Had mine for a day now,Does sound good for the money ,thou is really a desk top toy.Got a pair of 1960's Philips (dutch) 6DJ8 valves last night on fleabay.Will give it a try,if anybody in uk wants the other one give me a pm .My volume pot is inky black at all settings,i must have a faraday cage i didn't know about,!! May not work best with grados,but they are all i have these days so cannot compare..Might just go back to the LD1+ later tonight..Nice blue glow thou..