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03/16/26 at 17:16:14

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6922 Tubes (Read 20 times)

Alan Arkin

Senior Member

Posts: 63

6922 Tubes
Today at 15:20:19

Happy Monday!

In the never ending stream of upgrades, I am now thinking about rolling the input tubes in my Rachael. I started with some military spec 6N1P-EVs and then moved on to some 6922s initially to extract some more gain out of the amp.

I am now thinking about upgrading the 6922s to some Amperex 6922/7308s -- probably Bugle Boys or Orange Globes -- or maybe some Mullard E88CCs. I don't really want to add any brightness to the system, I probably add a little bit more warmth as I think that the switch of my step up to the Cinemag 1254s added detail but maybe less warmth.

Thanks!

Alan

SE34i.5 (2nd Anniv. Mods); Aric Custom S6N7 Line Stage; Rega Planar 6 (Apheta 3 Cart. and Groovetracer Subplatter and Counterweight); Darlington Labs MP-8B; Ned Clayton Cinemag 1254 SUT; Omega SAHO XRS; 2 Rel T/5x; Gaia III; 3" Maple Isolation Platform

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CAJames

Seasoned Member

"I've run every
red light on memory
lane."

Posts: 3142

Re: 6922 Tubes
Reply #1 - Today at 15:50:52

If you're looking for "warm" in my opinion you should look a Mullard. The conventional wisdom is UK tubes lean somewhat warmer than others. I don't have a Racheal but in my UFO25s I like the PCC88s better than 6922/ECC88s. And the Mullard PCC88s have a bit of warmth without sacrificing detail and speed. The Amperex 7308s are fabulous, but in my experience more neutral and transparent rather than warm.

Of course there is synergy between the input tubes, power tubes and rectifier. So a lot of times changing more than just one position will affect the sound in a way that is greater than the sum of the parts.

[Volumio | Jay's CDT2 MRK3] -> Denafrips Terminator 2 + Gaia
Sumiko Pearwood -> Mapleknoll Athena -> Luxman SUT -> Mapletree Phono 3E
STR-1002 -> Woo WA22 -> 2x UFO25s, balanced monos
Omega SAM , Hifiman Arya, Audeze LCD-XC

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JHC

Seasoned Member

Posts: 111

Re: 6922 Tubes
Reply #2 - Today at 16:59:52

I have some medical grade Amperex 6922 tubes that I procured from Brent Jessee and I really like them, although I would not say they are super warm. I also picked up some Voskhod Rocket Silver Sheild 6N23Ps on ebay for a fraction of the cost. To my ears, they are very, very close. The Rockets are not quiet as smooth, but if you can find some, they are worth checking out, especially for the price. To my ears and in my system, at least.

LNBH > Pine Tree Audio Conditioner > Sumiko Starling > VPI Signature Classic > Aric Audio Super MC/MM | Cambridge MX10 > Pine Tree Audio 67+ > SE84UFO + DGR Jr. > Omega Super 8 HO XRS
Music: F♯A♯∞, Life Metal, Nirvana Unplugged, Timewave Zero, Nebraska

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