This AK-270 version has a tulip stereo input at the back and also at the front with 3.5 mm. The front closes the rear connection when you plug in the stereo plug. The volume is sufficient for a small party and it even fits in your palm, so it is really small, compact and easy to carry, also great for screwing 2 speaker cabinets together with handles and this amplifier on top, an MP3 player and a lead-acid battery for outside.[Source : Wish]