stark 9-66

eBay

15KY8 Vacuum Tube - Stark 9-66 tested good $1 Dec 22, 2021

eBay

GE 12W6GT Stark 9-66 tested gm=8500 $5 Oct 3, 2022

eBay

Sylvania 5GS7 Vacuum Tube NOS/NIB - Stark 9-66 tested good $2 Jan 26, 2022

eBay

GE 8B10 Vacuum Tube - NOS/NIB - Stark 9-66 tested good $2 Dec 23, 2021

eBay

Admiral 14BR11 Vacuum Tube - NOS/NIB - Stark 9-66 tested strong $1 Dec 23, 2021

eBay

RTT 12W6 / 12L6 Stark 9-66 tested gm=6000 $5 Oct 3, 2022

eBay

Rogers 17AY3 Vacuum Tube  - NOS/NIB - Stark 9-66 tested strong $1 Jan 18, 2022

eBay

Philipps 17CK3 Vacuum Tube  - NOS/NIB - Stark 9-66 tested strong $2 Mar 4, 2022

eBay

RTT 17AY3 Vacuum Tube  - NOS/NIB - Stark 9-66 tested strong $1 Dec 23, 2021

eBay

Westinghouse 19CG3 Vacuum Tube  - NOS/NIB - Stark 9-66 tested strong $1 May 24, 2022

eBay

6EV5 Vacuum Tube - Lightly Used - Stark 9-66 tested gm=4000 $1 Mar 16, 2022

eBay

6BA8A vacuum tube Stark 9-66 tested gm=5300/1700 £1 Dec 23, 2021

eBay

25BQ6GTB Vacuum Tube Rogers, Stark 9-66 tested, gm 4100  £1 Jan 18, 2022

eBay

12L6GT Vacuum Tube - Stark 9-66 tested, Mut Cond 9700 £1 Dec 23, 2021

eBay

Westinghouse 1V2 Vacuum Tube TV HV Rectifier - Stark 9-66 tested good $3 Dec 29, 2021

eBay

Philips 3AV6 Vacuum Tube - NOS/NIB - Stark 9-66 tested strong $2 Dec 23, 2021

eBay

RTT 50C5 Pentode audio output -Stark 9-66 tested gm=7750 $9 Sep 30, 2022

eBay

GE 17AY3 Vacuum Tube  - NOS/NIB - Stark 9-66 tested strong $1 Dec 23, 2021

eBay

RTT 21GY5 Vacuum Tube - NOS/NIB - Stark 9-66 tested gm=8750 $1 Dec 23, 2021

eBay

Hytron 6AH6 Vacuum Tube - NOS/NIB - Stark 9-66 tested gm=4200 $2 Dec 23, 2021

eBay

Westinghouse 1X2B Vintage Vacuum Tube - NOS/NIB - Stark 9-66 tested good $1 Feb 12, 2022

eBay

GE 2FH5 Vacuum Tube - NOS/NIB - Stark 9-66 tested gm=4800 $2 Jan 26, 2022

eBay

Rogers 12EK6 Space Charge Vacuum Tube - NOS/NIB - Stark 9-66 tested good  $1 Jan 18, 2022

eBay

ECH83 / 6DS8 Vacuum Tube - NOS/NIB - Stark 9-66 Tested strong $6 Jan 15, 2022

eBay

GE 6BC5 Vacuum Tube - Stark 9-66 tested gm=2600 NOS/NIB $1 Apr 10, 2022

eBay

Keldon 3EH7 Vacuum Tube - NOS/NIB - Stark 9-66 tested gm=2300 $3 Dec 23, 2021

eBay

Marconi 8BM11 Vacuum Tube - NOS/NIB - Stark 9-66 gm=3700/1550 $2 Jun 9, 2022

eBay

Westinghouse 3B4 Vacuum Tube - NOS/NIB - Stark 9-66 tested gm=1700 $2 Mar 22, 2022

eBay

GE 4DE6 Vacuum Tube - Stark 9-66 tested gm=1650 NOS/NIB $1 Dec 23, 2021

eBay

Sylvania 6AF9 Tube - NOS/NIB Stark 9-66 tested gm=4800/3600 $1 Dec 23, 2021

eBay

Marconi 12CN5 Vacuum Space Charge Tube NOS/NIB - Stark 9-66 tested good $1 Jan 26, 2022

eBay

Rogers 12CN5 Vacuum Space Charge Tube NOS/NIB - Stark 9-66 tested good £1 Jan 18, 2022

eBay

25BQ6GTB Vacuum Tube GE Canada, Stark 9-66 tested, gm 4400  $2 Feb 16, 2022

eBay

Admiral 6CW5 Vacuum Tube  - NOS/NIB - Stark 9-66 tested gm=7500 £2 Feb 16, 2022

eBay

Superior 5GS7 Vacuum Tube NOS/NIB - Stark 9-66 tested gm=3800 £1 Dec 23, 2021

eBay

GE 6JW8/ECF802 Vacuum Tube NOS/NIB - Stark 9-66 tested, good £1 Mar 17, 2022

eBay

GE 2CY5 Vacuum Tube - NOS/NIB - Stark 9-66 tested gm=2300 £1 Dec 23, 2021

eBay

Marconi 12AB5 Vacuum Tube - NOS/NIB - Stark 9-66 tested gm=4900 £3 Dec 23, 2021

eBay

Sylvania 6SN7GTA - Well Balanced @ 2050/1900 - Tested on Stark 9-66 $16 Nov 16, 2025

eBay

GE 19AU4 GTA Vacuum Tube - NOS/NIB - Stark 9-66 tested strong $2 Dec 23, 2021

eBay

Sylvania 3DR3 Vacuum Tube HV Rectifier NOS/NIB - Stark 9-66 tested Good $4 Dec 28, 2021

eBay

EF40 Vacuum Tube Philips Miniwatt - NOS/NIB - Stark 9-66 Tested gm=1700 $9 Jan 26, 2022

eBay

Sylvania 30AE3/PY88 Vacuum Tube NOS/NIB - Stark 9-66 tested good $2 Dec 22, 2021

eBay

Marconi 6CD6GA Vacuum Tube - Stark 9-66 tested, Mut Cond 5750 $1 Dec 23, 2021

eBay

Admiral 3DS3 Vacuum Tube HV Rectifier NOS/NIB - Stark 9-66 tested Good $4 Mar 10, 2023

eBay

Marconi 1L4 Vacuum Tube  - NOS/NIB - Stark 9-66 tested gm=1100 $2 Mar 27, 2022

eBay

Philips 18GB5 Vacuum Tube - NOS/NIB - Stark 9-66 tested gm=3300 $2 Mar 22, 2022

eBay

GE 9LA6 Vacuum Tube - NOS/NIB - Stark 9-66 tested gm=4400 $5 Dec 23, 2021