Episode 1 – The RIAA dive

2025-01-15T00:00:00.000Z

SCENE: UNCLE SEA'S GARAGE. THE SIZZLE OF PORK. A FAINT HUM OF ELECTRONICS WARMING UP.

UNCLE SEA: Smell that? Discount pork, ninety-nine cents a pound. Soy sauce, garlic, high heat. You cannot tell the difference from organic.

FIDOMAN: I can always tell.

UNCLE SEA: No you can't.

FIDOMAN: (pause) ...I can always tell.

UNCLE SEA: Just sit down. Sandwiches in five minutes. Come look at this first.

FIDOMAN: Is that — is that your dad's schematic?

UNCLE SEA: The original. 1978. Graph paper, pencil, coffee stains and all. I laid it out on a board last weekend.

*SOUND: CHAIR SCRAPING. LEATHER CREAKING AS FIDOMAN LEANS IN.

FIDOMAN: (quietly) JFET differential pair on the input. Discrete. No op-amps.

UNCLE SEA: Three dollars in parts back then. Cost me nothing now — pulled the JFETs from dead VCRs at the recycling center.

FIDOMAN: Where are the coupling caps?

UNCLE SEA: There aren't any. Direct coupled. Dad hated capacitors in the signal path. Said they "forgot the music."

FIDOMAN: (laughing softly) Your dad was ahead of his time.

UNCLE SEA: Or too cheap to buy capacitors. Same result. Hit play.

*SOUND: NEEDLE DROP. VINYL CRACKLE. THEN MUSIC — SOMETHING WARM, ACOUSTIC, SPACIOUS.

FIDOMAN: (long pause) ...SEA.

UNCLE SEA: Yeah.

FIDOMAN: Listen to that noise floor. That's not VCR-grade silence. That's — where is the noise?

UNCLE SEA: That's what I'm saying. The JFETs self-bias right at the sweet spot. Dad must have spent weeks matching them.

FIDOMAN: Or he got lucky and never told anyone.

UNCLE SEA: Also possible.

*SOUND: PORK SIZZLING LOUDLY. UNCLE SEA FLIPS IT.

UNCLE SEA: But look at the headroom, Fido. Look where he set the drain current.

FIDOMAN: Right at the edge of saturation. But still linear. (his voice shifts, slower, dreamier) If I took this topology... matched JFETs from a boutique fab, tighter Vgs tolerance, maybe a cascode on top for bandwidth... you could build a phono stage with — I don't know — 120, 125 dB dynamic range. No capacitors. No feedback loops eating the transients. Pure analog velocity.

UNCLE SEA: And how much would that cost?

FIDOMAN: I don't care about cost.

UNCLE SEA: I know you don't. That's why I'm asking.

FIDOMAN: (ignoring him) Imagine a preamp that doesn't just amplify the groove. It amplifies the air. The space around the microphone. You'd hear the engineer breathing.

UNCLE SEA: You'd hear your wallet breathing too. Gasping, more like. Matched JFETs from a boutique fab — that's sixty bucks a pair minimum. You need four pairs. Plus the board, the power supply, the case —

FIDOMAN: I wouldn't need an expensive case. I'd build it open-frame. Let it breathe.

UNCLE SEA: Let the dust in, more like.

*SOUND: STOVE CLICKS OFF. TONGS CLATTER ON A PLATE.

UNCLE SEA: Sandwiches. Move the meters.

*SOUND: PORK SLICING, BREAD TEARING, PLATES CLINKING.

FIDOMAN: (chewing) This pork is tough.

UNCLE SEA: It's economical. Chew longer. What were you saying about the headroom?

FIDOMAN: If I lay out a custom PCB — minimize the loop area, star grounding, keep the input traces under two millimeters — I could drop the noise another 3 dB. Maybe 4.

UNCLE SEA: Four dB below what is already silence.

FIDOMAN: It's not silence. It's almost silence. There's a difference.

UNCLE SEA: (chewing) Name one person who can hear that difference.

FIDOMAN: Me.

UNCLE SEA: (long pause) ...Fair enough.

FIDOMAN: I'm serious. I'm going to sketch this tonight. Take your dad's input stage and refine it. Push it as far as it'll go.

UNCLE SEA: You do that. And while you're spending forty hours on a PCB layout for a preamp that sounds identical to my VCR-parts special, I'll be right here, eating discount pork and listening to records.

FIDOMAN: On my amp, you'd hear the pork sizzling on the recording.

UNCLE SEA: On my amp, I hear it in real life. Cheaper that way.

*SOUND: A COMFORTABLE PAUSE. JUST VINYL, AND CHEWING.

FIDOMAN: (quietly) Your dad really drew this in '78?

UNCLE SEA: Month after I was born, actually. He told me he built it at 2 AM because I wouldn't stop crying and he needed something to do with his hands.

FIDOMAN: And it still works.

UNCLE SEA: Better than most things built yesterday.

*SOUND: ANOTHER TRACK STARTS ON THE TURNTABLE. THEY LISTEN FOR A MOMENT.

FIDOMAN: Four dB, SEA.

UNCLE SEA: Go sketch, you lunatic.

FIDO MAN: (standing) Save me a sandwich.

UNCLE SEA: There won't be any left.

FIDOMAN: There never is.

*SOUND: DOOR OPENING. FOOTSTEPS ON CONCRETE. THEN JUST THE MUSIC, AND THE FAINT SIZZLE OF COOLING FAT.

END.

The Spectral Realm · Fido Audio

Episode 1 – The RIAA dive