Tone Report Weekly Issue 102 | Page 28

VINTAGE Tube Screamers There may be no worse “mojo offender” in the used pedal marketplace than the statement “an authentic JRC4558 chip” in regards to a vintage Tube Screamer. Why? Because the Japan Radio Corporation is still making them. In fact, the JRC part is just a manufacturer prefix; there are several “4558” types made by NJM (New Japan Radio), LM (National Semiconductor) and others. The original 4558 in vintage Tube Screamers was actually a Texas Instruments brand (RC4558) with a few variants here and there (TL4558P). However, these are all integrated circuits (ICs), so each 4558 must adhere to a block diagram—or schematic of an array of semiconductors and passive parts—or it’s not a 4558. That said, original Tube Screamers used more or less the exact same parts as are available today, right down to the carbon resistors and cheap green capacitors that cost pennies. It’s time to face facts about Tube Screamers; so many companies make Screamer copies with the above knowledge that originals just aren’t worth upwards of a thousand dollars unless you have some sort of Stevie Ray Vaughan shrine built in your rumpus room. We’ve seen companies like EarthQuaker roll out Screamer war machines like the Palisades, and even Ibanez has a handwired Tube Screamer out there with absolute boutique construction for a third of the price. 28 TONE TALK // Save Your Dough: 5 Most Overpriced Pedals