Radix

These are about the simplest, no-nonsense distribution amplifers on the market.  Made  exclusively for BSW I believe. 

A simple +/- 15V supply with two-three tab regulators and 34- NE5534’s.  Yes, 34 of them. 

This one needed a -15V regulator. That’s it.  Simple troubleshooting- the light was out!  Sometimes a $1.50 fix is nice.