1958 philips amperex heerlen holland are reference grade musical gems you can feel in your fingertips, the breath of life
the high resolution dgetter sound stage provides holographic sound reproduction, and warm lively immersive transparency
the lush 'dutch house' cymbal-style resonant aftertaste is revered by audiophiles w/ a high level of vocal and instrument intimacy
sought after top sonic echelon! legendary rich mid band and sparkely highs, quite incredible live-concert depth
seam-tops w/ most precious metallurgy, authentic⊿ 8d /⊿ 8g heerlen 1958 etch + legitimate amperex boxes included
whether its a preamp, tube mic, stereo, or hifidelity tuner these are sure to upgrade your sound w/ more luminous air
~
full conductance test pristine 125/120~125/127 % gm (65good) + life test pass! (life check = key longetivity indicator)
our gm true output test applies real world 225vdc voltages w/ filtered dc + an impeccable gas test and leak/short check
gm conductance is the ability to transfer current, especially important for push-pull preamps
~
full studio sound audition via high resolution headphones and aira preamps, audio grade
we also pride ourselves on a proprietary complimentary value-added refurb screening deox process
give 100+ session hours w/ your specific amps voltage to settle in (break-in is important)
ships well packed worldwide w/ free postage!
~
authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics
see our official site for reserve and request options + limited run rarities, part list below
including special editions + rare true-nos sealed boxes + pinched tight waist + high-resolution headphones