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! Center Frequency !! Q Factor !! Low Frequency !! High Frequency
|-
| 1,000 HZ Hz || 0.5 || 500 HZ Hz || 2,000 HZHz
|-
| 1,000 HZ Hz || 1 || 750 HZ Hz || 1,500 HZHz
|-
| 1,000 HZ Hz || 2 || 875 HZ Hz || 1,250 HZHz
|}
Most amps have Bass, Mids, Treble, and Presence controls, or '''BMTP'''. The exact ranges for each control depend on the amp, and often they actually interact with each other, shifting the shape and center frequency of the others. They roughly correspond to the following frequency ranges:
* '''Bass''' - 60 - 350 hZHz* '''Mids''' - 350 - 1,800 hZHz* '''Treb''' - 1,800 - 5,000 hZHz* '''Pres''' - 3,000 - 10,000 hZHz
Some amplifiers or pedals simply use a '''tone''' control. Often this is just a band-pass filter with a wide Q, and the control shifts the center frequency. Thus, low settings allow low frequencies to pass while attenuating highs and vice versa.