What the output power ratings mean for your speaker load
The MAX9709ETN+D delivers 50 W into a 4 Ω load in mono mode, or 29 W per channel into 8 Ω in stereo mode — the power splits cleanly between the two configurations without external jumper changes.
Package and board-fit — 56-TQFN with exposed pad
The Tube packaging means the ICs are shipped in anti-static tubes, not tape-and-reel, which matters for pick-and-place feeders that expect embossed carrier tape — plan for tube-to-reel transfer or hand-loading.
Built-in protection and signal conditioning
On-chip features include depop circuitry (eliminates power-on/off clicks), differential inputs for noise rejection, mute, shutdown, and short-circuit plus thermal protection — the amplifier handles fault conditions without external clamp diodes.