TAS2563 Class-D Audio Amplifiers Texas Instruments TAS2563 Class-D Audio Amplifiers are optimized to efficiently drive high peak power into small loudspeaker applications. The TAS2563 features 6.1W of peak power into a 4Ω load at a battery voltage of 3.6V and supports boost bypass mode (external PVDD mode), where it can achieve 12W at 10% THD+N (4Ω at 12V). Devices can share a common bus via I2S/TDM + I2C interfaces.