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The high impedance of the earpiece means that any audio-range signal applied to the tip of the connector will be heard in the earpiece. This quick-and-dirty technique can remove the need for setting up and probing with an oscilloscope or connecting an amplifier to the test point in the first instance.
Higher impedance headphones are more tolerant of amplifier limitations, but produce less volume for a given output level. Historically, many headphones had relatively high impedance, often over 500 ohms so they could operate well with high-impedance tube amplifiers. In contrast, modern transistor amplifiers can have very low output impedance ...
These Sony headphones sell out every Prime Day, but they're still in stock and on sale for one more day: 'The battery lasts forever!' Moriba Cummings October 11, 2023 at 5:29 AM
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These Noise-Cancelling Headphones Are All on Sale for Black Friday: Bose, Sony, Apple and More. Rudie Obias. November 29, 2024 at 3:11 PM.
In analog circuits a high impedance node is one that does not have any low impedance paths to any other nodes in the frequency range being considered.Since the terms low and high depend on context to some extent, it is possible in principle for some high impedance nodes to be described as low impedance in one context, and high impedance in another; so the node (perhaps a signal source or ...