What's another $90?
23 responses Add your response
You may not notice. However, if the tolerances deviate from the spec by too much, the tube itself may not have come off the line as well built as one closer to spec. That's assuming they're matched to that parameter and not just matched to each other. Even so, I'd go for the better tolerance at this level. My phono tubes are matched to 1% apparently.
@stereo5 ... the VK-33 appears to be the last of the current BAT preamps to use the 6922. The "SE" version uses the 6H30, and I think all other BAT preamps now are using the 6H30. The VK-33 has been discontinued recently, so I got a decent, discounted deal on a BNIB model and have the ability to tube roll.
6n23p-ev is not the same tube as 6n23p, or e88cc/6922, though interchangable it behaves more like an e188cc with less dynamics, due to much lower cathode resistance that will draw too much current in a 6922 circuit, if you want that.
Life expectancy same as 6n23p.
I would use platinum matched in a phono stage and gold in line.
So what's the story with the NOS Rocket Logo 6H23-EB? I'm curious because there tons of varieties of NOS 6922s and compatibles. There have been many articles and threads about the pros and cons on many of them. I've always had good luck with Amperex Bugle Boys (Holland) and I recall a number of folks raving about Tung Sol 7308s and others lusting for warm Mullards....but the 6H23-EB?
Is that guy @EBM involved? If so, "jump on them asap". Cheers,
Voskhods (Rocket logo) made only 6n23p, direct replacement for e88cc6922, and the preferable ones to seek are 1974-1979 period (earlier the better).
The EV version is a different kind of tube, that can stand harder circuit environment, and was made by Reflektor and not so desirable sonically compared to a 6n23p.
I may be wrong but i never came across or seen any Voskhods with the EV designation.
That is my experience with them.
@rushfan71 ... actually it was about $100, and all I wanted to know was whether the tighter tolerances were worth the extra scratch from an audible perspective. I’ve got plenty tied up in cables because I can hear the difference ... I don’t know whether that will hold true with tube tolerances. Nonetheless, I spent the extra dough. I find it fascinating that people in this hobby will spend money blindly on equipment without bothering to understand what, if any, sonic benefit they will derive.