How does this stack up against a Teensy? The rev 4 is ~$24, and the audio shield is ~14, so that clocks in at about 75% the price of the sonatino. Looks like t

How does this stack up against a Teensy? The rev 4 is ~$24, and the audio shield is ~14, so that clocks in at about 75% the price of the sonatino. Looks like the sonatino picks up more flash, wifi (at the cost of an antenna, though), ble. AFAICT the teensy is limited to 44.1/16 but can do up to 16 channels, but doesn't 'officially' support the adc for audio in. Looks like teensy ends up with another addon board for a PT8211 dac... At this price point an arduino due seems like maybe a better comparison. The Due has 16 analog inputs, 2 DACs, bluetooth, but no wifi, no sd card, and no amplifier. And of course it's a much larger form factor. Hm. It's a narrow niche - compact, battery, speaker amp, audio in/out, wireless - and you need to want at least half of those for this to really justify the price - but might be a good board when a pi is overkill. Even so, I just yesterday finished an esp8266 / max98357 build; yeah, wiring up the six pins on the max is not as convenient, but then again a d1 mini and the max are both less than $3 apiece, and $6 is a far cry from $50. (Note the max98357 is the same amplifier present on the sonatino).