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These amplifiers come in very handy for those electronic projects such as something that requires an amplifier such as IC radio, Crystal Radio receiver project, or a VLF natural radio receiver or something like a lightning detector. You can do other things that with the amplifier that can save your time and extra parts such as a audio amplifier. You can even use this amplifier with those crystal set radio kits when you cannot hear anything coming out those crystal high impedance earphones, which means it will really help you confirm that you crystal set radio is working or not. A great time saver for crystal set radio builders.
Verified purchase: Yes | Condition: New
Great little amplifier, Increases the sound from my vintage 2 transistor radios, and crystal sets real good.
Verified purchase: Yes | Condition: Pre-owned
That little amp help me to find the problem with audio on my Akai GX 635D. Great product, it save me about $350.00 dollar's in repair.
Verified purchase: Yes | Condition: New
Works great with old, antique crystal radios
Verified purchase: Yes | Condition: New
Is a great product would buy again
Verified purchase: Yes | Condition: Pre-owned