Pay for features you need and none that you don’t with the TX-SR373, a future-ready AV hub that focuses on dynamic reproduction of the most popular multichannel soundtracks, including DTS-HD Master Audio™ and Dolby® TrueHD, with surround calibration included. Discrete high-current amps love music: use Bluetooth® wireless technology with Qualcomm® aptX™ audio to stream any music playing on your phone, tablet, or laptop with no loss in original quality*. Connect all your gear (from network players to vintage consoles) through to the TV via one HDMI® cable for a clutter-free install. Easy to use and with plenty of muscle, the TX-SR373 is an affordable way to get real theater sound at home.

# Channels5.2
Power Watts/Ch (6 Ohms 1kHz, 1 Channel Driven, FTC)155 Watts, 10% THD
Power Watts/Ch (8 Ohms 20-20kHz, 2 Channels Driven, FTC)80 Watts, 0.08% THD
Dynamic Audio Amplification-
H.C.P.S. (High Current Power Supply)-
Non-Phase Shift Amplifier-
THX Certified-
Continuous 6 Ohms Rated-
Certified 4 Ohms Performance-
Discrete Output Stage Circuitry
Amplifier Design-
Independent Block Construction (Amp/Preprocessor)-
Bi-amp Capability For Front-
Dolby Atmos-
32-Bit Digital Signal Processing Engine-
Dolby DecoderTrue HD
DTS DecoderDTS-HD Master Audio
ONKYO GAME Surround Modes-
VLSC for Noiseless Audio Processing-
THX Processing Mode-
AccuEQ Room Calibration
Phase-Matching Bass Boost-
Direct/Pure Mode✓ / -
Pure Direct Analog Path Mode-
Advanced Music Optimizer
384K/32 Bit DACs-
192K/24 Bit DACs
Analog Audio IN3
Phono Input-
Digital Audio IN (OPT/COAX)1 / 1
Composite Video I/O2 / 1
Component Video I/O-
Front Panel HDMI-
Front-Panel A/V-
USB Input✓ (Front)
HDMI I/O4 / 1
HDMI 4K/60 Hz- Capable HDMI Terminals
HDCP 2.2 Copy-Protection Compatibility
HDMI Support for High Dynamic Range
HDMI Support for 3D, Audio Return Channel and CEC
BT.2020 Support
HDMI Support for Deep Color, x.v.Color, LipSync
HDMI Support for DVD-Audio, SACD, Multichannel PCM
Analog To HDMI Upconversion-
1080p to 4K Upscaling-
4K Passthrough
Analog Pre-OutsDual Subwoofer
Speaker A/+B-
Powered Zone 2-
Powered Zone 3-
Zone 2 Line Out-
Zone 2 Video Out-
Zone 2 Digital to Analog Audio Conversion-
Zone 3 Line Out-
Whole House Mode-
FireConnect Multi-room Audio-
Google Cast-
Supports Onkyo Remote App-
Internet Radio Capable-
Spotify Connect Support-
Streaming Audio From PC / Network-
Hi-Res Streaming Audio Formats-
Streaming Audio From USB memory
Wireless Network-
Bluetooth✓ (Qualcomm aptX)
Integration Access
IR Input-
IR Output-
ONKYO-RI System Control-
RIHD (Remote Interactive Over HDMI)-
12V Trigger-
Pre-Pro/Learning Remote- / -
On Screen Remote Programming-
Hybrid Standby Function-
Smart Grid-Ready-
Auto Speaker Calibration W/Mic.AccuEQ
OSD Out-
Solid Aluminum Front-
Transparent High-Grade Speaker Terminals-
Detachable AC Cord-
Warranty2 YEARS


Amplifier Section
Power Output
All Channels155 W/Ch (6 Ohms, 1 kHz, 10% THD, 1 Channel Driven)
80 W/Ch (8 Ohms, 20 Hz–20 kHz, 0.08% THD, 2 Channels Driven, FTC)
Dynamic Power-
THD+N (Total Harmonic Distortion + Noise)0.06% (20 Hz–20 kHz, 8 Ohms, 1 Channel Driven, 50 W)
Damping Factor-
Input Sensitivity and Impedance200 mV / 47k Ohms (Line)
Rated RCA Output Level and Impedance-
Maximum RCA Output Level and Impedance-
Phono Overload-
Frequency Response5 Hz–100 kHz / 0 dB, -3 dB (Direct Mode)
Tone Control±10 dB, 100 Hz (Bass)
±10 dB, 10 kHz (Treble)
Signal-to-Noise Ratio98 dB (Line, IHF-A)
Speaker Impedance6 ohms–16 ohms
Video Section
Input Sensitivity/Output Level and Impedance-
Video1.0 Vp–p ±5% / 75 Ohms (Composite)
Component Video Frequency Response-
Tuner Section
Tuning Frequency Range
FM87.5 MHz–108 MHz
AM530 kHz–1,700 kHz
FM/AM Preset Memory30 stations
Power SupplyAC 120 V~, 60 Hz
Power Consumption210 W
No-Sound Power Consumption-
Standby Power Consumption0.35 W
Dimensions (W x H x D)17 1/8" x 6 5/8" x 12 7/8" (435 x 168 x 326.5 mm)
Weight17.6 lbs (8.0 kg)
Dimensions (W x H x D)20 9/16" x 9 3/4" x 16 15/16" (522 x 247 x 430 mm)
Weight20.5 lbs. (9.3 kg)
UPC Code


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5.2-Channel A/V Receiver - TX-SR373

  • Product Code: TX-SR373

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