It is that time again! SparkFun Electronics will be closed Friday, January 13th for our annual inventory day. Please keep in mind that any orders placed after 2PM (Mountain Time) on Thursday, January 12th will not ship or be prepared for local pickup until we open for normal operations on Monday, January 16th. In addition, tours will resume on Friday, January 20th. Thank you for your patience!


Member Since: July 9, 2006

Country: United States



I’m an Audio / Electronics engineer.

Spoken Languages

Sanskrit, Cuneiform, Braille

Programming Languages

C++, Processing & Arduino


Audio Engineering Society


University of Hartford ‘11


Audio, EET


Audio equipment, general electronic gadgetry…



  • Proton?

  • Is it safe to assume the Teensy 3.1 could handle driving this?

  • Thanks Mike! I should learn by now not to underestimate the peculiarities of working with class D amps. But the ADC option sounds promising - I’m not looking for super high fidelity, so maybe even a µC ADC would do the trick! And don’t worry, I haven’t forgotten my Nyquist theorem! I’d just have to figure out how to get a reasonably fast sampling rate out of an Arduino or something…I’m hoping to avoid a standalone ADC.

  • This is probably a stupid question, but could I take the PWM output of this amp (with suitably reduced gain, as needed) and feed it directly to an XBee >> XBee >> Speaker type setup, or (ignoring other probable issues) are the XBee data rates too slow?

  • The datasheet mentions these are useful for audio signal switching, but the ~3v supply maximum definitely limits your useable signal level. Is there any way around that without sacrificing audio quality? Or is there perhaps a similar IC with a higher V+ rating?

  • Would this be capable of driving a pair of headphones? Nothing massive, but probably in the usual 16-32 ohm range. And yes, mono is fine…

  • You’re also paying for the fancy cardboard box. So, think of it as a $2.25 dispenser I guess?

  • I may be oversimplifying the issue(s) here, but how about this?

    That way you get to keep your spiffy gear logo, and resemble but be legally distinct from OSI, to paraphrase a certain popular cartoon series.

  • That’s awesome - I second this.

  • So, I’m envisioning hooking the RGB pins up to PWM outputs on an Arduino (i.e., one each) to do a bit of color mixing. What I’m wondering is if I could then stick a pot, namely COM-11173, between GND and pin 15 of the LCD to get a sort of rudimentary ‘master’ brightness control. Any thoughts?

No public wish lists :(