Mullard Special Edition 1964 GoldLabel Blackburn GtBritain ECC81 12AT7 NOS Grail

1964 mullard are the top sonic echelon for their rich holographic sound reproduction, 2-year only special gold label limited run. Like a live pub concert in your living room, the true harmonic sound stage of mullard is warm and captures immersive lush fidelity. Revered metallurgy worldwide by audiophiles, legendary for liquid dynamics, sparkley highs, and great rich ambient bass resolve.

Whether playback or production, the vinyl style intimacy is sought after for vocals, instrumental fidelity and percussion depth. Authentic blackburn b4d3 etch code w/ nice gold silkscreen, thick top getter flashing w/ seam top + mullard box included.

Full conductance balance test pristine 110/114 %. (65 % good) + important life test pass. Our life test is a key longetivity indicator, and our unique gm output test. Applies 225 vdc simulating actual circuit load. All tubes are also checked w/ an impeccable gas + leak/short check, and a proprietary complimentary refurb deox process.

Authentic vintage hifidelity audiophile tube curation by caliacoustics. See our official website for reserve/request options! + collectible true-nos sealed box rarities +.