We can supply spare valves / tubes for your Radford. We are a fan of JJ valves as they offer excellent value and performance. We stock JJ’s excellent “E34L”. We fit this valve as standard in amplifiers we supply, unless otherwise stated. We also stock JJ GZ34s, which we fit as standard in our STA15s.
For the input valves we have a selection of quality NOS available including military spec 6U8 / ECF82s