1) holographic warm sound reproduction (leading brands: telefunken + siemens germany)
2) pleasant long-listen full frequency extension (leading brands: siemens germany + mullard gt britain)
3) natural tone w/ flat response mid-range (leading brands: telefunken + valvo + siemens germany)
4) precision bass w/ depth and resolve (leading brands: siemens + valvo germany + amperex heerlen)
5) musical linear sound reproduction (leading brands: amperex heerlen + siemens germany + mullard gt britain)
6) pure clarity w/ layered detail compression (leading brands: telefunken + lorenz germany)
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illuminate your sound system w/ an audiophile collectible crown jewel! truly the breath of life, the pinnacle of sound
e188cc 7308 are regarded as more vivid w/ better bass than e88cc or even cca, a wider sound stage preferred by audiophiles
professionally ranked as one of the lowest distortion tubes ever made, full frequency pure clarity king w/ pin-point accuracy
e188cc 7308 also have less noise due to their rugged internals and less vibration prone to microphonics or low level tinitis
see our attached hard to find spec sheets and see the incredible curve reach for yourself! collectible 1960s production
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often compared to telefunken, siemens have less compression and more depth resolution w/ phenomenal mid-band images
the top end is sparkley w/ no roll off and a nice sense of air, and the smooth mid range provides reference grade holographics
involving lower-mids are wetter than all other siemens providing a lush luminous finish, important for vocals and instruments
a balanced uncolored harmonic sound stage... this minimal tone mascara equates to musical transparent sound reproduction
the ruler-flat linear response is sought after for good reason! no comparison to later more common silver shield production
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carefully curated selected and screened authentic w/ siemens box, plus twice tested for accuracy!
add fidelity to your preamp stereo or mic today, try in the position / application that sounds best to you
for a reference grade timeless classic look no further than authentic siemens e188cc 7308 gold pin
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full conductance test 101/103% mutual gm (65 % good) + useful life test pass (important longetivity indicator)
our unique dynamic output mutual gm test applies 225 vdc simulating actual operations w/ filtered dc + leak short gas check
mutual gm conductance scores relate to current transfer ability, especially important for push pull preamps
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we pride ourselves on a proprietary complimentary value-added complete refurb screening deox process, plus free postage!
full studio sound audition process w/ high resolution closed back monitors, phono grade mic ready
give 100+ session hours w/ your specific amps voltage to fully cure (break-in is important w/ vintage tubes)
ships worldwide well packed, several in stock
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authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics
also see our official site! reserve/request options and new part number list below
including limited special editions + rare true-nos sealed box + pinched waist
also high-resolution headphones + premium vocal stage and studio mics
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6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cca
12ax7 12at7 12au7 12bh7 / ecc83 ecc82 ecc81 e82cc
6bq5 6au6 6267 6ca7 6ca4 6aq5 / 6v6 6l6 6sl7 6sn7 5y3 5u4 5ar4
5814 5751 5965 6189 6201 7062 7189 / cv2492 cv4004 cv455 cv4085
el34 el84 ef86 ef94 ez81 ecc85 e180cc e80cf gz34