Pioneer DEQ-S1000A2 - Plug and Play DSP with 4 Channel Digital Sound Amplifier 7426871615953 | eBay
DEQ-S1000A - Universal Sound Processor for integrating factory installed head units (OE sources) with aftermarket amplifiers and speakers | Pioneer Electronics USA
DEQ-7600 - Customize your Music & Songs with the Universal Digital Equalizer | Pioneer Electronics USA
Best Buy: Pioneer 5.1-Channel Digital Audio Processor for Select Pioneer In-Dash Decks DEQ-P8000