Interesting thing with Rebote 2.5

[bancika]

I just tested my rebote 2.5 with Firefly tube amp and I couldn't notice that annoying distortion that occured on longer delay times.
Also,, when I tried it with distortion on amp (delay before amp) it was preety good. On my marshall MG15 you can easily hear "dirt", also when plugged directly into PC
Anyone had similar expirience?