what are the drawbacks of changing this capacitor to a different value? assuming the same type of capacitor like nichicon muse bipolar with negligible noise and distortion but maybe 47-100uF instead of 4.7uF. it's supposed to be just the pure audio input so i don't expect the DC offset to be constantly changing by a significant amount. the +4dBu/-10dBu switch is just a basic configuration on the rear panel so it won't be toggled during normal operation. it's ok for studio equipment to have a warm-up period so the high-pass RC filter doesn't need to be particularly fast. it seems a lot of modification specialists prefer to hardwire most of the audio signal paths but i expect the VCA to be the lowest fidelity component in the system after i have swapped the op-amps etc so maybe it makes sense to clean up any residual DC offset coming out of the input op-amp.

>Focusrite 315 Mod
>The vast majority of audio coupling caps are hard bypassed. Bypassing presents no problem for the circuitry* except in a very few instances, the result being small clicks when operating the eq switches. In most of those few instances the glitch is eliminated by replacing the NE5534 with the OPA627 opamp. The OPA627 has virtually zero offset voltage on it’s output and so there is just no dc voltage there to cause a click when it is interupted by a switch.