I was pleasantly surprised with my sound. The speakers are clear and loud. i recently was painting the whole interior of a house and I just set the Triumph up in the center of the house, turned on internet radio and was able to easily listen to the phone from everywhere in the house. On the flip side, i also had it outside on top of my caer as I worked on the engine with the hood up and it wasn't loud enough so I plugged it into the AUX jack on my car stereo. but that was outside.
I use a pair of Phillips Marshmallow ear buds and the sound, again, is clear and loud. Using my IOGear Bluetooth headphones sounds just as good. But using my Samsung HM1610 Bluetooth headset, it doesn't seem to get as loud. But that might be because it's only going in one ear.
Overall, it's been performing well for what I need.