NEW Military QUAD 6S6B-V (6С6Б-В) Triode Tubes = 1/2 6N16B-V , 6021 , 6SN7 | eBay
6N16B Tube as an overdrive?
6N16B Line Stage Preamp - Audiophile Diyer
6N16B-V - Vacuum tubes | Russian Electronics company
Pocket pure 6N16B vacuum tube OTL stereo headphone amplifier, warm sounding (amplifier is 45x45x55mm, transformers drive grids in push-pull, tubes use DIP8 socket, black box is a power supply which converts 12V