I am looking to figure out the R20. I have had a couple of older MT recorders back in the day - Fostex 4 track, can't recall the model but it was back in the late 80's and a Boss BR-600. I loved the BR-600 until I could no longer get drivers for Windows 11. So I recently bought the Zoom R20. I record guitars, both acoustic and electric, vocal and sometimes wind instruments.