1x VintageNOS Mullard Gt Britain 12AX7 ECC83 /GrailClassic RichVocals WarmTone DynamicBass /Blackburn B Code Authentic /LabelsVary

mullard gt britain are luminous legendary true classics, revered for their warm rich polished holographic sound reproduction

the breath of life! 1960s top sonic blackburn production captures incredible vocal fidelity and realistic live-concert playback

these audiophile crown jewels reveal an immersive articulate bass stage depth, and a lush resolving dynamic tonal presentation

the unique metallurgy of vintage mullards feature thick seam-getter mottled flashing, and a special authenticity mark in the base

the premium quality, low noise floor, and intimate warmth, all contribute to the 12ax7 ecc83 mullards collectible lore

1 x authentic vintage seam-top mullard blackburn gt britain (fair to nice silkscreen) + mullard box included

+ undergoes a complimentary refurbish and deoxit process, one of a kind value-added quality control

full mutual conductance gm test, several strong old stock available:

our high power output test applies up to 250v, more than many other testers, simulating a real circuit

+ useful life test pass! (a key longetivity indicator) + plus an impeccable gas / leak / short check

give several sessions or up to 150+ hours w/ your specific amps voltage to settle / break-in

ships well packed worldwide!