This manual introduces the features and usage methods of Onkyo AV receiver TX-SR803 TX-SR703 TX-SR8370
This manual covers the Onkyo TX‑SR803, TX‑SR703 and TX‑SR8370 AV receivers. It explains safety warnings, power requirements, and how to install the unit safely.
The guide details speaker and antenna connections, HDMI and digital audio inputs, zone‑2 operation, basic and advanced listening modes, and troubleshooting tips.
| Power Output (per channel) | 105 W @ 8 Ω, 20 Hz‑20 kHz |
|---|---|
| HDMI Inputs | 2 |
| Speaker Channels | 7.1 surround |
| Digital Audio Inputs | 7 (5 optical, 2 coaxial) |
| Memory Backup | Battery‑free, retains settings during power loss |
Select the voltage that matches the back‑panel rating, either AC 230 V 50 Hz or AC 120 V 60 Hz.
The TX‑SR803 provides two HDMI inputs.