API Audio The Channel Strip - Manual (Page 28)

7.0 Rear Panel Interface
The rear panel of The Channel Strip provides a comprehensive package of interfacing options.
With the exception of the microphone and instrument inputs, all audio inputs and outputs are balanced, low
impedance +4dBu line level connections. All ¼” connectors are tip, ring, sleeve phone jacks.
7.1 Audio Path Inputs
The Channel Strip provides multiple audio inputs at various points in the audio path:
INST (Instrument): Instrument level input to the 512C Preamp (front panel)
• ¼” tip, sleeve jack
• -10dBu
• Unbalanced, high-impedance instrument input
MIC IN: microphone input to the 512C Preamp
• Female XLR
• Balanced, low-impedance input
LINE IN: Line level input to the 512C Preamp
• ¼” tip, ring, sleeve jack
• +4dBu
• Balanced, low-impedance input
INSERT RETURN: The signal present at this jack will replace the input to the 325
Line-Driver when the INSERT switch is engaged
• The output section is normally fed from the SECOND EFFECT OUT
• Engaging the INSERT switch will break the normal from the SECOND
EFFECT OUT
• ¼” tip, ring, sleeve jack
• +4dBu
• Balanced, low-impedance input
SECOND EFFECT IN: Line level input to the second signal processor in audio
path
• Fed from the FIRST EFFECT OUT
• Inserted signal will break the normal from the FIRST EFFECT OUT
• Switching ¼” tip, ring, sleeve jack
• +4dBu
• Balanced, low-impedance input
FIRST EFFECT IN: Line level input to the first signal processor in audio path
• Fed from the 512C Preamp output (PRE OUT)
• Inserted signal will break the normal from the 512C Preamp output
• Switching ¼” tip, ring, sleeve jack
• +4dBu
• Balanced, low-impedance input
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