Old School Pioneer DEQ-9200 Digital Signal Processor. Brand new unit in the original box with all accessories. Almost impossible to find one in this condition. When Eclipse brought DSP technology to car audio, it was all the rage. But, it was difficult to use and the tuning was a pain. Soon all the major brands jumped on board and produced similar units. I’ve owned, used and/or installed most of those units over the last 30+ years. In my opinion, this is the most tunable and user fri...endly unit of all of them, including the ever popular Alpine ERA-G320 and Alpine 3342. *This unit is 30 years, so the following conditions of sale apply. Although it is unused and has been stored properly, there is no longer any manufacturer’s warranty and I cannot offer any guarantee. This is due to eBay’s coddling of dishonest buyers. Professional installation suggested. *Alpine ega-g320, Alpine 3342, Pioneer Deq-9200, Pioneer Deq-7200, DSP, Digital sound processor, Digital sound processing, Pioneer Carrozzeria Deq-99, Pioneer Carrozzeria Deq-700, Pioneer Deq-7600, Old school DSP, Old school car audio, old school equalizer,