The 4 Band Tuner Equalizer , also known as the preamp and subthreshold, is a tuning device.

It is produced as an additional accessory used to increase the sound of guitar, violin, oud, baglama and cümbüş as well as many other acoustic instruments through the amplifier.

This device, which is considered a professional sound amplifier and mixer at the sound level of the instrument it is mounted on, with a 4-band tuner equalizer , functions as a microphone, so to speak.

This Prener LC branded product is a CE certified product manufactured to the same level of quality and standards using Shadow, Schaller, Dimarzio, Fishman and Shure technology.