![B-549 SHUGUANG 12AT7 Vacuum Tube Instead of 12AT7 Tube for HIFI Audio Valve Tube Amplifier Kit DIY Factory Test and Matched - AliExpress B-549 SHUGUANG 12AT7 Vacuum Tube Instead of 12AT7 Tube for HIFI Audio Valve Tube Amplifier Kit DIY Factory Test and Matched - AliExpress](https://img.alicdn.com/imgextra/i4/2212270201240/O1CN01vEgk9n1L1xoQRXerr_!!2212270201240.jpg_640x640q90.jpg)
B-549 SHUGUANG 12AT7 Vacuum Tube Instead of 12AT7 Tube for HIFI Audio Valve Tube Amplifier Kit DIY Factory Test and Matched - AliExpress
![AUDIO VALVES: ECC81, 12AT7, A2900, B152, B309, B739, CV455, CV4024, CV – Tagged "mullard" – MULLARD MAGIC AUDIO VALVES: ECC81, 12AT7, A2900, B152, B309, B739, CV455, CV4024, CV – Tagged "mullard" – MULLARD MAGIC](https://cdn.shopify.com/s/files/1/0885/5784/collections/0001203_ecc8112at7-a2900-b152-b309-b739-cv455-cv4024-cv6091-e2157-e811cc-ecc801s-6060-6201-twin-triode-valve.jpg?v=1484847379)
AUDIO VALVES: ECC81, 12AT7, A2900, B152, B309, B739, CV455, CV4024, CV – Tagged "mullard" – MULLARD MAGIC
![12AT7 Browning Laboratories Indirectly Heated Twin Triode Amplifier ECC81 9-pin Vintage Miniature Vacuum Tube ECC81 NOS New Old Stock 12AT7 Browning Laboratories Indirectly Heated Twin Triode Amplifier ECC81 9-pin Vintage Miniature Vacuum Tube ECC81 NOS New Old Stock](https://www.rfwiz.com/image/catalog/Parts_Equipment/Tubes/12AT7-Data2.jpg)
12AT7 Browning Laboratories Indirectly Heated Twin Triode Amplifier ECC81 9-pin Vintage Miniature Vacuum Tube ECC81 NOS New Old Stock
![12AT7 Browning Laboratories Indirectly Heated Twin Triode Amplifier ECC81 9-pin Vintage Miniature Vacuum Tube ECC81 NOS New Old Stock 12AT7 Browning Laboratories Indirectly Heated Twin Triode Amplifier ECC81 9-pin Vintage Miniature Vacuum Tube ECC81 NOS New Old Stock](https://www.rfwiz.com/image/catalog/Parts_Equipment/Tubes/12AT7-Data1.jpg)
12AT7 Browning Laboratories Indirectly Heated Twin Triode Amplifier ECC81 9-pin Vintage Miniature Vacuum Tube ECC81 NOS New Old Stock
![12AU7 Browning Laboratories Twin Triode Amplifier ECC82 9-pin Vintage Miniature Vacuum Tube ECC82 NOS New Old Stock 12AU7 Browning Laboratories Twin Triode Amplifier ECC82 9-pin Vintage Miniature Vacuum Tube ECC82 NOS New Old Stock](https://www.rfwiz.com/image/catalog/Parts_Equipment/Tubes/12AU7-Data2.jpg)