Krell KAV-500 Multichannel Theater Amplifier


100W x 5 channel amplifier from the Krell's best era. Beefy 1000VA transformer. Super reliable and able to rock most speakers.

Features balanced and single-ended inputs, along with a standard 3.5mm 12V remote power trigger input.

This amplifier was tested in our lab where it performed very well and delivered every Watt it's supposed to. Features a 

Very clean with no significant signs of use.

Perfect partner to our favorite vintage processor the Krell Audio + Video Standard linked here.

Please see our photos or the Owner's Manual below for full specifications.

Krell KAV-500 Owner's Manual

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.



Original Box







Yes - Power

Physical Condition


Working Condition


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