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The dot on the glass is mine. I tested both sections, wrote down what the meter actually said, and stuck it to the tube before I could talk myself into a rounder number.
1958SIEMENS 12AX7 / ECC83 MC1 CODE SINGLE TUBE
- 12AX7
- ECC83 EQUIVALENT
- TWIN TRIODE
- 9-PIN NOVAL
- 1958 BUILD
- 30 DAY RETURNS
THE SCORE SIEMENS 12AX7 — 1958 SECTION 1 49.9 / 48 SECTION 2 41.0 / 48 SPREAD 18%
Both sections on my meter, no rounding and no averaging. On this scale 48 is a new tube and 32 is where a good one still passes. Section one came in above new. Section two came in well clear of the line and nowhere near its brother.
Section one tests above new. Section two tests like a sixty-eight-year-old tube that worked for a living. Both of those are true, and I\'m not going to lead with only the one that sells.
The 12AX7 is the most-used preamplifier tube ever built, which makes the type itself the least interesting thing on this page. Every guitar amp, every phono stage, every line stage of a certain age wants one, or four. They are not hard to buy. Current production costs twenty dollars and will work fine for a while.
What\'s hard to buy is a German one from 1958 with the factory code still legible on the glass and a meter reading you can check against the label. Siemens tubes of this period have spent six decades being pulled out of gear and put into better gear, which is the only reputation that means anything — a preference expressed with money, over and over, by people who had cheaper options in front of them.
The code etched at the base reads MC1. The build year is 1958. I\'m not going to tell you which plant that points to, because I know what the forums say and I know what I can prove, and those are two different lists.
WHY IT SAYS 49.9
The handwriting on the dot is mine. Everything that comes through here gets tested and gets labeled on the spot — both sections, in marker, before it goes anywhere near a drawer. A number written down six weeks later is a number somebody remembered, not a number somebody read.
It says 49.9 because the meter said 49.9. Fifty would photograph better and not one person on earth could have caught me at it, which is exactly why it doesn\'t say fifty. This whole business runs on you being able to check one small thing I told you and find it true, and a sticker is the cheapest place I\'ll ever get to prove that.
The dot ships on the tube. Peel it off yourself once it\'s yours, if you\'d rather see the glass.
CONDITION, WITHOUT FLATTERY
The printed type marking is gone. This tube carries no silkscreen at all — what it has is the etched code at the base and my dot. If you need a tube whose brand you can read off the glass from across the bench, this is not that tube, and I\'d rather tell you here than in a message after it lands.
Glass intact, pins straight and clean, getter flash across the dome dark and unbroken. The gray crust on the glass beside the plates is old sticker residue — somebody\'s label from decades back, the paper long gone and the glue still there. It\'s cosmetic, it will come off with alcohol and patience, and I\'ve left it alone because removing other men\'s marks isn\'t my job. The photographs are shot from four sides rather than the one flattering angle.
The two sections are 18% apart. That\'s the real headline. In a circuit where one bottle handles left and right, 18% shows up as channel balance, and you\'ll either reach for the knob or put this tube somewhere else. In a circuit where the halves run cascaded, or where one tube serves one channel, it\'s nothing at all. Buy accordingly — and if you aren\'t sure which you\'ve got, send me the model of what you\'re running and I\'ll tell you before you spend the money.
One strong section, one honest one, no printing left, and a dot with the real numbers on it. That\'s the tube. The price already knows all of it.
Return Policy Thirty days. The trial is mine.
A return window looks like a concession to the buyer. It isn\'t one. For thirty days you are auditing whether I described this tube the way it actually is, and that exposure is mine, not yours.
Put it in. Leave it in. Send it back on day twenty-nine because you didn\'t care for it, or because something better turned up, or for a reason you don\'t feel like explaining. Nobody here will ask you for photographs or a case.
If I got it wrong, I pay the freight both directions. If I got it right and it simply wasn\'t for you, I pay it anyway. No one should be out money for telling me the truth about what they heard.
WHY THIS ISN\'T LONGER
Because a long policy is a document written for the one buyer in a hundred, then handed to the other ninety-nine to read.
I stopped writing for that one man. He can be somebody else\'s problem.
Shipping Policy Sixty-eight years still. Then four days in a truck.
This tube has survived every decade since Eisenhower by sitting somewhere dry while nobody bothered it. The most dangerous week of its life is the one it spends in a vehicle with my handwriting on the box.
So it goes out braced, floated, and boxed inside a box, packed by a man who has opened a carton that wasn\'t and still remembers the sound it made. Tracked and insured. It stays mine until it is in your hand — broken or lost in transit is my loss to absorb and my claim to file, not yours to document, chase, or prove to anybody in a call center.
You didn\'t buy a parcel. You agreed to listen to something, and the listening can\'t start until it arrives whole.
Who I Sell To Nothing this old has an owner.
It has a current address. You hold it a while, you try not to be the one who wrecks it, and you hand it on — same as the man with the marker, same as me. The whole arrangement is a relay, and every one of us is a leg of it.
Twice in my life somebody took less money from me than he\'d been offered elsewhere, because he\'d already decided where a thing ought to end up. Neither of them explained himself. It took me years to work out that I\'d been handed a way of doing business along with the merchandise.
So a fair amount of what I have never gets listed. It sits under the bench until the right hands show up, and if that takes a year, it takes a year. Nothing under there is in a hurry.
That doesn\'t make me a curator. I\'m a man with a truck, a tester, and a storage problem, who got lucky about what he ended up caring about.
All I want from you is good faith. Ask me anything. Take your time. Tell me what you\'re running and what it\'s doing that you don\'t like. Nearly everyone clears that bar without ever noticing it was there.
The few who don\'t, I let go quietly. There was never anything here for them.
The Fine Print One page. No clause seven.
No boilerplate. Nothing borrowed from a seller with a legal department. Not one sentence written by somebody whose job would have been to protect me from you.
What\'s above is the entire agreement. No asterisk, no exception buried at the bottom, nothing that quietly becomes something else the moment money changes hands.
Short contracts are what two people write when they both intend to keep them.
About Me For thirty years I was paid to make other people\'s things sound true. These ones don\'t need the help.
That work paid better and asked less. This is the first job I\'ve had that I can describe to a stranger without first working out how to describe it.
Which is not the same as being good at it. I overpay at estate sales. I miss things in bins I\'ve already gone through twice. I have sold two items I should have kept and thought about both of them for a year.
I buy from estates, from widows, from sons standing in a storage unit deciding what forty years of their father is worth. What I get I test, I sort, and I otherwise leave alone. Then I go find the next set of hands.
Every message gets answered by me, personally, at more length than you asked for. If you\'re hunting something specific — or you don\'t know what you\'re hunting and would rather talk to a person than read another forum thread — write to me. Tell me what you\'re hearing, not what you\'ve read.
In 1958 a man paid for this out of a week\'s wages and expected it to work, and it did, for longer than anybody had a right to ask. Men like that kept the boxes. They labeled the drawers. They put a thing back where it went, every time, for forty years.
Then they die, and somebody who doesn\'t know what any of it is has to stand in a cellar and decide what all of it is worth. That\'s where I come in, and it\'s the part of this work I\'ve stopped apologizing for. Everything I sell outlived whoever cared about it most. What\'s left to decide is the dumpster or the bench.
This one goes into a preamp or it doesn\'t go.
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