siemens tubes are reference grade crown jewels, quite musical, warm and involving, w/ high resolution sound reproduction

these rare 1960 early production are the top sonic echelon in the 6dj8 ecc88 family, w/ no island effect like later builds

also less sibilant than bugle boys, these feature more depth + bite which are often compared to telefunkens smooth compression

from the crash of the cymbal to the kick of a drum, these hard to find frame grid types increase tonal fidelity for many genres

the crimped getter neck delivers holographic uncolored tone transparency w/ incredible bass and full-register extension

the highs are pin-point accurate w/ a luminous resolve that is sparkley and adds presence w/ dimensionality

known for their mid band, the rare 1960 editions feature the most precious metallurgy and quality of the tube era

selected for broadcast, cbs editions were screened for their low noise and tight triode balance, quite collectible

a top ranked lowest distortion must listen lively upgrade for stereos, preamps, tube mics and hifidelity apps

same code ga1#0a munich authentic quad w/ siemens boxes included, twice tested audio grade circuit auditioned