4 Rare FoilEdge DGetter Matsu/Mullard 12AX7 ECC83 NOS HolyGrail Quad +FreePost

The top sonic echelon, limited-runs made on mullard tooling w/ japan hard vacuum. Vintage foil-edge dgetter 12ax7 ecc83 quad. Incredibly rare late'50s production sought after by audiophiles for their high resolution + live-concert intimate rich imaging. The limited-run first foil-tip dgetter captures more detail than any other production w/ phenomenal low-register 3d presence.

The tube-era british supplied expertise + tooling via'transfer of technology' resulted in several critical audiophile advantages. Same anodes, micas, electrode geometry, glass envelope, spot welding, grid wire spacing and cathode processing chemistry!

Take your listening experience to a higher level of dimensional engagement and immersive holographic imaging. These vintage types are coveted for their warm front row live-concert style delineation of instruments vocals and percussion. Tune and transform your sound reproduction across multiple genres w/ more realism and delicate intimacy. Carefully curated direct japan import w/ authentic fragile oe tube boxes +. Full gm conductance test 102/10295/9495/9492/98 %.

Our special gm output test applies real world 225vdc voltages w/ filtered dc, plus an impeccable gas test + leak/short check. Mutual gm conductance scores are the ability to transfer current especially important for push-pull preamps. Also supplier double checked for conductance via supplier tv7 / hickok 539c for unparalleled accuracy. We also pride ourselves on a proprietary complimentary value-added complete refurb screening deox process. Also see our new official site! True-nos sealed-box rarities, and reserve/request options. Ew updated part number list below. Give 100+ session hours w/ your specific amps voltage to fully settle in (break-in is important). Authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics.

Including limited special editions + rare true-nos sealed box + pinched waist. Also high-resolution headphones + premium vocal stage and studio mics.

6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cca. 12ax7 12at7 12au7 12bh7 / ecc83 ecc82 ecc81 e82cc. 6bq5 6au6a 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 gz34.