This^^^^^ I was about to mention the same thing. The 300X1 can literally fit in your back pocket!There are several new compact amplifiers on the market that eliminated the old power supply design and have much higher efficiency.
RF has their PBR 300x1 or 300x4 versions that are a few years old now.
PUNCH Amplifiers - PBR300X4 - Rockford Fosgate®
I actually just bought a JX250.1 to match my pair of old school JL 8w0's -- still haven't hooked it up yet...wife won't let me install in her car!Thanks for all the options. Anyone ever had any experience with the jl audio xd series amp?
http://www.caraudio.com/forums/amplifier-reviews/560602-review-massive-audio-nano-bit-bx2.html?highlight=massive+audio+bx2So far the massive bx2 looks the part. Has anyone used it before? Any other small amps have an OEM auto sensing music remote turn-on?