Hifiberry amp


I‘m already got a Running System. With a Raspberry, (cheap) amp and passive Soundboxes.

Now i want a better sound. So i choose the hifiberry amp.
My System is Running 24/7 and i wonder if i can switch off the hifiberry while volumio is inactive.
At My actual setting i Switch the cheap amp with the amplifier switch Plugin (via a 230v relais on the Raspberry). Is this already possible with the hifiberry? I think it‘s not neccasary to plug in the hifiberry 24/7