diyAudio Forums Archive > Top > Amplifiers > Solid State sds headphone amp - Click HERE for Original Thread rwagter I'm having trouble finding rfp15n05 and rfp15p05 MOSFET's, in the Netherlands. Anyone have a good alternative with the same specs???? gromanswe I hope it can help http://www.headwize.com/projects/sh...kes_add_prj.htm groman tried to be helpful gromanswe I searched Headwize "DIY Workshop" Forum for "SDS mosfets" Here is the resulting page: http://headwize.powerpill.org/ubb/s...ch=SDS;mosfets; groman at his workshop in DIYaudio.com FBJ I don't know if this can help but Mouser has the FETs you looking for 511-RFP15P05 and 511-RFP15N05L listed in the No.608 catalog. Also Allied Electronics has them too, RFP15P05 = 263-2066 and RFP15N05L = 263-2063. :cool: Zappa I have built the SDS Labs headphone amp using Int'l Rectifier IRF620 and IRF9620 with great success. IRF610 and 9610 could be a better pick but the '20 works like heaven in my amp. Mosfets available at digi-key.com. I drive a pair of low impedance Grados with it and the amp is dead quiet on idle, have great dynamics and precison. And yes, you should really put some resistance (I put 221 ohms) in series with the gate of each mosfet or the amp may oscillate. If in trouble, post again!

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