english deutsch
2000 Ohm Headphones
2000 Ohm Headphones in use by WB6FZH with his 1923 Parkin Crystal Radio.
Ben Tongue, Crystal Radios
Blonder-Tongue man, Ben Tongue has written some useful articles on using headphones with crystal radios.
Scott's Crystal Radios
Scott Balderson has a Headphone Museum and phones for sale. Also Crystal Radios and Test Equipment.
The Crystal Set Radio Club
You have to JOIN first but then you will see the archives with a lot of useful data and discussions about hi-z headphones.
Trimm Headphones
Offers tube type technology instead of solid state and digital electronics. Also includes classic and military radio pictures, and information.