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Knoll MX1255 Twelve Channel Amplifier

55 watts 12 channel Amplifier

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Retail Price: $999.99


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  • High Current twelve channel amplifier rated at 55 watts RMS per channel (100 watts peak).

  • Electronic Link feature connects stereo inputs channel two through six to channel one.

  • Side-mounted hush-tone fan for internal cooling.

  • Individual and automatic channel resetting protection for low impedance, overheating, overloading, overvoltage and undervoltage.

  • Two rack spaces (3-1/2") with optional rack mount.

  • Individual level gain controls for all channels.

The perfect choice when sound quality is a specifc requirement

The Knoll MX1255 is our fourth generation high current multichannel amplifier. It's a class A/B amplifier that produces 55 watts per channel at 8 ohms and 70 watts per channel at 4 ohms. Our legendary amplifier reliability (20+ years) is built into each and every MX1255.

The class A/B amplifier design circuitry was chosen simply because of its obvious sound quality superiority over other high efficiency designs such as class D or class H.

Knoll multi-channel amplifiers sell worldwide because of their legendary reliability and unparalleled sound quality. Features such as gold RCA input jacks, detachable speaker wire connectors capable of using 12 gauge wire, individual channel rear mounted gain controls, and more set this amp apart from all others in its class. An optional 19" rack mount adaptor kit is available.


Inputs Gold RCA jacks with adjustable gain
Input impedance 50k ohms
Outputs 5 way gold binding posts
Output power 55 watts RMS per channel (8 ohms)
Peak output power 100 watts per channel (8 ohms)
Ideal impedance 4 - 8 ohms
Frequency response 10 Hz - 40 kHz +/- 1dB (1w)
S/N ratio over 105 dB A weighted (50 watts)
THD distortion less than 0.1% 20 Hz to 20 kHz
IMD distortion less than 0.01% 60 Hz 7 kHz 4:1 (SMPTE)
Dimensions 17" x 3.5" x 11.5" (432 x 89 x 292mm)
Fan Noise quiet 28 dBA
Power (maximum) 750 watts at 117 VAC or 230VAC
Weight 21 lbs (9.5 kg)













Note: Specifications subject to change without notice.


Height (inches) 17"
Width (inches) 3.5"
Depth (inches) 11.5"
DLNA Certified No
Optical Digital Inputs -
Optical Digital Outputs -
Coaxial Digital Inputs -
Coaxial Digital Outputs -
Audyssey No
AirPlay No
HDMI Standby Passthrough No
USB Front/Rear No
Component Video Inputs No
Component Video Outputs No
Channels No
Watts Per Channel No
HDMI Inputs No
HDMI Outputs No


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