constant current sourcewhat is CCS and ltp
http://www.diyaudio.com/forums/pass-labs/195377-constant-current-source.html
and long tailed pair
http://www.diyaudio.com/forums/solid-state/193870-how-bias-long-tail-pair.html
http://www.diyaudio.com/forums/tubes-valves/160312-balance-ccs-long-tailed-pairs.html
Last edited: