4
phase switch is not pressed in, but there are
exceptions!).
EQ Specifications
The Ultrapure Preamp features /-20 db bass,
mid, and treble controls. The special super-wide-
band midrange filter is absolutely great in
combination with the Pure Pickup. The bass control
is set to roll of at 100Hz, the midrange at 1.5kHz with
extra large bandwidth and the treble are set at
10kHz. Input impedance is 1 meg. Output impedance
is 100 Ohm. Frequency response is 30 – 20000 Hz.
We recommend pre-setting the 3-band EQ and
phase at sound check as the EQ knobs are
somewhat difficult to reach on the fly. When done
correctly, there should be no need to adjust during
the performance. If there is, we found it easiest to
turn the knobs with thumb and middle fingers,
encircling the strings. The volume slider is always
easily accessible.