Two channels driven continuously into 8-ohm loads:
0.1% distortion at 75.8 watts
1% distortion at 105.0 watts

Five channels driven continuously into 8-ohm loads:
0.1% distortion at 53.1 watts
1% distortion at 66.7 watts

Analog frequency response in Direct mode:
–0.01 dB at 10 Hz
–0.01 dB at 20 Hz
+0.05 dB at 20 kHz
–2.49 dB at 50 kHz

Analog frequency response with signal processing:
–0.12 dB at 10 Hz
–0.02 dB at 20 Hz
–0.07 dB at 20 kHz
–59.02 dB at 50 kHz

This graph shows that the TX-NR414’s left channel, from CD input to speaker output with two channels driving 8-ohm loads, reaches 0.1 percent distortion at 75.8 watts and 1 percent distortion at 105.0 watts. Into 4 ohms, the amplifier reaches 0.1 percent distortion at 119.1 watts and 1 percent distortion at 150.9 watts.

There was no multichannel input to measure. THD+N from the CD input to the speaker output was less than 0.009 percent at 1 kilohertz when driving 2.83 volts into an 8-ohm load. Crosstalk at 1 kHz driving 2.83 volts into an 8-ohm load was –76.73 decibels left to right and –79.61 dB right to left. The signal-to-noise ratio with an 8-ohm load from 10 hertz to 24 kHz with “A” weighting was –106.06 dBrA.

From the Dolby Digital input to the loudspeaker output, the left channel measures +0.01 dB at 20 Hz and +0.11 dB at 20 kHz. The center channel measures +0.01 dB at 20 Hz and +0.07 dB at 20 kHz, and the left surround channel measures +0.01 dB at 20 Hz and +0.10 dB at 20 kHz. From the Dolby Digital input to the line-level output, the LFE channel is +0.09 dB at 20 Hz when referenced to the level at 40 Hz and reaches the upper 3-dB down point at 96 Hz and the upper 6-dB down point at 116 Hz.—MJP

Video Test Bench
The Onkyo provides no onboard video processing, so the majority of our benchmark tests don’t apply, but it passes an HDMI signal without any negative effects.—DV

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