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.

Stereo or Bridged Mono Operation    For Recording/Live Performance/Installs    50W per Channel into 8 Ohms    Stable Bipolar Circuit Design    High-Current Transistors    Protection Relay Circuitry    Front Headphone Jack    5-Segment LED Metering per Channel    Convection Cooled    Rack-Mountable (1 RU)

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

Related Questions and Answers

Q: 1. Are there Gears for focus zoom and iris? if so what pitch is each gear?

A: The Canon CINE-SERVO 15-120mm T2.95-3.9 Zoom Lens Kit with SS-41-IASD Servo (EF) (B&H# CAE15120EFK) has 0.8 MOD / 32 pitch focus gears and 0.5 MOD / 51 pitch gears on the iris and zoom rings.

Q: 2. I just purchased this. Can I use the zoom and focus controls at the same time? Do I need to add DC Power?

A: Yes you can. You do not need to add DC Power.

Q: 3. Any idea as to how long this might power a B4 lens? I know all lenses differ as well as usage, just looking for a rough idea.

A: I can usually get through most of the day

Q: 4. What size clear lens filter fits this lens?

A: The Canon CINE-SERVO 15-120mm T2.95-3.9 Zoom Lens works with 112mm screw on filter sizes. A clear filter that would work would be - Haida 112mm NanoPro MC Clear Filter BH #HAHD3290

Q: 5. Is Samson SP04 Shockmount compatible with this mic stand?

A: Yes, both the stand and mount use 5/8" threading.

Q: 6. Will this mount work with a Behringer C-1?

A: The SP01 does fit a number of condenser microphones but there is not a universal diameter. Although it will most likely work, we cannot guarantee exact compatibility. Sorry we could not be more specific.

Q: 7. Will a Nady SCM-960 fit in this shock mount?

A: I asked this question after placing my order. I'm happy to report that my Nady SCM-960 does have threads and it fits perfectly with the SP01 shock mount. This is interesting because in the photos of the Nady SCM-960 it doesn't appear to have threads. It also came with a mic holder.

Q: 8. What is the thread size or thread kind that the microphone screws into slit can work with the shock mount. Not the mic stand thread.

A: The threading provided in the shockmount to mount the mic is not standardized and in many cases is model dependent. These are not universal mounts. The SP-01 mount is designed to be used with select Samson mics including the C01, C03, CL7, CL8, C01U, C01U Pro and C03U.

Q: 9. can this lens be used on Sony Fx 6 ?

A: Yes, the Canon CINE-SERVO 15-120mm T2.95-3.9 Zoom Lens with 1.5 Extender (EF Mount) can be adapted to the Sony FX6 with a Sony E-Mount to a Canon EF-mount lens adapter.

Q: 10. Does this mount fit the Blue Spark condenser mic?

A: Hello, Thank you for contacting Samson Technologies. This shock mount will work with your specific microphone. If you have any other questions or inquiries, please let me know at any time. Best Regards, James