On my headfive, I can't really hear any difference, so its usually switched off. Does anyone feel it is headphone dependent? I'm currently using some old Sennheiser Ref 540's. Paul

As a long term sufferer of tinnitus in both ears I can sympathise, but this only really becomes an issue for me when its really quite and then the ringing intrudes. When listening to music it really is way in the background. I will say, and several others have intimated the same issue, in so...

Still only got one set of headphones (Sennheiser 540 ref) and I've had them for 20 years. I'm on my second headphone amp (headfive) because my first one is no longer operational (a Tim de Paravicini designed unit) after 20 years of service. So I guess headphones may be due for a change, but the...

Quote: Originally Posted by NotoriousBIG_PJ I had a pair of the ones on the right. They were detailed and full sounding, but were lacking clarity and sounded very 'off'. Where can I source the tube on the left? Biggie. Chelmer in the UK - but you will have to ask them to select...

Quote: Originally Posted by toastmaster Not to mention that the Meier crossfeed seems to be regarded as one of the best. Having just received my Headfive amp, I've decided that the crossfeed facility is virtually pointless - difference is so small I'm not sure I/m really hearing...

Quote: Originally Posted by NotoriousBIG_PJ I tried a pair of brimar 13d5's in my amp and the tone was down right terrible. Which 13d5's do you use? Biggie. Brimar http://groups.msn.com/Tubeaudiopicpo...oto&PhotoID=10 the ones on the left & definitely NOT the more common...

Quote: Originally Posted by Ferbose I have a Cayin HA-1A and which uses 12AX7, 12AU7 and two EL84. I want to try more options at the 12AU7 position. I heard that 12BH7 is compatible with 12AU7, but Google search gave me conflicting answers: some say the pinout is different, but som...

Quote: Originally Posted by HFat BTW, the crossfeed is a godsend with the 580s coming from Beyers or AKGs: switch it on, and that dreadful tri-blobbish presentation is gone, switch if off and it's back, on, off, on, off... who said the effect was subtle? Flame away. Would that be...

Equipment used to test the unit; the source was mostly my SME Turntable, through a Bottlehead Tube Phono Preamplifier, this runs into my Eastern Electric MiniMax Preamp and plugged into the Headfive were my Sennheiser HD540 Reference Headphones (600ohm). The Minimax has no Tape output so the...

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Quote: Originally Posted by leonid05 Besides: As for being a "wack job" for spending $100 and more for a pair of tubes, I beg to differ. Just a question of priorities, I`d say. Other people spend two or three times the money for headphone-cables and stuff like that, and I certainly...

Quote: Originally Posted by kramer5150 So... whats so special about these? http://cgi.ebay.com/ws/eBayISAPI.dll...tem=9713900025 ??? Garrett Personally I'd say no tube is worth that sort of money - then again, I'm a total cheapskate

6922 6922-WA CCa CV2492 CV2493 E88CC Are to all intents identical 6DJ8 ECC88 ECC868 CV5358 6N23P Are very close substitutes & will slot in with no problem plus there are a few other you can throw in the mix, like the PCC88....

Quote: Originally Posted by Patu There was no microphonics with my JAN Philips. leonid05: gundam91 was kind enough to tell me much about tubes some time ago. He has RP5.1 also and I've followed his instructions while tuberolling with my amp. He also recommended Amperex's to me but...

Sent my payment today - but not bothered about the serial number. Just thought I'd let you know in case you were keeping a tally of those that don't require a number!