1) holographic sound reproduction (amperex usa + telefunken / siemens germany + mullard gt britain + heerlen holland)
2) long-listen full frequency w/ pleasant extension (heerlen holland + siemens germany + mullard gt britain + tesla czech)
3) natural organic tone w/ flat mid band response (amperex usa + telefunken / siemens / valvo germany + mullard mitcham)
4) precision bass w/ depth and lush sonic resolve (heerlen holland + siemens / valvo germany + ei yugo + tungsram hungary)
5) warm musical dynamic sound reproduction (amperex usa / heerlen + siemens germany + mullard blackburn + bugleboy)
6) clarity w/ layered detail and subtle tone compression (telefunken / lorenz germany + tungsram hungary + tesla czech)
the breath of life, set of old stock siemens cca germany, special selected upgraded e88cc/6922, best versions to ownonly the best-of selection were earmaked for communications federal and german post ultra strict reliability requirements
a very balanced uncolored holographic sound stage w/ minimal tone mascara, plus a phenomenal batch test and burn-in
ruler flat response w/ transparent sound reproduction, revered musical sound stage w/ linear high resolution imaging
the top end is sparkley w/ no roll off and a nice sense of air, and the smooth liquid mid range is what these are known for
precise yet deep bass reminds us that siemens cca are grail ranked as the lowest harmonic distortion ever, pin-point accuracy
the low-mids are warm and involving and lush, a phenomenal luminous sound stage for vocals instruments and percussion
immerse yourself in more dimensionality w/ one of the most legendary tubes ever made, a true audiophile collectible
best of the best, these oldest versions are sought after for good reason! no comparison to later harsh silver shield production
full conductance test pristine balance: 108/109 ~ 116/118 ~ 118/114 % mutual gm (65%) + 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
give 100+ session hours w/ your amps voltage to fully cure (breakin is important)
ships well packed worldwide, and free economy worldwide postage!
~ authentic vintage hifidelity audio curation by caliacoustics ~
see our official site! limited editions, sealed-box true-nos rarities, and more collectibles