  
This tube was used a lot from the late 1980s and is a great guitar amp tube. Reputedly made using Mullard or MOV equipment. Clean, rich tone, lots of headroom and nice sense of space and air around notes. Fairly high gain, good for modern amps. Low noise floor good for critical high gain applications.
These tubes are exact replacements for 12AX7, 7025 and ECC83 and will work in any amp, vintage or current manufacturer including: Fender, Gibson, Marshall, Torres Engineering, Vox, Alamo, Kalamazoo, HiWatt, Orange, Silvertone, Supro, Sound City, Matt, Traynor, Carvin, Silvertone, Bogen, Gretsch, Harmony, Valco, Wards, Airline, Kay, Krank, B-52, Ibanez, Epiphone, Crate, Ampeg, Danelectro, Peavey, Washburn, Sovtek, EH, Matchless, Mesa Boogie, Soldano, Park, Sundown, Rivera, Acoustic, Bogner, Sunn, Kitty Hawk, Laney,Top Hat, Trainwreck, Yamaha, Groove Tubes, MusicMan, Garnet, Selmer, Aims, Standel, Magnatone, Masco, Premier, Univox, Valco, Sho-Bud, Watkins, Tiesco, Dynacord, Johnson - and lots more!
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