NOS tubes


I have a Rogue RP-1. The previous owner sent a set of NOS(?) tubes with the stock tubes. The boxes these tubes came in are labeled like this:

JAN 12AU7

AF 30(635)4462

Date Packed FEB 1959

Philco Corp. Phila., Penna

What does all that mean (I think the JAN stands for Joint Army Navy, but what does that mean)

Are these installing and trying?

 

Thanks Ron G.

 

 

thegreenline

@buellrider97 yeah GFR kicks ass. 
@lewm  I tried NOS JAN in RP1 and they were nothing special. 

I have very fond memories of that preamp. My buddy still owns his and it sounds great. He just re-tubed it with GLs. 
 

I get it you don’t like that tube, but 

Locorice is this nasty tasting thing most popular in twizzlers but exists as hard candy as well.

Because I hate it and fennel seeds kind of have the same flavor and smell, I can’t stand anything that contains fennel seeds in cooking. 🤮 

Point I was trying to make is that it’s a personal preference.

As a matter of fact I just concluded after experimenting with a tube phono stage that tubes are just not for me. I love the sound when all star align but overall no thanks. The feed my audiophile nervosa, plant the seed of doubt in my mind every time something sounds off, and require way too much maintenance, time and funds with basically no ROI. Property designed modern high end solid state components have consistently good performance without the headache. Just my perspective of course. I know you love tubes  

 

@audphile1 , there’s been a miscommunication, I’ve never tried the GL , and I appreciate your opinion as I have very little experience with new production 9 pin tubes. Rogue provided the low mu equivalent for my M-180 Dark upgrade. It was the new production gold pin Tungsol 5751. I spent $318 at Brent Jesse for curve trace matched Tekefunken 12AX’s and the Tungsols at $40 Ea were better. I need a phono stage for my Rogue Hera, so I just saved them. Any info on new production input tubes I’m very interested. FWIW, I asked Nick at Rogue about a RP-1 Dark and he said no but send it in and we’ll do some mods. I have not followed up yet as I still use it. BTW I hate black licorice and liver. 😆 Later Tater ! 

@buellrider97 no I understood you just fine. 
by the way I was running GLs in AX and AU sockets of rogue ST100 and they were great there. Give them a try in the amp too.