1x NOS BadBoy Sylvania FoilD 1950s BlackPlate 6SN7GT ~ Grail VT231 5692 +AmplitrexDigitalTested ~ Presence Dynamics Treble Bass Open Tone
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the top sonic echelon, sylvania usa has a long tenured history of incredible sound reproduction, revered by audiophiles
reknowned data sheets, high build quality, and impeccable test processes, all w/ premium tube-era warm precious metallurgy
these sonic stunner limited run 1951-1953 t-plates are prized for their exceptional performance + collectible bad boy editions
w/ excellent frequency response, sound stage presence, and dynamics, vintage sylvania are some of our favorite 6sn7 ever made
the legendary black plate carbide coating radiates and reduces plate heat temps, plus enhances tonal + breakup characteristics
often described as 1940s vt231 on steroids, while still retaining finesse and refined qualities, w/ better treble and rock solid bass
the sought after bottom foil getter captures low-register fidelity, while mids are warm and lovely, and highs are extended
1 x old stock black plate bottom getter 6sn7 bad boy edition sylvania usa 6sn7gt, branded or plain box included
full mutual conductance/leak/short/gas test, amplitrex at1000 digital w/ fixed bias, see photos
+ undergoes a complimentary refurbish and deoxit process ~ one of a kind value-added quality control
give several sessions or up to 150+ hours w/ your specific amps voltage to fully cure / break-in
ships well packed worldwide
This item is sold As-Described
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