Description

another rare audiophile classic! reference grade highly regarded suresnes france preamp audio tube, the top sonic echelon the crown jewel of any collection, rich romantic lush imaging w/ one of a kind high resolution clear detailed holographics old stock ediswan 6dj8 ecc88 by rt france w/ very early philips tooling and engineering technology, pristine nos spec hard to find 1958 w/ special frame grid internals that will outperform most 6dj8 ecc88 without the dreaded island effect! 6dj8 ecc88 are a popular tuning choice in preamps mics stereos and highlight a variety of genres w/ gorgeous mid bloom old production '50s tubes have the most precious tube-era metallurgy warmth and resolving tone quality 1 x old stock ediswan 6dj8 ecc88 by rt france w/ very early philips tooling, branded box included all tubes are twice tested for mutual gm, and audio circuit auditioned (phono grade + mic certified) full mutual conductance gm test, pristine balance nos: 118 / 120 % gm (65 % min good) + life test pass (longetivity indicator) + impeccable gas test + leak / short check + complimentary refurbish and deoxit process ~ one of a kind value-added quality control always give 150+session hours to fully cure at your amps voltage (break-in is important) ships fast well packed worldwide w/ free economy postage! ~ authentic vintage hifidelity audiophile / preamp / mic / power tube curation by caliacoustics ~ see our official site! limited editions, sealed-box true-nos rarities, and special edition collectibles