Not sure about accuphase new amps but older ones are very lacking transparencies but sweet golden tube sound. I inserted one of their 80’s active crossover into my modern Linn/JBL 4333a chain driven by Linn Klimax DS. Within 5 minutes I had to take it out back to passive drive. It lost speed, dynamic drive and transient attacks when playing ‘Keith don’t go’. All the hair raising emotion engagement was gone!