Radford, A and R, Leben, Audio Innovations = Busy Workshop

Here’s a picture of my studio workshop taken this morning. You can see at the rear my Radford sta 100s, built as monoblocks in my AD Audio chassis. In the rear is a Leben cs1000p, and in front an Audio Innovations 800 power amp. To the left are two Audio Innovations s500s, in for choke

Radford STA 15-The Tweak

This Radford came into the workshop for a few reasons. Firstly the original cathode resistors had literally dropped out from their solder, through the action of heat over the years and finally overload with some dodgy valves. These were replaced with the superb Mills wirewound resistors. Secondly the owner wanted attenuators fitted instead of the

Radford STA15 Service and Upgrades

This 50 year old amp had been recently fitted with some NOS valves and even before any work sounded very decent. From inspection, it looked like it had had one service in all the years, at which point the main smoothing capacitor was changed. Bradford introduced the STA15 for those who didn’t want the hassle