The tube was carefully tested on my TV-7D/U at 68-70-70-72/36 min good (55-56=100%). They all sound wonderful on my hifi system. Super rare and hard to find now.
Item Tag: 7591A
-
GE General Electric 7591A Vacuum Tube : Coin Base
GE General Electric 7591A Vacuum Tube. Up for sale is a GE General Electric 7591A Vacuum Tube. Model : 7591A ( Coin Base/O-Getter ). I tested tubes on my TV7B/U tube tester. Test Results : Tube 1 – 47.
-
CMI 7591A Vacuum Tube Tests Good
CMI 7591A Vacuum Tube. Tests good on my Jackson 648S at 97 with line 70 and tops 130. No shorts or leaks detected. USA sales only. No international sales.
-
1 GE 7591 7591A Vacuum Tube Tested NOS Calibrated TV – 7
This tester also is used in conjunction with a variac to maintain test results accuracy and consistency. This tube tested at- 68. Average new tube value – 56. I will always list original photos of actual item you are receiving.
-
Vintage RCA 7591A Vacuum Tube | NOS | Black Plate | Made in USA | Rare Hi-Fi…
This is a premium vintage RCA 7591A power pentode, highly sought after for the legendary Fisher 500C, 800C, and McIntosh amplifiers. Condition: Beautiful New Old Stock (NOS) appearance. Crystal clear glass with a strong mirror-like getter. Design: Features the superior Black Plate construction. Testing: Visual inspection only; sold untested/as-is. This is a high-value piece of audio history. It will be professionally packed, double-boxed, and insured for shipping.
-
ONE NEW RCA 7591A Tubes / Amplitrex Tested STRONG 💪 +100% / Oct 1968
ONE RCA 7591A vacuum tube. Tested on Amplitrex AT-1000 tube tester (fixed bias mode). CE date code = October 1968. +100% plate current test results. Tube 1: 11520 micromhos @ 76.2mA plate current emissions.
-
TWO Amperex 7591A Tubes / Amplitrex Tested Good Pair / 1979 World Globe Logo
TWO Amperex 7591A vacuum tubes. Tested on Amplitrex AT-1000 tube tester (fixed bias mode). Tubes test at 10010 and 10350 where 6630 micromhos is pass/fail grade. Gm matched to within 3.5% difference. No rattle / tight base / no loose parts.
-
RCA 7591A Pre owned vacuum tube
The RCA 7591A vacuum tube is a pre-owned vintage audio component that belongs to the category of vintage electronics. Manufactured by RCA, this vacuum tube is a specific model known for its quality and performance in vintage audio systems. With its unique design and brand heritage, the RCA 7591A tube is sought after by audiophiles and collectors looking to restore or enhance their vintage audio setups with a touch of nostalgia and authenticity.
-
7591 GE (Amperex Label) Amplitrex AT1000 Tested Strong
Tested strong on an amplitrex AT1000 tube tester with 74% emissions and 75% GM
-
1 International 7591A Vacuum Tube – Vintage Beam Power Audio
The 7591A is a beam power pentode tube with octal basing. It was originally developed by Westinghouse and promoted for ultra-linear audio applications. Many audio manufacturers including Eico, Hammond, Heathkit, Hitachi, Fisher, Lowrey and Scott used the 7591A.