Bode plots were performed on the FET eTap2HW unit to study the effect of the Presence control and the Cutting Edge Filter (CEF).
The input signal was a 250mV peak swept frequency sine wave. Sweep range 50 – 5000Hz. Echo Model 7, all controls zero, Level = 6
CEF: OFF; Presence: Min;
CEF: OFF; Presence: Max;