This is a New JOYO R-09 VISION Dual Channel Modulation Pedal with 18 Effects 9 per Channel Stereo Series Parallel and Tap Tempo for Guitar from Joyo its found in our Modulation Pedals on the Just Pedals menu. Read More below.
As an affiliate partner, we may earn a small commission when you buy through our links — at no extra cost to you.
The JOYO R-09 is a modulation effects pedal. It is intended for adding movement and modulation effects to an instrument signal.
Key identified features include stereo operation and tap-tempo control.
JOYO Technology is a Shenzhen music-gear company whose range goes well beyond stompboxes. Its official catalogue covers guitar and bass amplifiers, acoustic and busking amps, effects, power supplies, interfaces, wireless systems and accessories. JOYO also says it develops acoustic-core technology and has applied for utility patents. JustPedals listings include the JF-21 Splinter distortion and JF-319 Green Legend overdrive, alongside mini amps and power adapters. That breadth matters when comparing products under the JOYO name: some are effects, while others support the rest of a guitar or bass rig.
Modulation changes a signal through a continuously moving control source. This broad category covers effects that alter delay time, phase, pitch, amplitude or filtering to create rotation, movement and evolving texture when no narrower effect family is dominant. Waveform, rate, depth, stereo phase and control routing determine the shape and spatial behaviour of that movement.
Processes, creates or passes two audio channels. True stereo preserves separate left and right inputs, while mono-to-stereo effects generate spatial differences internally; routing, phase behaviour and whether trails remain stereo determine the resulting image. Some outputs sum to mono when only one socket is connected, which can change level or modulation depth.
Measures repeated foot taps and converts their interval into an effect rate or delay time. Subdivisions translate that pulse into dotted, triplet or other rhythmic values, while averaging and range limits influence how quickly and accurately the tempo settles.
