The term "high current" implies large power supply to provide additional reservior when needed for peaks (especially bass peaks). For advertising purposes amps are specified based on driving a 1,000 Hz sine wave, not dynamic signals (like music) to reactive loads (like speakers). To my eye, this design doesn't look particularly "high current" to me, but the amount of power is surely adequate in all but the largest rooms or to ruin your hearing.
Keep in mind that we listen to dB's (with 1 dB being very small and average listening levels for most audiophiles I know of being about 75 dB) and it takes 10 times the wattage to add 10 dB of gain. So the difference between 60 wpc and 100 wpc or even 150 wpc is only about 3 dB. Speaker efficiency can make more difference than amp sizes.
The speakers use well respected drivers, but I'm not a fan of mixing different order crossovers or of 3rd order crossovers in general. And the stated efficiency is rather low, making their ability to portray lifelike dynamics suspect. (There's no such thing as the perfect speaker.)
The digital volume control on the SB works very well, but of course it won't control any other source component. I had a SB but had to give it up after too many technical difficulties and me being a computer dunce. Modding the SB and adding power supplies should take you as far down the rabbit hole of audio that you'll care to go for a good long time.
Element Cable is another good/inexpensive/no nonsense cable vendor. The king of quality for the buck for power cords though goes to Volex.
If you need a rack, here's a nice little solution for $30 plus shipping goggle "Ikea Corras".
