Yamaha Natural Sound Digital Sound Field Processor/Amplifier DSP-E1000

Yamaha DSP-E492 Natural Sound AV Sound Processor/Amplifier

Yamaha M-35 Natural Sound 2/4 Channel Power Amplifier No Remote Tested Works

Technics SH-AC300 Digital Surround Processor Dolby AC-3 5.1 w/ Remote Tested

Yamaha DSP-1 Natural Sound Digital Field Processor No Remote

Yamaha DSP-A1000 Digital Stereo Processor Dolby Surround Sound Amp

Yamaha A-400 natural sound stereo amplifier

Yamaha DSP-1 Digital Sound Field Processor - No Remote - Needs battery replaced