two amps, one set of speakers?

Kind of a hokey way to bi-amplify a set of speakers.  If you were serious about bi-amplification, I would use a Port driving two amplifiers.   

Thanks for the reply.  In your suggestion I would still have two amplifiers driving my speakers. Why is my arrangement considered hokey to you?

“Measurable” and “Audible” are two different characteristics and “best” depends on each listener’s opinion. In some listening trials the inferior measuring system sounds better than the superior measuring system.

It’s a very difficult measurement, but the “best” approach would usually be a PORT, an active crossover, and separate 3rd party amplifiers for left and right lows and highs. This approach will minimize intermodulation distortion.

Another approach that some use is “bi-wiring”. Here separate wires are run from the amplifier to low and high terminals on the speaker. Obviously, bi-wiring is cheaper than bi-amplification. Sonic benefits are hotly debated.

Because you would need to group the two Amps, which is a dynamic process which would not survive things like updates or reboots.  It would also be subject to being out of balance due to two separate volume controls.  Better to have a single source driving a Port and two external amplifiers.

With your scheme you would need to Group the two AMP’s. Time alignment between Grouped players is within a couple milliseconds. From time to time each member of the Group’s delivery will be adjusted in order to work around varying local network conditions. Each user’s sensitivity to these adjustments is different, most users will not notice the adjustments because the timing is similar to L/R time differences resulting from simple body movements. If there are time variations between lows and highs, the imaging characteristics of each speaker will change. Again, user sensitivity varies.

It just isn’t worth the bother, now that the Sonos Amp has enough grunt in terms of deliverable power. Unless you love tinkering for its own sake.

Thanks guys, super helpful. I'm going to put this idea on pause. 🤔

You will be better served by using speaker wire of the correct copper core thickness for the length of the speaker cable run, and making sure that cable terminations are well done.

To some, attempting to differentiate between amplifiers is as silly as The Princess and the Pea story. Other listeners can demonstrate that they differentiate between amplifiers.

I classify this as “cheap” and “expensive” listeners. It is possible to satisfy a “cheap” listener. An “expensive” listener is not likely to ever be satisfied. Probably the “cheap” listener sleeps better at night.

My way would be to classify listeners between those that listen to music for what it is, and those that use it as a test signal as part of a different hobby. I can’t speak to sleeping better, but the first lot enjoys the music more than the second, I warrant.