Perished foam looks like the end of a pair of speakers and is usually an afternoon and twenty-five dollars. A dead output module on a machine nobody makes parts for looks like a repair and is the end of it. Almost nobody in a garage can tell you which is which.
Two hundred machines, a dated price book, and the honest catch next to every single pick — including the part nobody else writes down, which is whether anyone can still get a part for it in ten years.
Every entry names the machine, tells you what it actually sells for, and then does what no buying guide does — it tells you what happens when it breaks.
Press the surround at the edge of the cone. Perished foam looks like the end of a speaker and is usually an afternoon and twenty-five dollars. It is the single most useful thing to know in a garage, because it is what makes the seller drop the price on a pair that is not actually broken.
The same transformer, the same output stage, the same factory in some cases — and a name people recognise moves the price by hundreds. The brand map prints what each badge actually means in 2026, including the licensing trap, where the name survived and the company did not.
The most expensive vintage receiver you will ever buy is the cheap one that can never be fixed. Five extinction mechanisms ranked by how final they are, the survivors, the donor-machine economy, and how to research a machine's repair path yourself in four searches.
The book costs less than the bench fee on the machine it stops you buying.
See the actual pages before you decide: the cover, the contents, who this is for, the opening of the sixty-second checks, the brand map, the sensitivity chapter and the parts-extinction hall. Free. It is the same file, just shorter.
Read the free sample →“I got a Pioneer TX-7800 receiver (1977) in perfect electronic and cosmetic condition at Goodwill for $15 a couple years ago”
@htautomat · on YouTube“I didn't understand a lot of this, but I wish I'd kept my old Realistic amps now :-)”
@8or9feet-h5k · on YouTube“I've noticed there seems to be two types of audiophiles. The guy who listens to music and the guy who listens to his system.”
@ryhnsmock2409 · on YouTube“What's happened to Dynamic Range since 1990 is a crime against audiophiles. A blatant disrespect.”
@jozefserf · on YouTube“I have a collection of over 900 cds with my favourite music. I still have a pleasure of taking the box and putting a disc on the tray.”
@tyrionlannister9376 · on YouTube“I have about 1500 cd's. The earliest from 1983! Not one has rot.”
@Chuchitabletuh6xj · on YouTubeA download. One PDF, 115 pages, on your screen about a minute after you pay. It reads on a phone, a tablet or a computer, and any page prints on ordinary paper — Part 16 is built to be printed and carried to a viewing.
Part 14 is a dated price book of ranges, not asking prices, and the book says which way each shelf is moving. Ranges move slowly, and a machine that is a bad buy at $400 is still a bad buy at $430.
The parts-extinction hall and the brand map are the parts experienced buyers write back about. If you can already date a receiver by its faceplate, Part 2 will be revision and Parts 4, 8 and 14 will not.
Email and you get your money back, 30 days, no form and no argument. You keep the file.
Refunds. Thirty days. Email and you get your money back, no form and no argument, and you keep the file.
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