Originally Posted by
StanleyB
headphones come in an impedance range that covers a 20 to 1 ratio. i.e. from 32 ohms to 600 ohms.
You are lucky, Stan, it's only 20:1!
What impedance would the phones have that I used with the crystal set radio I built when I was a boy? Over 1K?
In the late 1970s I owned a pair of supposedly HiFi Headphones by Pioneer that had piezo-electric transducers - how would they load an amp?
Brian
In Southampton: Raspberry Pi 4 running PiCorePlayer, Beresford Caiman SEG, Quad 77 Int Amp and CD Player, AVI Neutron 4, Sennheiser HD25 headphones.
In Nicosia: Small Format HTPC, Beresford 7520 ,Quad 405-2, Quart 980s German Tower Loudspeakers.