That review is extremely useful, hard to read because of the poor resolution, but if you try hard enough you can figure it out for the most important parts.
The following information should be applicable to answer your question "Would it be safe to run 2x LA90’s bridged to power Focal 948s?"
Assuming the 85 dB 1 kHz indicated on the graphs below refers to 1 meter distance, then you can safely assume it will apply to 79 dB at 2 meters and 71 dB at 4 meters as that would be with just one speaker and zero room gain.
The graphs show the following worst condition in terms of loading:
At 100 Hz:
Current: 0.361 A
Output voltage: 1.46 V
Power: 0.52706 (W), Note that the unit is W, that is, watt, is only correct for resistor test load otherwise it should be VA for speaker load that is reactive.
So if you bridge two LA90, the current would increase to 0.722 A and the output power would be 1.05412 W
Since you know your distance, speaker sensitivity and the spl you need, you should be able to figure the current required for your worst case condition.
The LA90 specs say:
- Output power
- Stereo
- 90W x 2 @4Ω THD+N<1%
- Stereo
Topping LA90 Review (Integrated Amplifier)
This is a review and detailed measurements of the Topping LA90 integrated amplifier. It was sent to me by the company and costs US $800. I must say, this is one interesting industrial design. Everything oozes style despite the diminutive package. This aspect continues in the operation of the...
www.audiosciencereview.com
. I think from a purely technical measurements, la90 is a great amp, one of a kind even, no denying that. But measurements alone are not everything 
