What this Class AB stereo amplifier delivers
The Maxim Integrated MAX9761ETI is a Class AB stereo audio power amplifier that integrates a 2-channel (stereo) speaker amplifier with a separate stereo headphone output in a single 28-TQFN (5x5 mm) package.
The 3W x 2 @ 3Ω output rating is the headline number that drives the speaker selection and power budget. Into a typical 4Ω or 8Ω speaker, the available power will be lower — the 3Ω spec tells you the amplifier is designed for low-impedance loads where current delivery matters. If your BOM calls for 8Ω tweeters, expect roughly 1.5W to 2W per channel, which is still adequate for near-field listening in a desktop or portable product. The Class AB topology keeps crossover distortion low, which matters for audio clarity in voice and music applications where a Class D amplifier's switching artifacts could be audible.