It's very easy! Perfect pitch for all bassists. TN-1B is tuning meter only for a bassist. It detects the pitch of notes that picked up by a microphone, and it displays the difference from the right pitch. It's very easy to use. High-precision, high-performance. Supports tuning-sets below. ・Standard. ・Half Step Down. ・Full Step Down. ・1&1/2 Steps Down. ・Drop-D. ・Lowered Cello.