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


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List Price: $249.99

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Product Highlights

  • Power to spare
  • Ultra-clean sound quality in any live or recording environment
  • 01% THD S/N of 105 dB crosstalk of 75 dB
  • Frequency response of 3 Hz to 65 kHz
  • Independent input level controls
  • Ten-segment LED meters
  • Front-panel Protection LED
  • Innovative front-panel Speaker on/off switch
Samson Servo 120: Picture 1 regular $199.99

About Samson Servo 120

The Servo 120A is a single rack-space stereo power amplifier which is optimized for use in both professional and project recording studio environments as well as for live performance. It delivers 60 watts of power per channel into 4 Ohms (or, in Bridge mode, 120 watts into 8-Ohms) over the full frequency spectrum, from 3 Hz to 65 kHz. Both balanced 1/4? TRS and unbalanced RCA-type input connectors are provided, along with 5-way binding post output connectors. Front-panel controls and displays include a power switch, independent left- and right-channel input level controls; ten-segment LED meters, protection LED and a convenient headphone jack and speaker on/off switch for private cue monitoring.

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)

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)
15.4 lbs (7 kg)
Mfr #
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