Kt 90 tube
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Product
Site
Price
Listed
eBay
Graaf GM 50B, High-End KT90 Tube Amplifier, incl. Original Packaging and FB
$2,826
Jan 30, 2026
$2,826
Jan 30, 2026
eBay
Brand New In Box Current Tested Electro-Harmonix KT90 Vacuum Tube
$87
Dec 16, 2021
$87
Dec 16, 2021
eBay
Electro Harmonix KT90 Power Vacuum Tube
$81
Feb 23, 2024
$81
Feb 23, 2024
eBay
Pair of Electro Harmonix KT90 Power Vacuum Tube
$163
Feb 22, 2024
$163
Feb 22, 2024
eBay
Vacuum Tube - KT90, Electro-Harmonix, Matched Quad
$395
Oct 8, 2025
$395
Oct 8, 2025
eBay
KT90, Electro-Harmonix Vacuum Tube, Matched Pair, Power
$155
Sep 23, 2024
$155
Sep 23, 2024
eBay
KT90, Electro-Harmonix Vacuum Tube, Matched Quad, Power
$311
Sep 27, 2025
$311
Sep 27, 2025
eBay
KT90EH Vacuum Tube Electron Tube (for Electro-Harmonix) Replacing KT88 os67
$98
Jun 20, 2023
$98
Jun 20, 2023
eBay
KT90EH Vacuum Tube Electron Tube (for Electro-Harmonix) Replacing KT88 ot25
$104
Mar 22, 2025
$104
Mar 22, 2025
eBay
KT90EH Vacuum Tube Electron Tube (for Electro-Harmonix) Replacing KT88 ot25
$98
Dec 27, 2023
$98
Dec 27, 2023
eBay
Vacuum Tube Electron Tube KT90EH (for Electro-Harmonix) Replacing KT88 f/Audio
$98
Jan 20, 2023
$98
Jan 20, 2023
eBay
Vacuum Tube Electron Tube KT90EH (for Electro-Harmonix) Replacing KT88 f/Audio
$108
Feb 10, 2026
$108
Feb 10, 2026
eBay
KT90 EI Yugoslavia White Tube Boxes Four Pcs (4 pcs)
$24
Dec 16, 2021
$24
Dec 16, 2021
eBay
2pcs matched NEW Audio Vacuum Tube Russia EH KT90 Electro Harmonix KT90EH
$192
Apr 5, 2024
$192
Apr 5, 2024