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Knoll MA225e Eco-System™ Integrated Stereo Amplifier

25 watts X Channel High-Fidelity Integrated Stereo Amplifier

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Retail Price: $199.99


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The MA225e is a 25 watts per channel high-fidelity integrated stereo amplifier. It is designed for wall-mount or SMC installation. The integrated amplifier features a volume/gain, bass, treble and balance controls.

The MA225e is designed to meet the amplifier needs of custom installed systems where high-quality sound is a specific requirement.

The unique Knoll Eco-System™ circuitry saves energy (and money) by automatically detecting if the amp should be turned off when not in use. There is no power switch as this cost saving feature is fully automatic.

Key Features:

  • Eco-System™ circuitry saves energy (and money) and is fully automatic.
  • Versatile integrated amp, includes volume/gain, bass, treble and balance controls.
  • Each amplifier has 25 watts per channel rating into 4 ohms.
  • Each channel is protected from overheating, overloading, overvoltage and undervoltage. The protection circuitry automatically restores the amplifier channel as soon as its parameter returns to the safe operating area.
  • Wall mount or smcSMC mount. Fits almost anywhere.
  • 2-8 ohms stable. Goes with almost any speaker.
  • Gold RCA inputs for years of reliable service.
  • Shipped with its power supply (100-240 VAC mains).



Inputs Gold RCA jacks with adjustable gain
Input impedance 55k ohms
Outputs Detachable 4 position connector
Output power 25 watts RMS per channel (4 ohms)
Peak output power 40 watts per channel (4 ohms)
Ideal impedance 2 - 8 ohms
Frequency response 10 Hz - 40 kHz +/- 1dB (1w)
THD distortion Less than 1% 20 Hz to 20 kHz
IMD distortion Less than 0.5% 60 Hz 7 kHz 4:1 (SMPTE)
Dimensions 6.5" x 2.5" x 2.5" d (16.5 x 6.4 x 6.4 cm)
Power 30VDC at 1800mA


Height (inches) 6.5"
Width (inches) 2.5"
Depth (inches) 2.5"
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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