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Onkyo TX-SR373 5.1-Channel AV Receiver The Onkyo TX-SR373 is a powerful 5.1-channel AV receiver delivering immersive home cinema sound with advanced features such as Dolby® TrueHD, DTS-HD Master Audio™, Bluetooth® wireless streaming, and precise room calibration. Key Features Dolby® TrueHD and DTS-HD Master Audio™ lossless decoding 4 HDMI® inputs and 1 output with HDCP 2.2 and HDR support Discrete high-current amplifier circuits for dynamic sound AccuEQ room acoustic calibration for balanced audio Bluetooth® wireless technology for easy music streaming USB input for MP3, WMA, and AAC playback Audio Return Channel (ARC) for TV broadcast amplification Easy-to-use connection guide with clearly labelled rear panel Product Overview The TX-SR373 supports studio-quality movie soundtracks with Dolby® TrueHD and DTS-HD Master Audio™ for Blu-ray Disc™ formats. Its HDMI® terminals support 4K/60 Hz, HDR, BT.2020, and HDCP 2.2, ensuring compatibility with modern displays. The discrete analog amplifier circuits deliver controlled power for music, movies, gaming, and TV programmes. AccuEQ room acoustic calibration automatically adjusts speaker distance, output, crossover, and equalisation to suit your listening environment, reducing distortion caused by room acoustics. Bluetooth® wireless streaming lets you play music effortlessly from your mobile device or laptop, enhanced by Onkyo’s Advanced Music Optimizer for improved sound quality. Connect USB memory devices loaded with MP3, WMA, or AAC files for clear, powerful music playback. The receiver also features a user-friendly connection guide with upside-down readable diagrams to simplify setup. Specifications Amplifier Section Power Output (Front L/R / Center / Surround L/R) 135 W/Ch (6 Ω, 1 kHz, 1% THD, 1 Channel Driven) THD+N (Total Harmonic Distortion + Noise) 0.06% (20 Hz–20 kHz, 8 Ω, 1 Channel Driven, 50 W) Input Sensitivity and Impedance 200 mV / 47 kΩ (Line) Frequency Response 5 Hz–100 kHz / 0 dB, -3 dB (Direct Mode) Tone Control ±10 dB, 100 Hz (Bass); ±10 dB, 10 kHz (Treble) Signal-to-Noise Ratio 106 dB (Line, IHF-A Network, 1 kΩ Shorted) Speaker Impedance 6 Ω–16 Ω Video Section Video Input Sensitivity/Output Level and Impedance 1.0 Vp–p ±5% / 75 Ω (Composite) Tuner Section Tuning Frequency Range FM: 87.5 MHz–107.9 MHz AM: 530 kHz–1,700 kHz FM/AM Preset Memory 30 Stations General Power Consumption 210 W Standby Power Consumption 0.3 W Dimensions (W x H x D) 435 x 168 x 326.5 mm Weight 8.0 kg Carton Dimensions (W x H x D) 522 x 247 x 430 mm Weight 9.5 kg