I'm wondering why you would buy such a low powered mediocre amp, when there are so many excellent alternatives available for just a little more money. There is a sweet spot for good quality budget audio but it is not as low as $100.
e.g. Topping PA5 puts out close to 50W into 8 ohms and received a rave review from Amir. It costs US$350, so for another $250 you get reasonable power output with excellent performance.
When you consider the crazy cost of some "name" amplifiers, $350 is inexpensive for a quality amp, especially if you take a long term view and amortise it over say 10 years or longer. Sometimes paying a little more for quality just makes sense.
This is a review and detailed measurements of the Topping PA5 stereo desktop amplifier. It was sent to me by the company and costs US $349. PA5 enclosure looks like their standard DACs and such: Hard to imagine that an amplifier can fit in the same size but here we are. There are large...
www.audiosciencereview.com
Just add a Wiim Mini (or chrome cast) streamer and a Topping E30 DAC and you have a SOTA front end that will produce an audibly transparent signal and enough power to make any decent bookshelf speaker sound good. All for little more than US$500.
Enjoy your weekend,
Ajax