I was using this as my main looper, but I'm selling it because I bought a new one. There are few scratches and stains. The reason it's listed as "as is" is because the effect sound doesn't output from the Mono output. The effect sound does output from the other Stereo output, and it works fine. There shouldn't be any problem for those who don't use stereo. No claims and no returns. High-function looper with 4 loops and effects. - Model Name: DITTO X4 LOOPER - Brand: tc electronic - Number of Loops: 4 - Effects: FX - Control Knobs: 5 knobs - Bottom: Non-slip