AV Receiver Reviews

Two channels driven continuously into 8-ohm loads:
0.1% distortion at 103.8 watts
1% distortion at 129.9 watts

Five channels driven continuously into 8-ohm loads:
0.1% distortion at 69.0 watts
1% distortion at 86.2 watts

Seven channels driven continuously into 8-ohm loads:
0.1% distortion at 68.1 watts
1% distortion at 77.1 watts

Analog frequency response in Pure Direct mode:
–0.05 dB at 10 Hz
–0.01 dB at 20 Hz
–0.07 dB at 20 kHz
–2.97 dB at 50 kHz

Analog frequency response with signal processing:
–0.39 dB at 10 Hz
–0.11 dB at 20 Hz
–0.51 dB at 20 kHz
–59.01 dB at 50 kHz

This graph shows that the STR-DN1050’s left channel, from CD input to speaker output with two channels driving 8-ohm loads, reaches 0.1% distortion at 103.8 watts and 1% distortion at 129.9 watts. Into 4 ohms, the amplifier reaches 0.1% distortion at 136.8 watts and 1% distortion at 167.0 watts.

There was no multichannel input to measure. THD+N from the CD input to the speaker output was less than 0.007% at 1 kHz when driving 2.83 volts into an 8-ohm load. Crosstalk at 1 kHz driving 2.83 volts into an 8-ohm load was –81.77 dB left to right and –79.25 dB right to left. The signal-to-noise ratio with an 8-ohm load from 10 Hz to 24 kHz with “A” weighting was –107.58 dBrA.

From the Dolby Digital input to the loudspeaker output, the left channel measures –0.04 dB at 20 Hz and –0.51 dB at 20 kHz. The center channel measures –0.05 dB at 20 Hz and –0.47 dB at 20 kHz, and the left surround channel measures –0.05 dB at 20 Hz and –0.52 dB at 20 kHz. From the Dolby Digital input to the line-level output, the LFE channel is +0.01 dB at 20 Hz when referenced to the level at 40 Hz and reaches the upper 3-dB down point at 106 Hz and the upper 6-dB down point at 112 Hz.—MJP

Video Test Bench

Although the STR-DN1050 passed our usual tests for 1080i and 1080p pass-through and offers HDMI 2.0 compliance for handling Ultra HD signals, it lacks the latest HDCP 2.2 DRM compliance that will likely be required for passing some content from future Ultra HD video sources to an Ultra HD display.