I really need this too.
I use Hauptwerk with a USB interface as the sound card with an ASIO driver to get low-latency audio (a hard requirement when playing!)
My current interface is an AudioBox GO which works perfectly, except I need to be able to tailor the sound to my room and for this I need an EQ.
I bought a Revelator io24 under the mistaken impression that it had a DSP that could be used for this. But it turns out it only applies to the two analog inputs but not to the audio coming from the USB.
The Revelator io24 is going back for a refund, while in the interim I'll be investigating and looking for an Audiobox 22VSL, unless PreSonus can add this feature in a new firmware release.