Audient MiCO Dual Microphone Preamplifier - Manual (Page 10)

Operation Manual
10
© aud ient 12/2008
Specifications
Analogue
Maximum Input: +10dBu (+30dBu pad in) @ minimum gain
THD+N: <0.009% @ 1kHz with +20dBu ouput
<0.003% @ 1kHz with +4dBu output
Noise: -87dB @ 18dB gain, 22Hz-22kHz, unweighted
eIN: Better than -127dBu @ 66dB gain/ref 150ohm
Frequency response: +/-0.2dB 20Hz - 22kHz @ 60dB gain
Digital
Internal sample rates: 44.1kHz, 48kHz, 96kHz
external sample rates: Any between 32kHz and 192kHz
Bit depth:
24bit
Scaling: 0dBFS = +18dBu
THD: -109dBFS @ 96kHz, A-Weighted
Dimentions: 430mm x 270mm x 80mm
Weight: 2.5kg
What is Variphase?
Variphase provides a means of shifting the phase of a signal far more accurately
than with a simple polarity invert switch, and without moving the microphone.
Its important to note that Variphase does not delay the signal; instead it uses the
phase response characteristics of analogue filters.
This circuitry provides another tool to use in combination with existing techniques,
such as polarity inversion and careful microphone placement. In some situations
such as a double mic’ed snare drum, Variphase may be more practical than moving
the microphone as this may increase the amount of spill from other drums. In other
situations such as Mic’ing and DI’ing an electric bass, moving the microphone may
be more practical, and Variphase can then be tweaked to optimum position.
Of course variphase doesn’t only have to be used to perfectly phase align
signals, shifting signals in and out of phase can have some interesting results, so
experiment!