The invention discloses a multi-channel power supply with guitar effector DI cassette, comprising a shell, output ports, and a non-slip layer, with an audio amplifier interface formed at left of the shell rear end; it has reasonable structural design, high practicability and multiple output ports for powering effectors; the voltage and current thereof are varied to meet different users for voltages and current; the power supply is stable, safe, reliable; with four voltages: 5V, 9V, 12V, and 18V, compatible effectors are wider; the audio amplifier DI can be connected to mixing console through Canon seat, with jacks at both ends, one end connected to audio amplifier, the other to electric guitar; the amplifier can be connected to headphone accompaniment for performance and practice; the device comes with a USB charging port; the functions do not affect each other and effector power without noise; the non-slip layer increases the stability.
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