The Culture Vulture Super 15 showcases several inspired new features. The Drive switch has three positions with a +10dB option sitting squarely between ‘Normal’ and ‘Overdrive’, enabling users to make their sounds ‘a little more crunchy’ with increased brightness. Meanwhile, the Drive knob now goes all the way up to 15, rather than the decidedly more conservative Spinal Tap-favoured 11. The Function switch now offers further enhancements including special dynamic tunable mid-lift in the P positions and extra drastically-processed harmonics in the SQ positions. The new unit also has a two position Presence switch as featured on Thermionic Culture’s popular Solo Vulture product. The Output Level controls have a -10dB attenuator which can be used in conjunction with Drive +10dB for comparison purposes or just to reduce high levels. Five NOS military-grade valves are utilized for long life, low noise, and enhanced performance.