I have just got a Roland Micro Cube Bass RX for bedroom practice and I absolutely love it. I'd previously been playing through an old guitar amp and just can't beleive how much better my bass sounds. Anyway I wondered whether it is possible to connect my Roland amp to a larger amp/PA in a rehearsal room to replicate the effects the Roland produces?
Maybe try coming out of the REc Out on the Roland to a PA channel.
The info above is correct. I have the same Roland amp. Nice little battery powered unit. On the back of the Roland is a 1/4" jack labeled REC OUT/PHONES. Go from that output to the input of the PA and you're good to go.