Googling some materials and I am brought to here, so I am speaking without knowing your experience level.. so please forgive me if I sound rude.
do you have buffer circuit ahead of input toward HiFiberry input? as far as I know their input impedance is around few kOhms , which will cause terrible deterioration of sound quality. Or, is BOME currently or supposedly placed after other real pedal?
anyhow, good luck!