I cannot understand how to use my external effects with the Code 4 100 watt head...the owner's manual is worthless...and I cannot find any YouTube videos explaining this...does ANYBODY understand how to use external rack effects with this head? Thanks.
Code is designed to be a stand-alone unit. However, you can use external FX in the loop. You need to connect the ‘send’ of the Code to the input of the external FX and then the output of the external FX to the return on the Code. As the FX loop is post master volume the FX send level is controlled with the master. So, the louder the amp the more FX send signal. You may also need to adjust the in and out levels on your rack FX.
If you are using the Code footswitch then you can only Control the amp with it and not your external FX.