I have an ‘81 JMP 2203 that only has speaker out taps for 4 and 8 ohms (all Canadian versions back then were like this apparently). My cabinet is a more recent 1960B Classic with Greenbacks at 16ohms. I’m looking for an attenuator that will shave off a few dBs bringing it down from obnoxious to acceptable gig/stage volumes (so I don’t need bedroom level). I also need a good line out for running a cab sim to FOH as well. What are some of your favorites that will keep me around $300. Thanks.