A blast from the past!
RAR 2.1 soundbase here
These are OK boards - I have had one for years and it still works (having said that I never tested its surge capabilities).
The response time is claimed to be <1 nanosecond with a suppression of 2000 joules - which means it provides reasonable protection for AV and PC.
If you like to have 6 outlets instead they are also available for the same price
As for the sound base, it has all the connections that you can ask for, optical, HDMI, coaxial for digital (only via optical conversion, my mistake) and analog, and comes with a RCA to 3.5mm cable for those using 3.5mm and has bluetooth. (though only RCA cables are included in the box, no HDMI, high impedence coaxial or optical cables included). However that's about all I can say. It arrived yesterday and the subwoofer doofs as you would expect from a cheap set of speakers but it might improve the output of some cheaper TVs simply due to the fact that it is front facing. It also doesn't look bad and feels decently built.