Here's the latest list.
Running 4ch at 4ohms, Class D unless otherwise noted:
Hertz HDP4 (150w) --- 100Hz @ 4Ω THD .08%---$449
Alpine PDX-F6 (150w)---0.05% THD+N @ rated power--- $470
JL Audio XD400/4v2 (75w) --- @ 2 Ohm THD 1%---$430
Zed Draconia (175w)--- 4 ohm 20Hz-20KHz--- From...