Integrated amplifiers with analog inputs connect directly to sources such as turntables, while digital inputs accept signals from compatible devices through connections such as optical, coaxial, or USB and use a built-in digital-to-analog converter. Network inputs add access to streamed or shared music over a home network, often alongside wireless control, so installers can combine traditional sources with digital audio in one system.

When selecting an integrated amplifier, match its rated power and supported impedance to the speakers, while considering speaker sensitivity and the listening levels you want to reach. Room size, listening distance, and whether you plan to add a powered subwoofer also help determine the amplifier power and connections your system needs.

Marantz integrated amplifiers can connect to a turntable through the built-in moving-magnet phono input, while televisions and other digital sources can use supported optical, coaxial, USB, or HDMI ARC inputs, depending on the amplifier. Models with a dedicated subwoofer output can connect to a powered subwoofer, and analog line-level inputs support sources such as CD players and other audio components.

A network integrated amplifier makes sense when a system needs stereo amplification, digital and analog source connections, and built-in access to streaming services in one component. For whole-home audio, models with HEOS Built-in can send music to compatible connected rooms, while Wi-Fi, Bluetooth, AirPlay 2, and voice control provide flexible ways to play and manage content.