Honz Technologies ToneWoodAmp2 Acoustic Multieffect; uses patented technology to vibrate the back of virtually any acoustic guitar with a Pickup to create a range of enhancement Effects; craft, edit and save presets containing up to 4 effects simultaneously (Chorus, Flanger, Vibrato, Reverb, Delay/Echo or Tremolo) via the free Smartphone app; In addition to the four effects, you'll find many advanced pre-amp tools, such as: Mixer with Wet/ Dry Blend, 3-Band EQ, Notch Filter, Compressor, Phase Inversion & Boost "Switch", USB-C Rechargeable for more than 10 hours playing time; the new LifKit System helps it fit perfectly on nearly any flat or curved back guitar; quick and easy magnetic attachment – no Drills or Mods needed; switches easily between instruments; Output to an Amp or PA for Stage operation; Connections: Pickup Input (1/4” Jack); Amp Output (1/4” Jack); Made in USA