The JOYO AT-08 is a wah and filter pedal.
Key identified features include bass-guitar use and analogue circuitry.
- Brand: JOYO
- Model: AT-08
- Product type: Wah & Filter Pedals
- Features: Bass, Analogue

This is a New JOYO AT-08 Wah Pedal from Joyo, listed in Wah & Filter 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.
Wah effects sweep a resonant band-pass or related filter through the frequency spectrum, creating the vowel-like movement associated with the treadle. Envelope filters move automatically in response to picking level, while fixed and sequenced filters use other control sources. Sweep range, resonance, direction, sensitivity and input loading determine whether the response is vocal, percussive, smooth or sharply synthetic.
The signal is shaped by continuously varying electronic circuitry rather than being converted into a digital effect algorithm. Component choice, operating voltage and circuit tolerances influence headroom, noise, clipping texture and the small variations in response between designs.
Voiced or equipped to retain low-frequency fundamentals and the higher headroom of a bass signal. Clean blends, crossovers and bass-specific filter ranges can preserve weight and articulation while the effected portion adds harmonics, movement or ambience.