IGS Audio - Here's the list of compatible input tubes for the Tubecore 3U fitting in the first socket: 6N1P-EV - stock tube, ECC85, 6AQ8, 6BC8, 6BK7, 6BQ7, 6BZ7, 6DJ8, 6DT8. | Facebook
![6BZ7/6BQ7A/6BS8 GE Medium-Mu Twin Triode Vintage Miniature Vacuum Tube 9-Pin NOS New Old Stock in Box 6BZ7/6BQ7A/6BS8 GE Medium-Mu Twin Triode Vintage Miniature Vacuum Tube 9-Pin NOS New Old Stock in Box](https://www.rfwiz.com/image/catalog/Parts_Equipment/Tubes/6BZ7-Data1.jpg)
6BZ7/6BQ7A/6BS8 GE Medium-Mu Twin Triode Vintage Miniature Vacuum Tube 9-Pin NOS New Old Stock in Box
![Schiit Audio Vali 2 - Tube-Hybrid Amplifier - Official Thread - Official AMP/DAC/DAP Model Discussion - The HEADPHONE Community Schiit Audio Vali 2 - Tube-Hybrid Amplifier - Official Thread - Official AMP/DAC/DAP Model Discussion - The HEADPHONE Community](https://global.discourse-cdn.com/business6/uploads/headphones/original/2X/4/48478f93285dd3ee84dacffcf231bedc54130f47.jpeg)