A fantastic 2 track looper. Bought for live acoustic performances, to be able to switch easily between verse and chorus. I use it with the Roland FS-6 footswitch (and you can programme what each switch does - lots of YouTube vids for this). There are stereo jack inputs, outputs and an XLR mic input, for guitar and vocal looping, too. Drum sounds are good (although I don't use them). The quality of sound reproduction is excellent, and the level for each track can be set.
Cons: Beware of drink!!! Someone spilt a drink on mine and it fried the circuit board, so I'm on my 2nd RC-500 now. You'd think something designed for gigging would be a little more robust. Also, the pedal buttons are small, so I added footswitch toppers.
PROS - The fact I bought a 2nd, having gigged with the previous one for a while, illustrates the value of the pedal. For the money, this is a great loop station. Just look after it!