the legend is here! another rare exclusive, collectible hifidelity audiophile crown jewel quad, low/used condition
twice gm tested and audio grade phono ready w/ one of a kind seller screening and selection process

4 grail 7308/e188cc tight waist gold pin audio tubes
incredible live concert detail, grail ranked precision and clarity
holographic top to bottom transparency, immense 3d beauty for vocals

supreme ranked preamp upgrade w/ clarity transparency and lush musicality
popular type for systems that require less microphonics than e88cc/6922/cca design!
more harmonic noise control and more rugged long life 10k hour build

an expansive full frequency presentation, popular tuneup for mics amps stereos vocals +
vintage build w/ most precious metallurgy of the tube era = more accurate sound reproduction

full amplification + useful life test 80/80~75/80~73/71~66/72 % gm (65 % good)
our unique gm output test applies 225 vdc simulating actual operations w/ filtered dc + leak short gas check
for parts/experiments/mono apps like mics, lower gain quad

w/ complimentary proprietary value-added full refurb process, one of a kind seller qc!
give 100+ hours w/ your specific amps voltage to settle in (important)
ships worldwide well packed, combined postage available

~authentic vintage hifidelity audio curation by caliacoustics~