1pair sequentially numbered Linn Klimax 500 Solo Power Amplifiers in orig boxes - Only 2400$ in Ann Arbor, Michigan For Sale

This listing is for a pair of pre-owned sequentially numbered Linn Klimax 500 Solo power amplifiers in beautiful condition in their original boxes. No dents or dings, a tiny scuff on top of one from it being under another.
Serial numbers xxxx29 & xxxx30.
Linn's Klimax Solo is billed as a single-speaker power amplifier designed for multichannel audio and audio/video systems.
Amazingly each amp is only approx 14" square, about 2½" tall and weighs an only 20 lbs.
The beautifully finished case is precision-milled from two solid sections of aluminum alloy by a computer-controlled multi-axis machine. The top plate is finished off with a vertical jig borer.
The dense construction protects and stabilizes the electronics and functions as a "heat exchanger".
Inside are two circuit boards, one each side of the central exchanger. One board comprises the power supply, the other the audio circuitry. This keeps the signal path simple and short, so as to generate minimal electrical noise.
The Klimax runs on Silent Power Brilliant Switch Mode Power Supply technology, which Linn has been developing in their lower-powered products for several years. The concept isn't new; switch-mode supplies have been powering computers for ages. The potential benefits, according to Linn, are their diminutive size, efficiency, fast response, tolerance of mains input and loads, and "environmental friendliness."
In switch-mode power supply the incoming AC mains is filtered and rectified to generate an extremely high-voltage DC supply of 300 to 350V. Fast semiconductor switches chop up that high voltage and apply it to a small transformer that both transforms the voltage to a usable level for the circuitry to sip from, and provides an isolation barrier from the mains supply.
The transformer can be small because its size decreases as operating frequency increases. The transformer in the Klimax is smaller than a 1½" cube. At 50 or 60Hz it might deliver something around 5W. As implemented in the Klimax, it delivers (according to the specs) on the order of xxxxW!
Fast rectifiers and a small coil and capacitor sit at the transformer's output to filter and convert the high-frequency waveform back to DC for the circuitry. "The reservoir capacitors are about the size of thimbles, but they give better filtering than those the size of beer cans as found in other very powerful amplifiers."