New Old Stock (NOS) valves at John’s Exchange

Last week I helped unpack newly sourced valves, new old stock. Brands like Mullard Philips and GE, my favourite is genuine never used 6550 A valves as used by Audio Research, only $400 per set of four. Plenty of other weird and less useful valves, eg 12SJ7 and some others. check John’s Hi Fi Exchange.