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In the case of the extremely high-end electrostatic headphones, such as the Stax SR-007, a specialized electrostatic headphone amplifier or transformer step-up box and power amplifier is required to use the headphones, as only a dedicated electrostatic headphone amplifier or transformer can provide the voltage levels necessary to drive the ...
In digital and analog audio, headroom refers to the amount by which the signal-handling capabilities of an audio system can exceed a designated nominal level. [1] Headroom can be thought of as a safety zone allowing transient audio peaks to exceed the nominal level without damaging the system or the audio signal, e.g., via clipping. Standards ...
On June 10, 2014, Kevin Hayes was issued U.S. Patent 8,749,310 for "amplifier bias control". This patent covers the only known technique for observing the true underlying quiescent current (idle current) of an output tube (or transistor) under dynamic signal conditions, and then holding it to the stable target value with a precision of 99% or ...
The amount of gain produced surprised both men, and Smith combined the cascaded design with the small form factor of the Fender Princeton, creating the first high-gain amp, the "Princeton Boogie." [1] [8] Released in 1972, the Boogies solved the issue of amps not having enough gain to sustain notes at volumes suitable for smaller venues. [4]
Dumble, however, was not interested in selling amplifiers in greater numbers, but focused solely on getting the best possible sound. Building to order only (even building his own speaker cabinets by hand), his amps gained a positive reputation and became highly sought after by professional musicians. Dumble became known as a tube electronics ...
The DSL line does have a 6 button footswitch that can be purchased that allows switching between channels and modes for each channel. The JCM 2000 was touted as the best Marshall ever, with a question mark in the ads in various publications. They followed the 100W and 50W heads with the DSL401(40W) and 201(20W) combos, also with channel switching.
The major advantage of a class-D amplifier is that it can be more efficient than a linear amplifier by dissipating less power as heat in the active devices. Given that large heat sinks are not required, class-D amplifiers are much lighter weight than class-A, -B, or -AB amplifiers, an important consideration with portable sound reinforcement ...
The dark area is placed over a scene's high-intensity region, such as the sky. The result is more even exposure in the focal plane, with increased detail in the shadows and low-light areas. Though this does not increase the fixed dynamic range available at the film or sensor, it stretches usable dynamic range in practice. [55]