Wyred 4 Sound Class D Mono blocks SX 1000 question

These Amps are from the year 2011. Although they sound good I am wondering if they are obsolete ?

rocky131308-01-2018 9:55pm

stereo5 Details Discussions Posts This discussion Message User 6,504 posts 08-02-2018 at 12:16am Copy Comment URL Report Comment Edit Delete Why do you think they may be obsolete?