wolskyr
Interesting. I am looking to upgrade and was considering the 18i20. Losing the loopback function would suck! Who knew that the lowly 8i6 had such a "special" feature ...
The 18i20 may actually have the Loopback. IDK though. It came out about a year after I picked up my 18i6. I can only imagine the FR guys realized how popular the LB function was and perhaps implemented it.
Although I desparately needed the 18i6 at the time and am perfectly happy with it I of course would much prefer to have the 18i20. Even without loopback I could really use those extra outputs (I only have two 1/4" outs and those of course are hooked up to my monitors... kind of sucks).