INamp V1.4 - ASSEMBLY GUIDE Rev. Jun 2019
BONUS TRACK
Second channel of INamp could be configured so the 6,5” jack is routed to the output.
Like this we can configure the module as a Send return interface with external pedals or use it as a
single preamp with an attenuated output.
In order to do so follow these steps:
- Locate jumper pads between C11 and R10 at main board.
Cut the trace connecting upper and middle pad and solder central and bottom one.
- Bridge C11 with a resistor leg or wire.
With these changes second channel 6,5” Jack will be linked with the output.
Give it a try.
Both Inamp channels are made around two inverting amplifier stages. The value for the resistor can be
changed to have a different response. Take a look to Wikipedia article about op amps to know a bit
more about the matter:
http://en.wikipedia.org/wiki/Operational_amplifier_applications
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