Precise Acoustic Fit：JOYO AC-40S designed specifically for acoustic guitars, it has a unique amplification curve that precisely optimizes the sound of each frequency range, ensuring excellent sound quality

Rich Sound Effects：AC-40S acoustic amp with a high - performance chip inside, it provides three stackable DSP digital effects - CHORUS, DELAY, and REVERB, enriching the music with layers

Diverse Connectivity：The acoustic amplifier equipped with Bluetooth, AUX IN interfaces, as well as USB - C OTG live - streaming port and 3.5mm port, meeting various connection requirements

Vocals Enhancement：The acoustic guitar amp supports microphone input, with the circuit optimized for vocals. It has an independent reverb, and the microphone channel allows for bass and treble adjustment

Portable & Practical：AC-40S acoustic amplifier built-in rechargeable battery up to 6 hours playing, and it supports guitar stands, meeting the needs of outdoor and various scenarios