Is there a way to adjust the effects loop level?

[Swede]

I’m currently trying to run a delay pedal in the effects loop. However, when I switch on the pedal, there’s a noticeable volume drop in the amp’s output. Is there a way to adjust the effects loop’s level or mix? Seems like the ground lift is the only control directly associated to the fx loop. Am I missing something?

[Felix]

@swede It's not possible to adjust the effect loop level on BIAS Head/Rack, I'd suggest you to control it through your FX pedals.

[Ash Wolford]

FX loops usually don't have their own level controls. If your return signal is quieter, your effects are making it quieter.

[Swede]

Thank you.