Now to the graphs. The first four were taken using Dolby Digital test signals and the signal was measured at one of the pre-out jacks. I used a Toslink digital input jack assigned to VCD, and Stereo Direct mode.

Look at the low distortion and low noise floor using a 1 kHz test signal. The maximum voltage at the pre-out was an astounding 6.33 volts RMS. That is more like what you find with a dedicated preamplifier. The S/N ratio at maximum pre-out voltage, using 1 kHz, was 125 dB . . . again astonishing.

At 5 and 6 kHz input signals, IM peaks were very, very small.

At 10 kHz, THD+N was less than 0.15%.

Using 10 kHz and 11 kHz test signals, again, IM peaks were very low. The AVR-4806 has an excellent preamplifier section!

Click Here to Go to Part VII.

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