Very Rare Amperex Bugle Boy 12AX7 / ECC83 Matched Pair Tubes made in 1958 D-Foil Getter shape, That the D-geter with a metal strip welded on getter ring bar.
..."ETHEREAL CONDUIT TO A HIGHER REALM" ..On the other sonic-side lies the realms of musical-ideals, dream worlds, and the sonic-heavens and havens of different tube-religions. Telefunken ECC801S can be the conduit to outer sonic planes or sonic-astral realm".... Tube Museum.
U.S.NAVY CRC-6SN7-GT 1950'S LOW-NOISE BLACK PLATE PAIR with "D" Getters
