I don't know if you or anyone else knows as I couldn't find it on the Tech 21 site. Can The PSA-1 be chained with a RBI? I know you can put two RBI's or a RBI & RPM together, just never seen it with a PSA-1. If you could I might be interested.
The PSA-1 has most of the required features to do this. The only thing it lacks is an unaffected output. All this means is that you would need to plug first into an RBI or RPM, and then chain that units unaffected out to the PSA-1's effects return with the 50/50 switch engaged. As long as you are okay with running the PSA-1 second in the chain it would work just fine.
