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T O P I C    R E V I E W rhr9 Posted - 2007/12/15 : 17:23:05 Hi there , This is my first post in this section , and I want to present my OTA using just one IRF150 per chanel ,working in class A. Each chanel has its own power supply . [URL=http://imageshack.us][/URL] [URL=http://imageshack.us][/URL] [URL=http://imageshack.us][/URL] [URL=http://imageshack.us][/URL] The initial topic is here : http://www.diyaudio.com/forums/showthread.php?s=e2f493a586a0883010b6e2b8eb93b548&threadid=73598 Did anybody else build this amp ? Best wishes ! @ + Philippe. 6   L A T E S T    R E P L I E S    (Newest First) rhr9 Posted - 2007/12/16 : 10:33:37 Thanks for all your appreciations ! This amplifier doesn' t use any feedback . It has got a bias current of 3 Amp . The sound getting out of the IRF150 is very realistic , very dynamic , as if you could touch each instrument that you listen to . It isn' t a version of Jean Hiraga's 8W Monster . I am going to build it also , on a battery version . On the Monster Amp , there are 8 transistors per chanel . @ + Philippe. CarlssonH Posted - 2007/12/16 : 10:04:22 Is this a version of "The Monster" designed by Jean Hiraga? Anyway, it really is a beauty ohmega Posted - 2007/12/16 : 07:12:42 Philippe: Wow..love it....built like a tank.. Micke Y Posted - 2007/12/15 : 21:17:52 Very nice amplifier, very good with MY speakers . What kind of effect do you get out of that transistor? Do you use feedback? Michael rhr9 Posted - 2007/12/15 : 18:28:54 Hi Bernt , It sounds lovely on my FE208 Fostex Full range drivers ( 98 dB ) . I am using a tube preamp to drive properly the OTA . @ + Philippe. Bernt Jansson Posted - 2007/12/15 : 18:10:10 Nice work!!! How´s the sound?

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