You can either use a high impedance to low transformer for the D104 mike, or get one of the D104 "amplified" mikes which has a impedance converting transistor circuit in its base, able to drive low impedance modern microphone inputs.
The crystal high impedance element of the 104 needs to look into a high impedance to avoid altering the tone response. It will sound good, if properly terminated into the right circuit. Stuart K5KVH _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com