Keep in mind that an internal test tone is not the same as source material - the goal of those test tones is to be at 75dB with the volume at "reference" level of around 0dB. Those tones are not meant to achieve window-rattling 100dB levels. I ran the 1070's predecessor (also rated at 65W/channel) with speakers that tend to prefer a good bit of power to sound their best (Paradigm Studio/60's, Studio/CC center, and three Studio/ADP surrounds) and with no sub (leaving the 60's to run as large and handle both their own low frequency and the .1 channel of 5.1 soundtracks). The ol' 1050 did a fine job under those strenuous circumstances.