TPA3110D2 Class-D Audio Power Amplifiers Texas Instruments TPA3110D2 Class-D Audio Power Amplifiers with SpeakerGuard™ is efficient for driving bridged-tied stereo speakers in TVs and consumer audio equipment. The TI TPA3110D2 features advanced EMI suppression technology and speaker protection circuitry that includes an adjustable power limiter and a DC detection circuit. The TI TPA3110D2 amplifier can drive stereo speakers as low as 4Ω. The 90% efficiency of this TI amplifier eliminates the need for an external heat sink when playing music.