I take it that you meant getting another AHB2, and run each in bridged mono? That would give you 500W on tap.

( "Bi-amp" usually refers to using one amp for the low frequency drivers and another for the mid- and high-frequency drivers. I don't think much of that.)
Since you've been a member since 2023, I'm sure that you have seen the reviews of both the AHB2 and the Revel ... right?
Back in 2019, I
reviewed the Benchmark AHB2 Stereo Amplifier. I received a second sample from a kind member to update the measurements. Originally the AHB2 cost $3000 but now, $3,500.
As you see, it is a compact but very nice looking amplifier. I appreciate the clipping indicator which seemed accurate in testing. Back panel shows both SpeakOn and traditional binding posts:
In my original testing, I used the SpeakOn connectors as that gave...
This is a review and detailed measurements of the Revel F228Be floor-standing speaker. This speaker was purchased new and drop shipped to me for testing. Alas, the customer can no longer afford them so if you are interested, let me know. The retail cost US $5,000 each but discounts have become common with Revel speakers.
NOTE: our company, Madrona Digital is a dealer for Harman products including Revel. While we don't do any retail business, I think it is fair for you to be on notice that there can be conflict of interest here. Feel free to read as much bias as you like...
There is also a current thread on the AHB2 that you might find interesting.
I may be mistaken it looks like this highly praised amp uses the same technology as the old Soundcrafsmen and some Carver amps.