Matrix Universal Clip on Banjo Tuner Pickup and Chord
Now you can buy the clip-on banjo tuning pickup for interference free tuning as a separate accessory! Clips onto the banjo bridge and plugs into most brands of tuners.
These work great for no interference tuning. Simply plug it in to a tuner like the CA 30 below and clip it to the bridge. This will provide an uninterrupted signal to the tuner. It works great for fine tuning and especially when there is any outside noise. Also when the tuner clip is on the bridge it quiets the banjo for more private tuning.