I have Quote: Yes!! Thanks for that...I was trawling through this thread a while age, and the Phillips 6922 6DJ8 ECC88 was recommended!! I must have read it wrong.  I have since been looking at the  12au7 range and there are different manufacturers with different characteristics...

I haven;t a clue what I am doing!! I have this little Bravo amp and I have bought a JAN Philips NOS Low Noise 6922 6DJ8 ECC88 http://www.ebay.co.uk/itm/370381963960?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 It doesn't work...I haven;t a clue why not!!

Is there any modification needed...or is this just plug & play?   Quote:  

Hello Folks! I am new to all this and i find it fascinating! I always suspected these should be a forum for the worlds most popular type of headphone..in ear! I have an iRiver hi140 mp3/OGG player. I have tried the Sound magic pl50 in ear phones..I found them insipid and not a patch on...