New Tube Tuesday!

tubular-dudes

#1

New tubes arrived today for my BHC and Loxjie P20…
BHC: 6AS7G JAN Gray Plate RCA, and Electro Harmonix 12AU7
Loxjie P20: I have two sets the ones currently in the amp: 5670/WA 3 MICA BLACK PLATE JAN GE matched and tested pair, up top are the two Russian 6N3P-E Platinum Grade matched pair.


#2

not enough tubes


#3

I concur…I have a bunch more coming in the next couple weeks… :wink:


#4

I miss the days of the local electronics shop with a good tube tester.
The Internet Archive has some great tube manuals. I’ve gone through most of this one

The whole free library is here:

https://archive.org/details/vacuumtubemanuals


#5

What is that beautiful tuber below the p20? God that’s more pleasurable to look at than this hobby should provide.


#6

Cayin Ha-1a MKII tube, and yes it is quite the looker! Sounds good too…but I will say the stock 12AU7 need replacing (should get them in the next couple weeks). I just got it last week…was very excited, and I’m enjoying burning it in!


#7

Do you have a tube tester? A tube tester comes in pretty handy, especially when matching a pair. A reasonable place to buy tubes at fair prices is esrc. Guarantees them to work.
http://www.esrcvacuumtubes.com

I use (one like this) military tube tester TV-7 A/U, built circa 1955. My brother rebuilt it for me from surplus parts.


#8

That is bad ass!!! and it is in briefcase form! I don’t know why but I now need this in my life…
Wife in the background screams “Oh Dear Goodness! What have you done!!!” :wink:


#9

You can find them floating around on ebay. The preferred one of this series is the TV-7 D/U…its a little bit newer and does a better job than the older ones. It also has a an additional testing range. I have a decent tube collection for my three tubed components (2 headphone amps, 1 tube buffer), and am glad I had a tester to check them. Even reputable dealers will send out a bad / marginal tube one once in a while. Sucks a lot of energy though. This one is a little cleaner than mine as far as the case goes. My brother built it from parts from a couple of scrap ones, and beaded the octal and noval sockets to reduce microphonics.


#10

Here’s my actual tester. The case is kind of beat up, but it works good.


#11

This is great. It’s got a real KGB vibe. Love it.


#12

That’s how tech used to be. No hey Alexa, test my 12AX7 and 35W4.

Even my piano tuner used to use a scope and a briefcase of tuning forks. Now its an app.


#13

I’m very interested in getting the P20. If I do, no doubt will do some tube rolling (about which I know relatively little). Question: of the 2 sets of tubes you mention for the P20, do you have a preference? What does each set of aftermarket tubes do right/wrong for the P20? (thanks)


#14

Well to be honest they all have their positives and only change the sound a little bit in one direction or the other…

I think you will be plenty happy with the stock tubes…then when you are ready for a different sound pick up a pair of some other tubes, keep doing that until you find your preferred sound. Right now I would say the Russians and Stock are my current favorite…but I have way better tube amps so I tend to only listen for a couple of songs before switching to one of those.

Edit: I think with more time the GE will be my favorite…but I need to let them burn in a bit, which is hard when having the Cayin and BHC only a plug distance away… :wink:


#15

New tubes came in!




Naked! Tung Sol in the back! 12DTS; middle two are EL84 Electro Harmonix; front two are 12AU7 Cayin branded.

Front 4 will be replaced by the new Tung Sol’s

All in …and I may have messed my pants…in a prepubescent kind of way lol :wink:


#16

Great pictures as always and it must give great ambiance to a darkened room.