This is the Neunaber Chroma Chorus. By connecting it to a PC, you can also install other Neunaber effects. Although chorus is the default, you can change it to effects like reverb and delay. Also, when used in conjunction with the EXP controller currently for sale, you can save the tones of four effects with two preset settings. Actual usage examples: Channel 1 - Wet reverb…A) Short reverb, B) Long reverb Channel 2 - Shimmer reverb…A) Short, B) Long Channel 3 - Delay…A) Short, B) Long Channel 4 - Chorus or Flanger…A) Subtle setting, B) Extreme setting I used it in this way. It feels like a multi-effect unit, but the operability is like a compact effector. All the sounds are high quality and usable. I'm selling it reluctantly to downsize my effects board. Thank you. - Model name: CHROMA - Type: Stereo Chorus - Brand: Neunaber - Controls: mix, tone, width - Connectors: Input/Output jacks - Package: With original box Thank you for viewing.