TM50 Combo Tuner & Metronome. Slightly more compact than its predecessor (TM40), the TM50 offers a new, large, backlit LCD, which along with bright guide LEDs, offers visual feedback that’s easily seen under all lighting scenarios.The TM50’s full-featured tuner and metronome functions can be used separately or simultaneously for ease of use. A built in microphone and a ¼” instrument input allow tuning compatibility wi...