To realize my future plan to drive every JBL in my house with Pass Amps another pair of monos was neccessary.
This time I build something in between the XA100 and XA160.
Optimized to 4 Ohm load and providing 160 watts then.
Massive heatsinking was neccessary.
The sound is incredible. A bit more open and wide than the Aleph 2 but still soft and smooth.