Korg has announced a new addition to its ever-popular guitar tuner range, the TMR-50, which combines a chromatic tuner and metronome with a built-in recorder that can tape up to 20 minutes of audio.

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Donner’s DBM-100 is an interesting little box of tricks. It offers a handy onboard tuner, a full-featured digital metronome, and a trainer mode that seems more like an afterthought than a feature.