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Samson Servo 120A Power Amplifier, 105 dB Signal To Noise Ratio

SKU: SA120A MFR: SA120A
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Key Features

  • Experience reliable performance with this Samson power amplifier for small venues.
  • Achieve clean sound quality with a signal-to-noise ratio of 105dB for pristine audio.
  • Enjoy input/output flexibility with RCA & 1/4" jacks, perfect for diverse setups.
  • This durable build power amp delivers 50W @ 8 Ohms, ideal for studio monitoring.
  • Optimize your sound with this compact size amplifier, fitting seamlessly into any rack.
  • Get high power output with bridge mode at 150W @ 8 Ohms for robust, clear audio.
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Special Order?Estimated to Ship: 08/10/2025
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Shopper : Why Did You Choose This?LEONARD W : Great Specs

Reviews about this item

Review Summary

2020-01-15T13:28:23

Rated 5 out of 5

Great for any studio

I have had the unit for a month, I wanted to make sure it was going to be what I needed. A Flat reference amplifier for my warm sounding passive tannoy speakers, I am happy to say that this thing is great. No pops, it has so many securities, I just flip one switch and all my gear starts, I don't have to even turn on everything to then turn on the amp at a low volume. none of that. The sound is exactly what I needed to be able to mix. I highly recommend it. I am running them out of a Saffire Pro unit

Jairo R.

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Samson Servo 120 Specifications

  • Rated Output Power, per channel

    4 Ohm, <0.05% THD+N 60 W
    4 Ohm, 1% THD+N 80 W
    8 Ohm, <0.05% THD+N 50 W
    8 Ohm, 1% THD+N 55 W

  • Bridge mode

    8 Ohm, <0.05% THD+N 120 W
    8 Ohm, 1% THD+N 150 W

  • Typical Distortion, per channel

    THD+N (80 kHz LPF @ 1 kHz rated output power) 0.01%
    IMD (SMPTE 4:1, 60 Hz & 7 kHz @ rated output power) 0.03%

  • Signal To Noise Ratio

    (22Hz - 22kHz bandwidth @1dB below rated output power) 105 dB

  • Frequency Response

    10 Hz - 20 kHz +0, -0.5 dB
    3 Hz - 65 kHz, +0, -3.0 dB

  • Input Sensitivity

    -10dBv on the RCA inputs, +4 dBu on the 1/4" inputs to achieve rated power. (Level control set to maximum)

  • Crosstalk (adjacent channels)

    -75 dB, 1 kHz

  • Output DC Offset Voltage

    +/- 50 mV, DC Servo Controlled

  • Headphone Output Level

    400 mW (into 100 ohm @ 1% THD+N)

  • Dimensions (W x D x H)

    19" x 11.5" x 1.75" (483mm x 292mm x 44mm)

  • Weight

    15.4 lbs (7 kg)

  • UPC Code

    809164005131

About Samson Servo 120

FEATURED REVIEWS

Great for any studio

By Jairo R.

I have had the unit for a month, I wanted to make sure it was going to be what I needed. A Flat reference amplifier for my warm sounding passive tannoy speakers, I am happy to say that this thing is great. No pops, it has so many securities, I just flip one switch and all my gear starts, I don't have to even turn on everything to then turn on the amp at a low volume. none of that. The sound is exactly what I needed to be able to mix. I highly recommend it. I am running them out of a Saffire P...

View full Review

Make your audio experience exceptional with the Servo 120A Power Amplifier. This high-quality, single rack-space stereo power amplifier is expertly designed for optimal use in professional recording studios, project recording environments, and live performances. With its robust power delivery, it can provide 60 watts per channel into 4 Ohms, or in Bridge mode, it can deliver a staggering 120 watts into 8 Ohms. This ensures a comprehensive coverage of the full frequency spectrum, ranging from 3 Hz to 65 kHz, for a sound experience that captures every detail.

The Servo 120A Power Amplifier is equipped with both balanced 1/4" TRS and unbalanced RCA-type input connectors, offering versatility and compatibility with a wide range of audio equipment. It also features 5-way binding post output connectors for secure and efficient connection to your speakers.

The front panel of this advanced power amplifier is user-friendly, featuring independent left- and right-channel input level controls for precise sound customization. The ten-segment LED meters provide a clear visual representation of your audio levels, while the protection LED ensures your equipment stays safe from potential damage. For those seeking a more personal listening experience, the Servo 120A also includes a convenient headphone jack and a speaker on/off switch for private cue monitoring.

In summary, the Servo 120A Power Amplifier is a powerful, reliable, and durable choice for anyone seeking to enhance their audio setup. Its high signal-to-noise ratio of 105 dB guarantees clear, high-quality sound, making it an ideal choice for both professionals and audio enthusiasts.

Samson Servo 120 Features

  • Power to spare - Each channel delivers 60 watts of power into 4 Ohms (or, in Bridge mode, 120 watts into 8 Ohms)
  • Clean, crisp sound - Impressive audio specifications such as .01% THD, S/N of 105 dB, crosstalk of 75 dB and frequency response of 3 Hz to 65 kHz guarantee ultra-clean sound quality in any live or recording environment
  • Independent input level controls for each channel with 41-position detents
  • Ten-segment LED meters for each channel continuously display power output levels and allow you to correct for overloading (clipping) conditions
  • Front-panel Protection LED shows you at a glance overheating or faulty wiring conditions
  • Innovative front-panel Speaker on/off switch and dedicated headphone jack enables private cue monitoring of the input signal
  • Both electronically balanced 1/4" TRS and unbalanced RCA-type input connector jacks are provided along with 5-way binding post output connectors
  • Convection cooling (no fan) makes for whisper-quiet operation even in critical listening environments such as recording studios
  • Unique bipolar circuit design that continuously keeps DC output during idling at or near 0 volts (thus keeping idle speakers at their zero point). This serves to minimize heat overload problems by effectively preventing the Servo 120a from applying power when unnecessary
  • Protection relay circuitry (linked to the DC offset circuitry) that prevents "thumps" when powering on or off. This means that you can use the Servo 120a with a single power strip into which a mixer or other audio devices are connected, without danger of damage to connected speakers
  • Toroidal transformer power supply
  • Rugged construction (an all-steel chassis with a titanium finish and a lightweight anodized aluminum heat sink) makes the Servo 120a eminently roadworthy
  • Flexible design allows the Servo 120a to be used free-standing or, with the use of included rack ears, mounted in any standard 19" rack (taking just a single rack space)

Product Documents

User Manual

Key Features

  • Experience reliable performance with this Samson power amplifier for small venues.
  • Achieve clean sound quality with a signal-to-noise ratio of 105dB for pristine audio.
  • Enjoy input/output flexibility with RCA & 1/4" jacks, perfect for diverse setups.
  • This durable build power amp delivers 50W @ 8 Ohms, ideal for studio monitoring.
  • Optimize your sound with this compact size amplifier, fitting seamlessly into any rack.
  • Get high power output with bridge mode at 150W @ 8 Ohms for robust, clear audio.

What's in the box:

  • Samson Servo 120 Power Amplifier
  • AC Power Cord
  • Samson 3 Year Warranty