Lignin degradation and detoxification of lignin-derived products (By similarity). Cleaves the C-C and C-O bonds of some phenolic lignin model compounds (such as O- and P-quinols, aminophenols and phenylenediamine) (PubMed:8919775). May also be involved in synthesis of phenoxazinone pigments (PubMed:9572949). 4 hydroquinone + O2 = 4 benzosemiquinone + 2 H2O Binds 4 Cu cations per monomer. By lignosulfonate, veratryl alcohol and 2,5-xylidine. Belongs to the multicopper oxidase family.