They may very well sound pretty good, but this is some pretty wild marketing:
"The Onyx 1220, 1620 and 1640 start with Mackie's new Onyx mic preamps, which meet or surpass just about any standalone mic preamp on the market in terms of pure fidelity and head-room (and yes, there are specs to prove it). Next up is the completely new Perkins EQ circuitry, a "neo classic" 3- and 4-band design which gives you the sweet musicality of British EQ with greater filter control and minimum phase shift (plus a true hardware EQ bypass). This analog brilliance is paired with a full-featured discrete Auxiliary section, a completely redesigned mix bus and summing amp section, and a built-in Talkback section with onboard mic"
