Roland CB-100 DEMO/USED Cube Bass Guitar Amplifier 100-Watt powerhouse bass amplifier with 12 coaxial 2-way speaker 8 COSM amp models and 5 digital effects - chorus/flanger/T-wah, independent delay/reverb 4-band EQ, compressor, and Shape switch for detailed adjustments Balanced output (with pre/post switch) and Line out for connection to mixers Recording/Phones output for private practice and recording applications