The JOYO AD-2 is an acoustic-guitar effects pedal.
Key identified features include EQ control.
- Brand: JOYO
- Model: AD-2
- Product type: Acoustic Effects Pedals
- Features: EQ

This is a New JOYO AD-2 Acoustic Preamp & DI Pedal from Joyo, listed in Acoustic Effects Pedals on Just Pedals. Read More below.
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In the current JustPedals catalogue, Joyo is represented by Distortion Pedals, Overdrive Pedals and Amplifiers & Headphone Amps. Current listings include Cab Box, D56 Fuzz and D54 Delay. That makes the range relevant to players looking for drive, gain and clipping, plus time-based effects and ambience. Check each model for its exact circuit or processing platform, controls, power requirements and connections, particularly where the catalogue includes both pedals and supporting gear.
Acoustic effects pedals are voiced for piezo, magnetic or microphone-based acoustic instruments, where pickup impedance, body resonance and feedback can make the source difficult to balance. This group includes preamps, EQ, compression, ambience and anti-feedback tools. Look for input impedance, notch filters, phase switching, balanced outputs and clean headroom. The right design should preserve the instrument’s attack and body while giving the amplifier, mixer or PA a more stable signal.
EQ changes the level of selected frequency bands rather than adding one fixed effect. Graphic, parametric and sweepable designs can remove resonances, shape a drive stage or place an instrument more clearly in a mix. Centre frequency, Q, cut and boost range, output headroom and bypass type all matter. EQ before gain changes the frequencies that clip; EQ after gain acts more like finished tone shaping, so placement should follow the problem being solved.