Boss TU-2 Chromatic Tuner. Ideal for the performing musician. Put it in-line between your instrument and amplifier and tune up on stage anytime. The bright LEDs are great for dark rooms. Works for both bass and 6 string guitars. Look on almost any stage were a band is playing and you will probably find at least one of these tuners. It also can function as a power supply for your other effects.

Features:

• Mute/Bypass select for silent tuning with a single stomp
• 11-point LED indicators and new "stream" meter display tuning discrepancy via speed and direction of LED's (speed of LED movement gets slower as pitch becomes more accurate)
• 7-segment LED displays string and note names, easily visible on dark stages
• Seven easy tuning modes include Chromatic, Guitar Regular, Guitar Flat, Guitar Double Flat, Bass Regular, Bass Flat, Bass Double Flat
• Tuning mode setting and display style choice stored in memory
• Adjustable reference pitch from 438 to 445Hz
• Footswitchable Tuner Off mode preserves battery life by disabling LED's