Thank you for viewing. The built-in digital delay is excellent. This is an easy-to-use mixer. One of the knob caps is missing, so I'm offering it at a reduced price. Please feel free to make an offer. The CX4 is a professional 4-channel mixer. It has a built-in AC power supply and operates with only a power cable. It's compact and lightweight, with vertical faders for each channel. In addition to input gain and pan, it features a 3-band equalizer for sound quality correction and a delay for reverb effects, allowing for high-quality mixing as desired. It also has necessary functions such as AUX SEND for monitor output, TAPE IN/OUT for input/output with external recording/playback devices like audio players and recorders, and a headphone output. It has a built-in +48V phantom power supply, supporting high-quality recording with condenser microphones that require power. It's ideal for locations that require a compact mixer, such as stores, as well as for recording at home or in a studio. 4-channel mixer: 2 mono channels, 1 stereo channel Built-in +48V phantom power Gain, pan, and 3-band EQ on each input Effect send/return, AUX send output Built-in digital delay NEU CX4 Compact mixer 4CH mixer Lightly cleaned Power tested AC adapter included Only the AUX knob is missing. (See photo 4) This is a used item, so there may be scratches, scuffs, and stains that are not mentioned. Thank you for your understanding and purchase.