Meyer Sound Meyer Sound Connects to the MPS-488P Channel Output connector Connects to the MPS-488P Channel Output connector or ULTRA-X20XP, ULTRA-X22XP, ULTRA-X23XP, USW-112XP, UP-4slim, UP-4XP, MM-10XP, UPJ-1XP, UPJunior-XP, UPM-1XP and UMS-1XP loudspeaker fitted with Phoenix 5-pin male connector