave this product an overall rating of 5 out of 5 stars. (17 ratings)
Submitted September 12, 2006 by a customer from

"best in this product market!!"

Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
used in a tuned room with early '70's ceiling-hung loudspeakers. Lows are full, highs are clean and crisp. Maybe just a bit of harmonics approaching above 15khz, but without better equipment to test, I can't say for sure. With confidence I can say I haven't heard anything I didn't like, and this is installed in a finitely-tuned room. I'll happily purchase another...
auto mute circuit prevents on/off pops. nice metering. nice size. short protection, and it doesn't get very warm.
Ease of Use
It's a basic amp with no frills but terrific quality. plug in and go.
solid, cool running, low profile controls that don't snag loose clothing, solid chassis. Outstanding sound.
I wanted a high quality amplifier for room monitors. I didn't want, and I didn't want to pay for, extra features. Solid amp, does what it should, does it well. I'm sold.
The Wow Factor
Doesn't advertise itself.

Musical Background:

active musician

Musical Style:

rock, jazz, ccm
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