On 11-Aug-98, BuDWeiSeR wrote: >In general, reffering to the EMS filter design VCF-6A, could BC547 and >548s be used instead of the 2n3904 and 2n3906? The transistors used are >harder to obtain at local electronic stores here in Australia... any gen purpose npn/pnp should work. ie 2sc945/2sa733. -tg