With higher power and hi-fidelity output than smartphones, the A1 satisfies your need for more sound quality and quantity
The A1's volume buttons are made of Alps microswitches for sensitive and reliable operation
The A1 provides Flat, Bass1, Bass2, and Bass3 EQ modes, switchable simply by briefly pressing the power button, Three-Color Status LED
Frequency response of 20 Hz to 20 kHz
