I’ve been using a pair of D-Sonic M3-600-M monoblocks
BTW Look at your D-Sonic M3-600-M monoblock Class-D modules
https://cdn11.bigcommerce.com/s-piqyzidq4i/images/stencil/1000x1000/products/122/432/M3a-1500M_Top_I...
and compare them to the Chinese Sanway/pascal modules
https://image.made-in-china.com/202f0j00nCGQFEOLEdzb/Professional-Line-Array-Audio-Speaker-Digital-A...
and here
https://cnsanway.en.made-in-china.com/product/JXPQnMZEIrWR/China-Digital-DSP-Amplifier-Module-for-Ac...
Also use in the Rowland Continuum 2 pics and Sanway pics I showed here.
https://forum.audiogon.com/posts/1684946
Like I said these modules were available for $100 each in lots of 10 on Alibaba