I should have been clearer in my terminology when discussing the AI Coda "amp" I own. It's a combo amp, with an integrated/non-removeable head. The shortcomings I referred to undoubtedly have more to do with the cabinet/speaker portion of the combo than the head.One of my peers used a stereo AI Clarus head driving an EA NL210. I thought it worked really well with upright, bass guitar, and Kala U-Bass. This rig was used for concert band, big band, jazz combo, cover band, etc.
However since AI and EA are out of business, I don't recommend them.