Small, cool and feature-packed, BOSS' new TU-88 Metronome/Tuner combination device is a must-have for guitar and bass players on the go. It provides needle-accurate tuning, a metronome and a headphone amp with speaker simulator for monitoring effects, including compact pedals. Features include 3 tuning modes (Chromatic, Guitar, Bass), Flat Tuning function and ACCU-PITCH verification with an audible beep. Built-in headphone amp lets you tune, jam and play your effects with headphones or direct recording. Black cabinet.