Hey people. I have a very simple question that i need answered. I have one hcca 15.2 and i have one hcca 25001 amp. I plan on buying another one of each to put in my car but just out of curiosity, both the 15.2 and the 25001 amp have been sitting up unused for quite some time, and i would like to know would that cause any malfunctioning in either of the two? Just curious, Thanks!

Nope. As long as they weren't stored in bad weather conditions like humid, hot, rain, etc.

Sub surrounds seem to be the only thing that deteriorate over time. They have to be played for the spiders to sag. 

 

For older amps, there have been known issues with leaky capacitors. Phoenix gold put out a high dollar collectors amp "outlaw" that had these issues and the caps had to be replaced. So technology has come a ways here as newer caps are solid and less likely to burst and leak.

 

I'd still try my luck at powering any amp on or hooking up any sub.