I have my HK802SX up for sale. It is 9/10 cosmetic and 10/10 mechanical. Only reason Im selling is I am upgrading amps. Let me know if you have any questions! Plenty of refs on ca.com and ebay!
Are you looking to get more output then the MA amp. I have a Cadence ZRS-9000 that I am not using an longer that I would be willing to trade your amp plus cash on your end. PM me if interested I can ship this week.