The Apex PE133MkII has an electronically balanced input with an impedance of
10kohm on each leg, overload point of +22dBu and CMRR or better than 65dB within
the audio band. Pin 2 of the XLR is hot according to the internationally recognised
The output is electronically balanced, simulating a transformer output in that
pin 3 should be grounded when driving an unbalanced input. Maximum output is
+21dBu into 600 ohms with an output impedance of 51 ohms.
Frequency response: 20Hz-20kHz +0/-0.5dB, graphic in
THD: <0.01% (20Hz-20kHz)
Noise: <-94dBu graphic & parametric in at 0dB settings, 22Hz-22kHz
Level control: minus infinity to +6dB
Level control 0dB accuracy: ±0.2dB
Overload indicator: lights for 200ms if the instantaneous peak voltage anywhere
within the unit comes within 2dB of clipping
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