I ended up getting a Mini Gan 5 amp from Premium Audio.
There is a sticker on the outside enclosure that states the warranty is voided if I remove a sticker covering an enclosure screw. So I'm not able to get a good view of the PCB and power supply of the guts but from the cracks it looks beautiful in red PCB with gold colored heat sinks.
The power supply is not an outside enclosure brick type enclosure. The power supply is built inside of the small amplifier case.
t's a very nice modern small and powerful Gallium nitride class D amplifier that has no problem driving my tiny Tang Band W4 1879 4" speakers like well made musical instruments. The speakers enclosures are IWISTAO HIFI 4 Inches Full Range Speaker Empty Labyrinth Birch cabinets.
The sound reproduction that my ears experience are precise 3 dimensional harmonically clear frequencies that are juicy and soft with no sting. Very easy to listen to my ears. Immersive and enjoyable.
I tried out my 100W Klipsch RP-250F speakers and they can drive them no problem and sound great as well.
