BURWEN BOBCAT TONE BALANCER - MORE BASS SETTINGS
Bass boost at 15 Hz is 24 dB above the 1,000 Hz level, 10 dB more than the Balanced boost.  High frequencies are down an extra dB and 20 kHz is still up 2
dB.  Volume automatically adjusts to the same subjective level when you move the Tone sliders.  The graph dB scale changed automatically.