I had an MXR-130 receiver for 30 years. It sounded terrific, IMO. At the time I sold it (about three years ago) it wasn’t "worth" more than $200. It needed to be repaired twice for the same reason, having to do with burnt resistors on the top most board (those who read my post elsewhere know I play loud, so the unit got hot) and I (supposedly) didn’t keep enough clearance to cool the unit passively. When the unit was brand new, there was a problem with the relays, and that too was repaired.
I have Bob’s cell number and personal email (albeit the data is a few years old) should anyone be interested. PM me. I also have other carver repair contact info.
I’m reluctant to post this type of info on the forum on account of certain recent posts of mine have been viewed in a negative light. :)
