Chord SPM-2400 Multi-Channel Amplifier - 5 x 135W

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Striking home theater amplifier from Chord that was hand-made in the UK using the best engineering and parts available.

An extremely sophisticated design including utilizing a variable speed fan for proper cooling for all that power.

Provides 135W to each of its five channels at 8 ohms. 

In beautiful condition with only minimal signs of use. 

Serviced and tested in our lab and working perfectly, producing all 135 watts of clean power. 

Specifications:
Power output:  135W (For each of the 5 channels)
Frequency response:  0.8Hz to 46kHz
Total harmonic distortion:  0.05%
Gain:  30 dB
Signal to noise ratio:  103dB
Dimensions:  16.54" x 5.31" x 12.8"  (420 x 135 x 325mm)
Weight:  33.07 lbs.  (15kg)
Year:  2005

Click here for a PDF copy of the original Sales Brochure

The SkyFi Testing Process for Solid State Amplifiers:

We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage.

We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Finally, we run the amplifier to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. If there is an issue, it will usually be noticeable at this point. If everything reads clean, we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. The amplifier then remains powered on to "burn in" on our test bench for a few hours to make sure there are no heat related issues. If there are balanced inputs available they will be also be tested.

Final testing involves pushing actual music thorough the amplifier. We've learned over time that some issues are only noticeable to a trained ear while listening to familiar source material. Our test bench has reference vintage KEF speakers that we're very familiar with which quickly reveal any discrepancies. Some amplifiers will then move into our listening room where they are tested with our in-house reference speakers of choice.

Please click here for detailed specifics regarding our specialized packing process that separates us from the rest.