Well, the amp is fine as long as it's kept under 10 W. (Fig. 9, < .1% THD + N) http://www.ti.com/lit/ds/symlink/tpa3001d1.pdf http://www.ti.com/lit/ds/symlink/t

Well, the amp is fine as long as it's kept under 10 W. (Fig. 9, < .1% THD + N) http://www.ti.com/lit/ds/symlink/tpa3001d1.pdf http://www.ti.com/lit/ds/symlink/tpa3001d1.pdf OTOH, it's a $1.80 part...and retail, in a board, under $7 :-) http://www.ebay.com/itm/DC-8V-20V-Mini-TPA3001D1-20W-Mono-Class-D-Audio-Power-Amplifier-AMP-Board-/201439878578 http://www.ebay.com/itm/DC-8V-20V-Mini-TPA3001D1-20W-Mono-Cl...