This is an isocab for recording bass or guitar.

It is made from 2 Rocktron 1x12 guitar cabinets hinged together. One has its speaker removed and in its place is 2 microphone clip goosenecks that allow you to mic the speaker with 2 microphones. Cables run out the back and you can can record with no sound leaking in.

Currently it has a 12" bass speaker in it, or swap in your own speaker.

Trades for guitar stuff or microphones, powered monitors, nice Bluetooth dac receiver or other stuff considered. I have other music gear listed too if you want to combine trades.