There were very few power amps that could drive into 1 ohm back in the day. They included the Adcom GFA-555, and Classe DR3 and DR3 VHC. the rare Belles 'A', the Krell KSA 80 and 100 and a couple more. The original speaker review by Cordesman in Stereophile details the requirements.
Apogee Scintilla Power
I know this is an old topic but here in 2019 has anyone come across any “new” ideas for driving Scintilla 1 ohm’s? Just looking for some options. The obvious ones i know/heard of are old Krell, H2O, Lamm (big money) and some pretty wild european amps? I currently have a pair of Sunfire 300’s (with Scintilla mod) that actually sound pretty good and it is amazing what Bob Carver achieved here but looking for the next step. Thanks for any ideas. No need telling me to sell my Scintilla’s.....:). I am all in and really do like the Apogee stuff. Maybe its nostalgic or the journey. Thanks very much.