AV Receiver Reviews

Two channels driven continuously into 8-ohm loads:
0.1% distortion at 113.5 watts
1% distortion at 129.2 watts

Five channels driven continuously into 8-ohm loads:
0.1% distortion at 63.9 watts
1% distortion at 73.2 watts

Seven channels driven continuously into 8-ohm loads:
0.1% distortion at 57.0 watts
1% distortion at 65.1 watts

Analog frequency response in Pure Direct mode:
–0.06 dB at 10 Hz
–0.02 dB at 20 Hz
+0.11 dB at 20 kHz
–2.49 dB at 50 kHz

Analog frequency response with signal processing:
–0.23 dB at 10 Hz
–0.08 dB at 20 Hz
–0.12 dB at 20 kHz
–64.25 dB at 50 kHz

This graph shows that the RX-A1020’s left channel, from Audio1 input to speaker output with two channels driving 8-ohm loads, reaches 0.1 percent distortion at 113.5 watts and 1 percent distortion at 129.2 watts. Into 4 ohms, the amplifier reaches 0.1 percent distortion at 146.1 watts and 1 percent distortion at 173.0 watts.

Response from the multichannel input to the speaker output measures –0.08 decibels at 10 hertz, –0.02 dB at 20 Hz, –0.03 dB at 20 kilohertz, and –2.80 dB at 50 kHz. THD+N from the Audio1 input to the speaker output was less than 0.007 percent 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 –103.60 dB left to right and –99.49 dB right to left. The signal-to-noise ratio with an 8-ohm load from 10 Hz to 24 kHz with “A” weighting was –107.17 dBrA.

From the Dolby Digital input to the loudspeaker output, the left channel measures –0.03 dB at 20 Hz and –0.04 dB at 20 kHz. The center channel measures –0.03 dB at 20 Hz and –0.05 dB at 20 kHz, and the left surround channel measures –0.03 dB at 20 Hz and –0.04 dB at 20 kHz. From the Dolby Digital input to the line-level output, the LFE channel is +0.15 dB at 20 Hz when referenced to the level at 40 Hz and reaches the upper 3-dB down point at 94 Hz and the upper 6-dB down point at 116 Hz.—MJP

Video Test Bench
The Yamaha exhibited poor HD video processing (1080i in to 1080p out), with visible moire on both the 3:2 HD and 2:2 HD tests. It also failed the 2:2 SD test with visible artifacts, though this is a fairly common shortcoming. It had no problem with the video clipping and resolution tests, which require no processing but merely a clean passthrough of a 1080p source to a 1080p output.—TJN