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New In Box. Purchased from and tested by Upscale Audio. See box label for spec. Perfect upgrade from the stock tube on some Schiit Vali headphone amps and other brands. I have moved on to other tubes sizes and must thin the herd. FREE SHIPPING VIA USPS TO ANY USA RESIDENTIAL ADDRESS WITHIN THE CONTINENTAL USA.
At US$30, this Electro-Harmonix 6922EH listing is a strong bargain for a single tube, sitting well below the typical new retail range of US$25–US$37 and far under the broader market spread of US$55–US$220 seen for premium or quad packs. Even accounting for used depreciation, US$30 is near the bottom of the new price floor, making it an excellent value if the tube is functional, especially since the listing notes “unknown” condition rather than damage or failure.
The 6922EH (also marked 7DJ8/6DJ8) is a high-quality, gold-pin preamp twin triode widely respected in hi-fi and studio gear for its low noise, tight bass, and smooth high-end, equivalent to the ECC88/E88CC. As a modern production tube from Electro-Harmonix, it offers reliable performance without the age concerns of NOS variants, and at US$30 it’s a smart buy for anyone upgrading or replacing a 6922/6DJ8 slot—just confirm it powers up and holds bias if possible.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Electro-Harmonix, founded in 1968 by Mike Matthews in New York City, emerged from the psychedelic rock era with a modest $1,000 investment. Matthews, a former IBM employee with a passion for guitar effects, debuted the LPB-1 Linear Power Booster at that year's NAMM Show, kickstarting a legacy of innovation. Building on his earlier Foxey Lady fuzz sold to Guild Guitars, the company quickly pioneered affordable pedals that shaped electric guitar tones during the late 1960s and 1970s.
The brand focuses exclusively on effects pedals for electric guitar and bass, eschewing traditional hi-fi categories like amplifiers, speakers, turntables, DACs, headphones, or cables. Iconic models such as the Big Muff Pi fuzz, Small Stone phaser, Electric Mistress flanger, and Deluxe Memory Man delay defined its output, with reissues maintaining relevance today. After a hiatus producing vacuum tubes in Russia under Sovtek, Electro-Harmonix revived its core pedal lineup in the 1990s.
Electro-Harmonix holds a niche, mid-tier position in the guitar effects market, revered by musicians and collectors for its vintage-inspired, high-value stompboxes rather than high-end audiophile gear. Pedals like the Big Muff remain staples for artists from Jimi Hendrix to modern players, blending accessibility with tonal influence that punches above its price point.
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