We have now added a tuner to the Voluum
And this is no ordinary tuner. It's super fast, lets you tune to 0.1cent precision and can easily tune a low-B on a bass; something most guitar tuners struggle to do.
Here's a quick promo video showing it off: https://www.youtube.com/watch?v=u_pHlGCKyd4
Get the latest firmware for the Voluum (version 1.3.0) here: http://www.sonuus.com/software.html