15 watts; 8" speaker * 4 essential and fully adjustable Line 6 bass models including Clean, R&B, Rock and Grind; 4 user-programmable channel memories * 3 fundamental Smart Control FX for bass including Envelope Filter, Octaver and Chorus; adjustable opto Compressor with threshold LED * Pro bass amp tone control features Bass, Lo-Mid, Hi-Mid, Treble, and Drive knobs * CD/MP3 input for playing along to any music; headphone/recording output ideal for practicing and direct recording