PURIFI Audio - Build your own PURIFI Eigentakt amplifier.... | Facebook
Exploring Purifi Woofer Speaker Builds | diyAudio
DIY Speaker with Purifi 6.5" Woofer | DIY Audio Projects
PURIFI finally did a fully purified passive speaker design! The SPK 16 prototype is here - with a PTT tweeter | Page 4 | Audio Science Review (ASR) Forum