Behringer's ULTRATONE KT108 is an ultra-compact and extremely versatile 15-Watt Keyboard Amplifier with VTC-Technology and Original 8" BUGERA Speaker. The KT108 gives you two channels, each with independent VOLUME dials. A three-band EQ allows you to shape your tone. Behringer's TK108 features VTC Virtual Tube Circuitry that delivers the warm, harmonic tone of vacuum tubes from transistors. It has a CD INPUT so you can play along with your favorite songs, and a HEADPHONES output for private practice.