Home >> Recreation >> Radio >> Amateur >> Boatanchors >> Headphones Trimm Headphones Offers tube type technology instead of solid state and digital electronics. Also includes classic and military radio pictures, and information. Scott's Crystal Radios Scott Balderson has a Headphone Museum and phones for sale. Also Crystal Radios and Test Equipment. 2000 Ohm Headphones 2000 Ohm Headphones in use by WB6FZH with his 1923 Parkin Crystal Radio. 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.
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