Yes, the ONYX amps do rated and in most cases, more then the specs reveal.The ONYX are the Discus replacements but we have made upgrades and board lay out changes to improve THD & N, changes to better improve efficiency, thermal balance for concistant power through out the extreme temperature ranges caused by mounting locations and geographical locations.
The pre-amp has gone through a few minor changes to improve the linearity of the potentiometers and reduced THD & N.
There are also the obvious cosmetic changes as well.