Across the results you’ll find a wide range of channel configurations, from simple stereo/2.1 and 3.0 setups up to multi‑channel immersive systems such as 5.0.2, 7.1.2, 11.1.4 and even large 13–16 speaker configurations.
Some systems include a dedicated wireless subwoofer or have built‑in woofers, while others note that you can add an optional wireless subwoofer to achieve deeper bass.
Common connectivity includes HDMI and HDMI ARC, optical audio, Bluetooth wireless, and on some models USB and Wi‑Fi; several listings explicitly mention HDMI, Optical Audio, Bluetooth and Wi‑Fi support.
Some systems include or support wireless rear speakers and describe flexible placement, including free‑standing or wall‑mounting the wireless speakers and placing them virtually anywhere for broader surround coverage.
Several listings describe automatic room calibration using built‑in microphones or sound‑field optimization that analyzes room acoustics and adjusts audio settings.
Some units include built‑in voice‑assistant support; many list smart‑control options such as companion mobile apps and wireless streaming protocols for phone or TV integration.