Catalyzes the transamination of phenylalanine, tyrosine and tryptophan. Shows virtually no activity towards aspartic acid, alanine, valine or isoleucine. 2-oxoglutarate + an aromatic L-alpha-amino acid = an aromatic oxo-acid + L-glutamate Optimum temperature is 95-100 degrees Celsius. Homodimer. Belongs to the class-I pyridoxal-phosphate-dependent aminotransferase family.