Onkyo TX-SR313 has 5 channel amplifier and delivers 65 W (8 Ω, 20 Hz – 20 kHz, 2 channel driven).
Onkyo TX-SR313 features Onkyo’s Wide Range Amp Technology (WRAT) circuit layout that prevents phase shifting by pushing the roll-off point higher than the listening-level frequency. Amplifying sound without phase shift creates an uncommonly well-focused and realistic audio image. If phase shift occurs and signal timing is not accurate, then neither is the resulting audio image.
Advanced Music Optimizer
Compressed music enhancement in Onkyo TX-SR313 is done by Onkyo’s Advanced Music Optimizer. While MP3 or AAC files may sound fine through the headphones of your portable digital player, the limitations of these files can be exposed when played back through a quality home entertainment system. This is because a significant amount of high-frequency bit information is lost during the file-compression process. To counter this, Onkyo has designed the Advanced Music Optimizer to compensate for lost bit information and improve the quality of compressed audio signals. This results in a clearer and more expansive sound. Also included in this technology is a loudness correction feature that further improves the audio character of compressed files.
Onkyo TX-SR313 does not come with room correction system.
Onkyo TX-SR313 has 4 HDMI inputs with HDCP 2.2 copy protection.
Front panel has USB, Composite Video and RCA Audio inputs.