This high-impedance headphone circuit was found in a 1990s William Sheets. The power is low, but the high input impedance makes it useful for radio applications.
This circuit is part of a sound system project published in the October 1970 issue of Radio...
This circuit is from the National Semiconductor Audio Handbook, as it uses an audio power...
May 2017 - The new 36V TLVx171 Series of General Purpose Operational Amplifiers from Texas...