Break the sonic veil with creamy distortion the more you pump the volume. The muffled screams of the speaker from the grill gives a unique sound that's especially pleasing at max setting. Gray HVAC Grill, aluminum body with rubber feet. 2” 8 ohm speaker, single power / volume knob operation. Powered by a 9V battery, accessed by unscrewing the back plate (very long battery life). ¼” input.

Video Demo:
https://youtu.be/TVOFxjNFhG4