A step by step guide on how to connect the preamp in a vintage integrated amplifier to an external amplifier, using photos taken from a Marantz 2270 receiver and Emotiva BASX A-100 amplifier.
Connecting an integrated receiver’s preamp to an amplifier only requires connecting a pair of RCA cables to the correct inputs (read further below for photos):
- Locate the Main In and Pre Out inputs with jumpers on the rear of the vintage receiver.
- Remove the jumpers from the inputs on the receiver and store them in a safe location.
- Plug RCA cables into the Pre Out input on the receiver with the red cable in the Right input and the white cable into the Left input.
- Next, look at the rear of the amplifier and locate the Input RCA inputs.
- Connect the RCA cables from the receiver to the Input RCA inputs on the rear of the amplifier.
- Power on the receiver first, then the amplifier and use the volume control on the receiver to adjust volume as needed.