Unlimited uses: electric and acoustic guitar, keyboards, computer audio, MP3 or CD playback, mini-PA, field recorder playback and much more Get great instrument and vocal tones with stereo sound and built-in effects: overdrive, chorus, delay and reverb Truly portable amplification: fits in a briefcase and runs on batteries! Play any instrument along with your favorite songs, or sing along using Center Cancel for karaoke Small Size, Big Sound At just 11-1/16"" (W) x 4-1/4"" (D) x 7"" (H), no larger than a briefcase, MOBILE CUBE is a traveler’s dream. Battery-powered, it can be operated anywhere — just plug in, turn on, and jam. Two high-performance speakers provide stereo sound that defies MOBILE CUBE’s physical size. Built-In Stereo Effects Equipped with Roland’s legendary FX engine, MOBILE CUBE offers high-quality stereo reverb and chorus effects. Sweeten your vocals, add fire to your guitar tone, or immerse your mixes in a rich stereo sound field. Center Cancel is also provided for minimizing vocals in pre-recorded music — great for karaoke and play-along performance. All Instruments Welcome Thanks to its variety of inputs, MOBILE CUBE accommodates microphones, keyboards, acoustic guitars, electric guitars, MP3 players and more; no other instrument amplifier of this size has a stereo input port. Use it as a practice amp at home, while traveling, indoors or out. It’s great for parties, karaoke and vocal lessons. Connect it to a mic stand for use as a monitor speaker or micro PA.