I have a 100.2. Excellent amplifier. A couple of things to keep in mind is that AR will not service the amplifier (not even recap it) since the transistors are no longer available. If those transistors are damaged or stop working while in their care they are basically screwed and owe you an amplifier. Second thing is that the rail voltage is 50 volts and the power supply caps are rated at 50V instead of 63V. This will definitely shorten the lifespan of the caps. Replacing those caps are a pain in the neck as you have to practically take apart the amplifier. It took me the better part of two weekends to change out those caps so a professional shop is going to charge quite a bit to do the job.
Before you buy, you have to look under the top cover and make sure those power supply caps are not bulging on top or leaking.
Before you buy, you have to look under the top cover and make sure those power supply caps are not bulging on top or leaking.