I concur! Please share some wisdom.

Many of our decisions were based on what we had driver compatibility for. Software ALWAYS took a lot longer to get right at Sonos than hardware, largely because of the huge number of internal and external compatibilities we were required to maintain.

We had a working amp + DAC signal chain with the TPA series, so we reused that. We also had working wifi drivers with the MT7613. Much of my job was convincing the RF people that they didn't need to break out all the RF chains, which would have tipped the product into unprofitable territory.

A lot of the design decisions were based on hardware cost and speed of development. We reused a lot of subcircuits we'd previously validated on other designs.

Not really - specs and sound wise, it's not any different from any other integrated class D analog input amp. Pretty run of the mill THD and SNR specs.

It also has one hell of a startup transient. It was not a fun exercise to get that passing startup click/pop requirements. I said some words about TI in anger while bench testing.