BOSS AUDIO S-288 4 Channel Bluetooth 5.0 Receiver 50W x 4 RMS 1200W Max

Four-channel Bluetooth 5.0 receiver

The BOSS AUDIO S-288 is a 4.0 channel stereo amplifier rated at 50W x 4 RMS with a 1200W maximum output. It drives 4 to 8 ohm passive speakers from a compact half-DIN chassis suited to desktop or home-theatre placement. Bluetooth 5.0 gives a 33-foot wireless range alongside USB, SD, FM, RCA, 3.5mm auxiliary and microphone inputs. The unit operates on 100-240V AC or 12V DC at 3A to 5A.

Class D efficiency and low distortion

Class D topology keeps power draw modest and heat output low during typical listening sessions. Total harmonic distortion is specified at 0.05% and signal-to-noise ratio at 90dB, so background noise stays inaudible at normal volumes. The amplifier runs from an external 12V supply or direct mains voltage without an internal fan, contributing to quiet operation in living-room environments.

Half-DIN chassis with front-panel controls

The black half-DIN enclosure measures 14.33in wide, 12.83in high and 9.06in deep, fitting standard equipment racks or shelf spaces. Bass, treble and volume knobs sit on the front panel for tactile adjustment, while the supplied remote handles source selection and level changes from the listening position. Speaker terminals accept bare wire or banana plugs for four channels, and a single 3.5mm microphone jack supports paging or karaoke use. Buyers needing more than four zones or built-in streaming apps will need a different solution.