I've read a lot recently about the Ming Da / Edenlake MC-34A amp - has anyone heard the smaller (and cheaper) MC-34B? It uses 6L6 valves rather than EL34s, but these can apparently be swapped with 5881 or KT66 valves. I'm after a cheap new integrated to introduce me to valves after a Nait 2, listening to acoustic classical and jazz through an Arcam cdp and 90db 6 ohm Rega Jura speakers.