Hey dawaim ๐
See the manual on page 16, where it states that you can use either of the TS/TRS outputs. “Connecting only one jack to any of the two outputs activates a mono-output mode: the output’s stereo signal folds down into mono. The headphones output then also goes mono”.
As far as I know, Blooper has only mono I/O, so it would be probably best to use a simple TS mono jack cable from Terra to Blooper, as the latter wouldn’t make any use of the TRS.
Hope that helped ๐
