TSDP11xx / TSDP10xx Headphone Amplifiers Tempo Semiconductor TSDP11xx / TSDP10xx Headphone Amplifiers are class-H capless DirectConnect™ technology amplifiers featuring 2Vrms ultra-low-power. These amplifiers provide independent left/right channel volume control, mute, and fine parameter adjustment via the two-wire I2C compatible serial interface. The TSDP11xx / TSDP10xx headphone amplifiers eliminate large output DC blocking capacitors, reduces board area, and also reduces component height and cost. These amplifiers enable full bass response without attenuation, offers no pop on start-up or power-down, and charge-pump allows for true ground centered outputs.