Quick shipment and good packaging, to start off. All of the tubes are exactly as described, date and gm-matched, with small unobtrusive stickers. All had excellent-to-very-good paint marking. All were in original 1958 USN packing boxes, including the age patina on the box, and its natural color. I love this kind of stuff, almost as much to try it out and enjoy it on my electronic gear as I do to just look at it and think of the history of it. I look forward to testing these out on my pre-amp and amplifier (both use 12AU7s) and so far I am *very* happy. Thanks folks!
Verified purchase: Yes
I was expecting a clean, linear performer. The sound was muddy and not clear. The tubes I tried tested out very well, and Conn are supposedly pre-selected for noise and microphonics. Tried them in my system compared to a standard RCA 12au7a. Hardly worth listening to. I was surprised by the lack of clarity and the poor high frequency performance. Instruments did not sound 'real'. At least I know now.......
Verified purchase: Yes
I'm not a valve expert, but I can say that these 12AU7s (together with a set of 12AT7s) have shaken up my XiangSheng 728A pre-amp: toning down the previously rather heavy bass without losing impact or detail, and adding a richer mid to the sound. Having said that, the supplied valves are not too bad either, compared to many Chinese valves, and for cheaper or less bassy speakers than mine would probably by OK.
Verified purchase: Yes
Excellent quality audio tube, swift shipping, performance is as described. Made my favorite preamp for voice over light up. Recommended item and vendor!
Verified purchase: Yes
Verified purchase: Yes
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