DOUBLE G0 Guitar Preamplifier Preamp Pickup Acoustic Chorus Delay Reverb Effects Soundhole Pickup with Built-in Rechargeable Battery for 95-110mm Diameter Sound-hole Guitar

Sound hole installation, no need drill hole, easy to install. The preamplifier is suitable for mounting on guitars with sound hole diameter during 95~110mm. Cork pad clamp design, no damage to paint of instrument. It is a pickup that can be operated on your mobile phone (download the free APP: Double+). It has various DSP effects, including compress, reverberation, chorus and delay. It supports active recording, wireless output, audio, really a magical preamp.