The JOYO JE-307 is a 5-band EQ equalizer for acoustic guitars. A complete preamp kit with phase mode, piezo pickup, built-in tuner and 6.35mm jack input jack. Everything you need to improve your sound is found in this preamp, you can shape the tone and prevent feedback with the phase control and 5 bands of EQ.

When the Phase button is engaged, the guitar tone will produce warmer sounds, for example, when turned off, the Phase can reduce the bass response, which will help prevent feedback in gig situations. The Phase control is perfect for live gigs and recordings. The EQ has all the features you need to sculpt your tone, with Low, Mid L, Mid H, Treble and Presence controls, you will find it easy to dial in and adjust the tone achieved from your guitar. Press the tuner button and the guitar is muted, and chromatic tuning is activated, which is clearly displayed on the LED screen. Tuning is easy, when in tune the indicator turns green. The equalization has a very wide frequency range of 500 HZ to 10 kHz, perfect for acoustic or classical guitars.