Gosh! This does look familiar ...

[Happy Jack]

https://www.ebay.co.uk/itm/224590283643?hash=item344a9fc37b:g:F8oAAOSwuklf0Qxa

 

That design really, really reminds me of something, now what was it?

 

[BigAlonBass]

I must be missing something, because it looks like a generic Power Amp to me. 

[Jean-Luc Pickguard]

Whatever it is, its a double-ended version.

[Happy Jack]

4 hours ago, BigAlonBass said:

I must be missing something, because it looks like a generic Power Amp to me. 

Have a look at the Powersoft range of top-end power amps, as used by most major venues.

[prowla]

It says it's a "Progressive class D power amplifier.", so it must be ideally suited to that genre.