The 274B Rectifier

The 274B. A quad of Modern 274B rectifiers. The quintessential 274B is a Western Electric tube, but sadly I have no examples of the original. These are all modern Chinese tubes; a Valve Art 274B, Full Music and Sophia globe 274B, and finally the best sounding of this lot, the Sophia “Aqua” 274B. Spec sheets for the 274B can be found here: here.