This cigar box stereo is equipped with a Class D TPA3110 board and Tang Band neodymium magnet, full range, three inch speakers. It has a power switch, volume control, 12 volt DC input and 1/8" mini plug for connection to an iPod, iPhone or other portable source. Every cigar box stereo has it's own sound signature due to the wood type, size of the box and wood thickness. I thought this was poplar, but it seems too soft to be poplar. It perhaps isn't one of the best looking, but definitely is the best sounding I've built so far.