Output Connections; Input Impedance - AEA RPQ2 Owner's Manual

The DI switch will override all sources going to the XLR output.

Output Connections

In Mic Mode, the XLR Input routes through the preamp gain stage,
optional CurveShaper™ EQ, and Output Level control to the XLR output.
You may also use the 1/4" Preamp Out (ref. C) simultaneously as an
auxiliary output of the preamp gain stage. Signals running through the
XLR input (ref. D) in Line or DI Mode will pass through the preamp gain
(ref. #2) stage and 1/4" Preamp Out.
In Line Mode, sources plugged into the line connector will bypass the
preamp gain stage and route through the optional CurveShaper™ EQ
and Output Level control to the XLR Output.
When the DI switch is engaged, sources plugged into the DI connector
will bypass the preamp gain stage and route through the optional
CurveShaper™ EQ and Output Level control to the XLR Output.
Note: The DI switch will override all sources going to the XLR Output. If
you do not hear output from the XLR and are not using the direct input,
check if the DI switch is engaged.
The output of the RPQ2 emulates a transformer-coupled output and can
be used as either a balanced or unbalanced signal (depending on how
your cable/system is configured). When balanced, the maximum output
level is +28 dBu; when unbalanced, the maximum level is +22 dBu.
(These are as measured into a 600 Ohm load; the recommended load is
> 10K Ohms; 0 dBu = 0.7746 V rms.)
When unbalancing the XLR Output, pin-3 must be tied to ground at the
receiving end (i.e. the input of the following device). Do not tie pin-3 to
ground directly at the output of the RPQ2.
As noted above, test your cables regularly to be sure that they are in
proper working order.

Input Impedance

The average preamp has an input impedance sitting around 1200
Ohms. Passive ribbon microphones and numerous moving-coil dynamic
microphones are very particular about how they interact with preamps
and their respective impedances play an important part in this. Since
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