THIS AMP IS BROKEN. WHEN POWERED UP, MY POWER SUPPLY GOES HAYWIRE AND THE DIGITAL

CROSSOVER GOES IN AND OUT. I HAVE NO IDEA WHAT IS WRONG WITH IT. THE BOARD LOOKS CLEAN.

this auction is for a rare gem of a car amp. it is an a/d/s pq40.2j, 4 channel, 600 watt amp that has been 

tuned by T. Ishida from japan. he tuned amps for several companies that were exported to japan.

i was an a/d/s dealer and i sold these new. a/d/s shipped a lot of their product overseas for sales and 

japan had a lot tuned by this engineer. he is famous, mostly in japan, for his tuning capabilities. he replaced a lot

of parts with higher end ones like, caps, op-amps, mosfets, and more. the normal pq40.2j already sounded

great but he enhanced that to be even better. this will run a complete moderate sized system with clarity and

headroom. 

this amp sounds amazing and it sold for quite a bit in 2001. it has a completely digital crossover with lots of

frequency possibilities. it comes with the owner's manual, the ishida tag, and the amp. there are no plugs

with this amp.

this amp does:

4x100 at 4-ohms

4x150 at 2-ohms

2x300 at 4-ohms bridged

alaska and hawaii will have to pay more so ask first please.