Powersoft K3 vs Digam 7000 on subs

Hello friends, what do you think about K3 vs Digam 7000 on subs 2 ohms stereo, I have 4 powersoft digam 7000 many years running 2x dual 18 B&C 18 TBX100 indo each Chanel of the Digam7000 and I am very happy with it.. good headroom no issues or overheating.. I think that Old Digam7000 are kind a work horses! They are still working over the years almost 20 years! And the only issue is the rusting chassi..

I have no experience with these amps but based on the specs alone it would seem to me the K3 is designed more to survive 2ohm operation that excel at it. That may or may not produce a noticable performance difference but I suspect it would and you would probably prefer how the Digam performs. 

Or get a bigger K series if you can, or stretch to a T series for the latest processing and features.