Rocktron Deep Blue - Manual (Page 9)

Specifications
Maximum Input
Input Impedance
Current Consumption
Power Requirements
-5dBu
1M ohm
30ma
9VDC <=300ma
* CE Approved *
Hints and Tips:
Chorus pedals usually sound better when placed after distortion in
the signal chain. Thus, if you are using stomp boxes, put the
chorus pedal after the distortion. If using multiple pedals such as
delays and other modulation effects, try the Deep Blue in different
parts of the signal chain until you find the sound you like best.
If you have an effects loop in your amplifier - try putting the
chorus in the effects loop for a different sound (please follow all
instructions in your amplifier manual when connecting to your
effects loop).