![Found these rca 5692 red base tubes in an old oscilloscope . Tested at 75%. I don't have anything to put Them in, yet, but maybe later down the road I will. Found these rca 5692 red base tubes in an old oscilloscope . Tested at 75%. I don't have anything to put Them in, yet, but maybe later down the road I will.](https://i.redd.it/k4lcxq829rh11.jpg)
Found these rca 5692 red base tubes in an old oscilloscope . Tested at 75%. I don't have anything to put Them in, yet, but maybe later down the road I will.
![NOS *MATCHED PAIR* TOP Grade USSR 6SN7 GT 6N8P 5692 CV181 6H8C TUBE NEW IN BOX#1052064&11 | Reverb Deutschland NOS *MATCHED PAIR* TOP Grade USSR 6SN7 GT 6N8P 5692 CV181 6H8C TUBE NEW IN BOX#1052064&11 | Reverb Deutschland](https://images.reverb.com/image/upload/s--CwmbOAZ3--/f_auto,t_large/v1653731152/d4ykecqdmu8ayn5lkrh9.jpg)
NOS *MATCHED PAIR* TOP Grade USSR 6SN7 GT 6N8P 5692 CV181 6H8C TUBE NEW IN BOX#1052064&11 | Reverb Deutschland
![GatherTOOL 2 Pieces DIY 6h8c Electron Tube Amplifier Vacuum Change 6N8P / 5692 / 6SN7 / ECC33 / CV181 Valve Strengthen Bass Sound for Amplifier : Amazon.de: Musical Instruments & DJ GatherTOOL 2 Pieces DIY 6h8c Electron Tube Amplifier Vacuum Change 6N8P / 5692 / 6SN7 / ECC33 / CV181 Valve Strengthen Bass Sound for Amplifier : Amazon.de: Musical Instruments & DJ](https://m.media-amazon.com/images/I/51Tqz-XBRWL._AC_SX425_.jpg)