Hi !welcome to the forum :rolleyes:B. J2 is in finishing stage - final pcbs populated and I hope that I'll soon find some time to put them together with rest of mechanic parts ( PSU , heatsinks ) and listenI was thrilled with prototype ; just as information - my prototypes are always mono , where I'm trying concepts and changing things to make entire package better .... according to my needs and knowledge .when I'm ready - I make pcbs and eventually make final tuning of some part values ; it's anyway always needed changing actual physical layout of electrical circuit .I remember that I was thrilled , first time hearing notes from Babelfish J mono prototype ;also - I was pleased when I made first F5 ( that one was stereo) , in Ikebana style (point to point , rudimentary PSU ) ;but - I was stunned hearing first tune sung with mono Babelfish J2 prototype I hope it's helpful ;anyway - Generg will soon make his B. J2 , so you'll have another one , this time objective opinion .