2x Vintage Matched Sawtooth Mullard GZ34 5AR4 ~ w/ same etch code! F32 B3J3/B3J3 ~ Authentic Blackburn Gt Britain ~ Grail Top '60s Rectifier Tubes ~ Musical Warm Dynamic Liquid Vintage Audio ~ 101/101 % Gm ~ Dynaco Labels
Our users rate Reverb
an audiophile darling! vintage mullard 5ar4 gz34, a best-of classic, and top sonic echelon rectifier tube, made in gt britain
these old school collectibles will only go up in value, revered long life, premium metallurgy + low noise rich playback qualities, and same codes!
legendary liquid holographic sound reproduction! w/ dynamic bass, lush harmonics, and incredible resolving vocal realism
the highs are polished which is great for a variety of '60 - '70s - '80s+ genre types, w/ vinyl style warmth + lots of silky detail
often dubbed as a beer-pub tonality due to the intimate ambience + airy qualities, only found in these old copper sawtooth type
yet alas by the 1970s these unique sound curves had quickly moved on, w/ transistor tech, solid state bass, + semi-conductors
tweak, tune-up + transform sound reproduction, distortion, measured feedback, tonal articulation, warmth, and definition
(rectifiers are one of the best upgrades especially for resolution chasers)
2x mullard gt britain 5ar4 gz34 audiophile rectifier tubes, same code blackburn f32 b3j3/b3j3 etch, for dynaco license back then (a rare example of vintage brand marketing and advertising/licensing (long before ai descriptions), to often fill factory direct orders)
full mutual conductance gm micromhos test + leak/short/gas/life/sound checks, pristine balanced pair: 101/101 ~ 101/101 % gm (65)
our high power output test measures the entire linear curve (eg-ip) + applies up to 250v, all w/ filtered dc, simulating circuits
+ also undergoes a proprietary refurbish and complimentary deoxit process ~ a one of a kind value-added quality control
give several sessions (up to 150+ lifetime hours) w/ your specific amps voltage, to fully cure + break-in
ships well packed worldwide! priority/express by request
~ authentic vintage hifidelity audiophile power / preamp / rectifier / mic tube curation ~
This item is sold As-Described
This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.
| Listed | 6 months ago |
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| Condition | Excellent (Used) Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more |
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