To connect to a conventional preamplifier

●Connect the sockets marked INPUT on the back panel of the Stereo Power Amplifier to the outputs from your preamplifier.

You should either use a twin-screened audio cable, or a pair of single-screened audio cables. These cables can have a considerable effect on the quality of the sound, and you are advised to seek your dealer’s advice on the best type of cables for your system.

To connect to a 501 Control Unit

557 Stereo Power Amplifier

501 Control Unit

INPUT

INPUT

OUTPUT

Audio lead

●Connect the sockets marked OUTPUT L and R on the back panel of the 501 Control Unit to the INPUT sockets on the back panel of the 557 Stereo Power Amplifier.

To connect to A500 Loudspeakers

A500 Loudspeaker

A500 Loudspeaker

557 Stereo Power Amplifier

●Set the BRIDGE MODE switch to the OFF position.

●Use the links provided to bridge the HF and LF terminals on the back of each loudspeaker.

●Connect one of each pair of the red and black terminals on the back panel of the 557 Stereo Power Amplifier to the red and black terminals on the A500 Loudspeakers.

Amplifier Power Stereo the up Setting

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