2 x NOS DGetter Amperex USA 6922 Gold Pin ~ Several Grail Pairs In Stock ~ Instrument Grade Holographic Tone Detailed Euphony Rich Warmth Clear Resolve ~ PQ/RCA/Beckman Medical/USN Military Grade ~ Rode K2 NTK Mics Vocals+

vintage amperex usa dgetter editions are the top sonic echelon breath of life! clarity kings w/ incredible tonal resolution

these 1959/1960 editions feature the most precious tube-era metallurgy, mid-band euphony, and sparkley highs

the truly holographic sound reproduction reveals an expansive broad sound stage, w/ legendary full-frequency transparency

the euphoric bass stage picks up the slightest nuances, quite intimate warm and cozy, w/ a bit more body vs. pinched editions!

immerse yourself in luminous fidelity, vinyl style definition, low noise clear imaging, and long 10k hour life premium 6922

whether its a preamp, hifi stereo, or tube mic, upgrade any 6dj8 circuit w/ one of the highest ranked tonalities ever made!

these collectibles emphasize both even and odd harmonics w/ the miniature revolutionary philips frame grids (see photos)

2 x old stock dgetter amperex usa 6922 special grade selected audiophile editions, w/ amperex boxes

nice silkscreens front and back, w/ authentic usa hicksville etch codes visible

+ complimentary value-added refurb screening and deox process! one of a kind quality control

full mutual conductance gm test, several pristine balanced pairs in stock:

pair 1: 1959 beckman instrument grade, same code 7l4*9k / 7l4*9k: 102/104 101/100 % gm (65 % min good)

pair 2: 1960 beckman instrument grade, same code 7l4*0f / 7l4*0f: 106/108 106/105 % gm (65 % min good)

pair 3: 1960 usn military issue/beckman instrument grade, etch code 7l4*0f / 7l4*0h: 101/100 101/99 % gm (65 % min good)

pair 4: 1960 hp instrument grade/rca selected, same etch code 7l5*oi: 110/108 ~ 111/113% gm (65 % min good)

pair 5: 1960 pq premium quality edition/rca selected, etch code 7l4*0g / 7l4*0f: 118/118 ~ 122/122% gm (65 % min good)

pair 6: 1960 pq premium quality edition, etch code 7l4*0b / 7l4*0g: 84/85 ~ 90/88% gm (65 % min good)

our high power output test applies up to 250v, more than many other testers, and simulating real circuits

+ life test pass (a key longetivity indicator) + an impeccable gas / leak / short check

give several sessions (150+ hours) w/ your specific amps voltage to fully cure / break-in

ships well packed worldwide 

1) holographic sound reproduction (amperex usa / heerlen holland + telefunken/valvo/siemens germany + mullard gt britain)

2) long-listen full frequency w/ pleasant extension (heerlen/usa amperex + siemens germany + mullard gt britain + tesla czech) 

3) natural organic tone w/ flat mid band response (amperex usa + telefunken / siemens / valvo germany + mullard mitcham)

4) precision bass w/ depth and lush sonic resolve (heerlen holland + siemens / valvo germany + ei yugo + tungsram hungary)

5) warm musical dynamic sound reproduction (amperex usa / heerlen + siemens germany + mullard blackburn + bugleboy)

6) clarity w/ layered detail and subtle tone compression (telefunken / lorenz germany + tungsram hungary + tesla czech)