The Complete Guide Whether you need a guitar amp, a sound system, a multi-effects unit for a bass guitar, or a keyboard amplifier, Tipbook Amplifiers and Effects helps you make a good choice. Two chapters explain general features (controls, equalizers, speakers, MIDI, etc.) and figures (watts, ohms, impedance, etc.), and further chapters cover the specifics of guitar amps, bass amps, keyboard amps, acoustic amps, and sound systems. Effects and effect units are dealt with in detail, and there are dedicated chapters on microphones and pickups, and on cables and wireless systems. ©2009, 296 pages.