![6021 Sylvania Medium Mu Twin Triode Tube. Designed for use as an amplifier in high and UHF circuits. New old stock. No longer available for export. MFR: Sylvania. SKU: 6021. 6021 Sylvania Medium Mu Twin Triode Tube. Designed for use as an amplifier in high and UHF circuits. New old stock. No longer available for export. MFR: Sylvania. SKU: 6021.](https://media.rfparts.com/media/catalog/product/cache/1/small_image/438x438/9df78eab33525d08d6e5fb8d27136e95/6/0/6021.jpg)
6021 Sylvania Medium Mu Twin Triode Tube. Designed for use as an amplifier in high and UHF circuits. New old stock. No longer available for export. MFR: Sylvania. SKU: 6021.
![6021 Sylvania Medium Mu Twin Triode Tube. Designed for use as an amplifier in high and UHF circuits. New old stock. No longer available for export. MFR: Sylvania. SKU: 6021. 6021 Sylvania Medium Mu Twin Triode Tube. Designed for use as an amplifier in high and UHF circuits. New old stock. No longer available for export. MFR: Sylvania. SKU: 6021.](https://media.rfparts.com/media/catalog/product/6/0/6021.jpg)
6021 Sylvania Medium Mu Twin Triode Tube. Designed for use as an amplifier in high and UHF circuits. New old stock. No longer available for export. MFR: Sylvania. SKU: 6021.
![Subminiature Tubes (6111, 6021) on 9-Pin socket (6DJ8, ECC88, 6922 etc) « FET Audio | Hi-End Audio & Electronics Subminiature Tubes (6111, 6021) on 9-Pin socket (6DJ8, ECC88, 6922 etc) « FET Audio | Hi-End Audio & Electronics](http://www.fetaudio.com/wp-content/uploads/2011/01/DSC_7886s.jpg)
Subminiature Tubes (6111, 6021) on 9-Pin socket (6DJ8, ECC88, 6922 etc) « FET Audio | Hi-End Audio & Electronics
![ECC83 12AX7 ECC82 12AU7 ECC81 12AT7 7025 CV4003 CV4004 5751 5814 6021 a 6N2 6N6 6DJ8 adattatore per presa di conversione amplificatore per tubo a vuoto - AliExpress ECC83 12AX7 ECC82 12AU7 ECC81 12AT7 7025 CV4003 CV4004 5751 5814 6021 a 6N2 6N6 6DJ8 adattatore per presa di conversione amplificatore per tubo a vuoto - AliExpress](https://ae01.alicdn.com/kf/S0de8d447424f48adb62f87d5f7fa9196L/ECC83-12AX7-ECC82-12AU7-ECC81-12AT7-7025-CV4003-CV4004-5751-5814-6021-a-6N2-6N6-6DJ8.jpg)