These are about the best pics I can get. Halo getter, gold lettering.
Hmmm, ok you have also golden logo Ultron and it looks same as I have but yours is coded 52502. Does it have any factory code @ usual place? The ones Salvatore is sending me are coded 50402. Wierd, because his tubes should be older batch if we consider that number but have white logo and markings.
Unfortunately the factory codes are mostly gone and what is left can barely be made out. I'm listening to my Mullard again, with Bill Evans just to validate that I still can hear what I thought I heard initially with this tube. It is, I believe, the best sounding tube I have. The bass extends just a bit more, with a tad more tightness than the GAC but still with a great mid range presentation. Nothing shrill or unpleasant about this tube at all!!
My T1 finally arrived! This is my first headphone amp. Actually I think I had a corda headsix I bought used off here years ago but I have absolutely no recollection of it. It may never have arrived even. I broke the plastic fences almost immediately. I swear the feet are too big to fit in the holes. Is the vacuum tube supposed to get hot? I touched it and it's almost burning hot. The sound is great, I'm using it at 0db gain with a 12 ohm impedence sony mdr-ma900 so far and it gets really loud. It's nice not to have to run the headphone cord behind my desk to my pc on the floor. The volume knob action is very smooth and feels solid. The aluminum enclosure is probably the nicest looking out of anything I own. The edges are so sharp.
edit: man, it's nice to have some headroom on the volume for once
My ultron's look like http://www.ebay.com/itm/190815371234?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 if you use the firefox addon here, https://addons.mozilla.org/en-us/firefox/addon/ebay-item-description-save-enl/ you can see huge pics of them. In the hi-res picture they look like someone put them together in their room, but they don't look so bad in person. There were no SQ, special quality, labels on any of them. I've listened to them a lot today and the reason I like them I think is that they provide all the detail of my Amperex Orange globe, bugle boy, etc without sounding so warm and in my grado's I can deal with them longer.
Hey guys, when you install the plastic fences, be careful not to crack them. I'm not 100% sure, but I think the big one has to go from the front left to the right back.. the holes are specifically cut that way. so the littler fence has to go from the front right to the back left first. I'm emailing aune to see where the cheapest place to get replacements is.. maybe they'll just send me some.
edit: I'm probably wrong about tall/short fences only going in certain holes. The main thing is to only push the fences downwards into the holes by pressing down on the top of them, DO NOT SQUEEZE them, it doesn't help them go in the holes.
Do any of you guys have a slight hum/buzzing when not playing music? I do have one.. I have a few things I can try to fix it like a different driver, or usb port. maybe move power adapter around or use another 3.5 to 6.3mm adapter.
Does anyone know how much power the T1 outputs at 600 ohm? The stats on ebay says it outputs 150mw at 300ohm, so logic would think that it does 75mw at 600, but from looking at other amp's specsheets, the math doesnt seem to always work out that easily. Are there any official datasheets on this?
Grey shield large halo Ultron here. This seems to be really good tube also for EDM.
I've noticed that new tubes get really hot during the first couple of times you use them.
About the three different Ultron PCC189 tubes. If you look at the lot of ten that MacKajVah bought there are three different boxes. Maybe he can confirm this when he gets them, and also if the tubes inside also differs accordingly. And If he can also compare the sound. Six of then have Special Quality printed on them, Two have PCC189 7ES8 and the last two only PCC189