You are right it isn't so low, it is only <1%... sorry!

System Type -   2 way Passive

Sensitivity -   (2.83V @ 1m) 83dB

Long Term Amplifier Power -   (RMS IEC) 150 Watts/channel

Max. Recommended Power -   1000 Watts/channel

Nominal Impedance -   4 Ohms

Frequency Response -   40Hz to 25kHz (± 2.5dB)

Typical Maximum SPL -   120 dB at 1.25 m.

Crossover -   Impedance corrected 1st order passive.

Max Total Distortion -   (T.H.D. + I.M.D.) Less than 1%

Tweeter -   28 mm soft dome.

Bass Driver -   75 mm. pure aluminum wire voice coil.

Dimensions -   400 x 220 x 275 mm / 15.8 x 8.7 x 10.9"

Weight (per monitor) -   14 kg / 31 lbs.

As for an amplifier without global negative feedback being inferior to the Rotel it's very probable but I really don't care because I know from Tube Dude's experience that to an amplifier be accurate it needs global negative feedback (lots of it). Without it the amplifier won't be as accurate as it can possible be so why wasting money?

The 1062 is an excelent accurate starting point...