Pioneer QA-800-A Solid State Amp Receiver - On Demand PDF Download | English
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VINTAGE 1970s PIONEER QM-800A 4 CHANNEL QUAD POWER AMPLIFIER WITH ORIGINAL BOX | eBay
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Pioneer QA-800A Solid State Four Channel Amplifier Manual | HiFi Engine
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Cowan Audio Services - Pioneer QA-800A - This four channel quadraphonic amplifier needed a complete overhaul. Every small signal transistor was replaced and all the electrolytic capacitors as well. These Pioneers used
Pioneer QM-800 4 Channel Power Amplifier Manual | HiFi Engine