Most 2.1‑channel receivers provide stereo speaker outputs plus at least one dedicated subwoofer output. Some models include dual subwoofer outputs for more balanced bass.

Power varies by model: compact 2.1 units may deliver around 50 watts per channel (often specified at 4 ohms), while fuller‑featured receivers commonly deliver about 100 watts per channel.

Common inclusions are a learning remote (with batteries), a power cord, an HDMI cable, mounting hardware, an external IR sensor, and a user manual. Exact items depend on the model and are listed in each product's details.

Many compact mini amps use detachable screw‑down speaker connectors and accept speaker cable up to 14 AWG, making them suitable for straightforward speaker hookups.

Typical inputs include HDMI (often with HDMI ARC), optical digital, analog RCA/line‑level stereo, and Bluetooth for wireless playback.

Integration features include HDMI ARC with CEC for TV remote control, learning remotes, and external IR sensors for hidden or behind‑TV installs. Some receivers also list eARC and other advanced HDMI connectivity.