Introduced in 1963, the legendary 7591a was an improved design w/ better screen dissipation and a low-loss base. warm rich sound reproduction w/ grey plate internals, live-concert holographic sound reproduction w/ vinyl style intimacy.
Item Category: Vintage Electronics
-
Raytheon Realistic Lifetime 7591A Tube, Disc Getter, Tests NOS
Vintage 1960’s Raytheon / Realistic Lifetime 7591A vacuum tube. Disk getter, chrome top. Tests NOS @100%+.
-
⭐USA⭐ GE 7591a 7591 COIN BASE Tube Tested Good on TV-7 Tester 66@36min
TUBE’s TEST RESULT’s TV-7/u Tested! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! ( USA ) .
-
⭐USA⭐ RCA 7591a Tube Tested Good on TV-7 Tester 50@36min
TUBE’s TEST RESULT’s TV-7/u Tested! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! ( USA ) .
-
TWO The Fisher 7591A Tubes / Amplitrex Tested = Good But Not Great / Base Damage
TWO The Fisher 7591A vacuum tubes. Tested on Amplitrex AT-1000 tube tester (fixed bias mode). Tubes test at 6950 and 8070 where 6630 micromhos is pass/fail grade. This is not great matched pair, but two good singles.
-
Strong Pair Sylvania 7591A Power Tubes O Getters Matched Codes Tested TV-7B/U
Both tubes test balanced at 50 with 36 being the minimum score for a good tube (with 65% life remaining).
-
Pair 7591A SYLVANIA labeled for HAMMOND Halo Getter Tubes Amplitrex Test
Both tubes tested and matched on an amplitrex AT1000 tube tester with the following results Tube 1- 64% emissions 70% gm Tube 2- 82% emissions 83% gm
-
⭐USA⭐ TEST NOS RCA 7591a Tube Tested on TV7 U & Sencore Tested at 62@36min
TESTED NOS! TUBE’s TEST RESULT’s TV-7/u Tested! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! ( USA ) .