Let's talk tubes in general

I was looking for some 6922’s for my incoming LP and bought some on CAM (Canuck Audio Mart):

"strong pairs of tested 1960’s Amperex ECC88 tubes branded for hp (Hewlett-Packard) from the Heerlen Holland factory

Made in Holland

Stamping condition: 80 - 90%

$70.00/matched pair"

I got two matched pairs for$100.00, including shipping.

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hey Mt…I meant 6CG7, the 8 was a typo.

also, just found out my BiL has the Bravo Ocean. any tube recommendations for it?

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No worries, those are the only ones I’m aware of. I know there are many different voltage variants on the CG7, but I don’t of another way of referring it it.

I have a question… say i was restoring some old speakers… and i wanted to put them on a tube amp. How often do i need to change the tubes assuming i will listen everyday for 2-4 hours

you should let the tubes warm up for a few hours if you can.

Welcome! Tubes generally should last several years at that usage level. Once they’ve burned in, just turn the amp on 20-30 minutes before you plan to use it for them to warm up.

I currently have matched pairs of the following tubes that I have used for my Lyr:

6N23P SWGP Silver Shields
Siemens E188CC
Mullard CV4109
Telefunken ECC88

Inbound I have a Auris ha-2 se amp that uses 1 ECC82 (input) & 4 x PL95 (or EL95) for power tubes per the specs:

https://aurisaudio.rs/index.php/13-main-pages/products/headphone-amplifiers/37-ha2-se

My question is can I roll any of the 4 sets of tubs I currently have either as an input tube or a power tube? will there be any issues where I could damage either the tube or amp by doing this? Based upon the pictures the bottom tube adapters look pretty close to the ones I currently have.

Input tubes
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Power tubes
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