WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
The VU meters of AudioResearch REF 250/750 are lighted by a couple of led that diffuse the light 360° very well. Does anybody know brand and model of such led? Searching in usual catalogs I can't find it . Tks
