Guys, any info on the following surplus amps:
Onkyo integra A815RX II
Sansui AU-9500DSP
Sansui AU-V7000
Victor AX 900
Yamaha AUX 1000 III
Go surfing and you'll surely find bits of info about these equipment. Onkyo A815 I think is a low-mid model since A817 bids at less than $50 equivalent in Jap auctions. Take note, however, that auction prices quoted are usually 2 to 5 times less than the amount they're actually sold. Only the registers, such as Audiogon in US and Selworld in Japan, provide realistic pricing for these equipment. Pricing generally reflects model quality and condition of the equipment. However such market data are now for sale but indicative pricing as per current auction offers, not starting bids which could go as low as Y1,000 even for high-value equipment, are still available.
The Sansui AU9500 is a classic made in early 70s, so it should be about 30 years old. If that's the case, beware, sooner or later you'll have to change its caps and transistors and unless you're a collector or avid Sansui fan, it could be a major hassle. If what you saw looks new, it could be a re-issue of the old classic 9500 and at prices you quoted, it's a "giveaway." The company started issuing oldies to the domestic market at extremely high prices to compelement its release of Alpha series in late '80s to signify its shift to specialized audio manufacturing (although it maintains commercial-line subsidiaries for low-cost appliances in Japan, China and India.) I'm not familiar with the AUV7000 but it could be part of the brand's audio-video commercial line.
You could check the Victor amp with the JVC catalog since the two brands are the same (like Diatone and Mitsubishi, Lo-d and Hitachi, Optonica and Sharp, etc.) The model number 900 could mean it's up on its scale but then, JVC isn't really that famous for hifi. Check the Yamaha website for the AUX-1000III, especially the download link, I think you could still get a copy of that model's manual. I still have the old Yamaha CA1000III (on my attic) and it's rated 100wpc RMS. If the equipment you saw is not on the Yamaha website, send them an email, you'll be surprised to get a reply in one or two days.