A processor handles the supported signals and audio processing; separate power amplification is generally part of the system. Check the exact product’s outputs and amplified functions, if any. Match the intended speaker layout with both processing and amplification before comparing channel counts.

Further reading: Related collection and details · Related collection and details

A dedicated processor generally handles source switching, decoding and signal processing, while separate power amplifiers drive passive speakers. Check its output types and channel count against the amplifiers and planned layout. Powered subwoofers receive a different signal path from passive main speakers. Compare the complete processor-and-amplifier system rather than assuming a processor price includes the amplification found in many AV receivers.

Further reading: Home theater audio guidance

List every speaker channel, match the processor outputs to suitable amplifier inputs and check how the equipment will power on and be controlled. Confirm connectors, channel assignment and any trigger requirements. Include cable routing and ventilation for the full equipment rack. A processor supporting many channels is useful only when the rest of the system can drive and place them correctly.

Further reading: Home theater audio guidance

Document the source formats and projector input requirements, then check that the exact processor’s HDMI paths support them together. Include refresh rate, HDR, audio formats and control behavior. Compare available configuration or room-correction features separately from video throughput. A processor upgrade should solve a defined system limitation, not merely add more output channels than the room can use.

Further reading: Home theater audio guidance

For Preamp/Processors, compare the exact configurations rather than the category label alone. Current example listings include “Marantz AV 10 Reference 15.4 Channel Pre-Amplifier And Processor with HEOS Built-In” and “Marantz AV 20 Reference 13.4 Channel Balanced AV Preamplifier Powered by HEOS”. Use their individual specifications to separate differences in size, construction, source compatibility or supplied components. Start with the configuration that solves the job in your room, then compare the relevant alternatives. Collection membership is not verification of every feature implied by the category name.

Further reading: Product specifications · Product specifications