Don't Blame the Headphones!
Headphones Sounding Bad? It Could be Your Headphone Amplifier! It is easy to build a headphone amplifier that produces sound. It is an entirely di...
Audio Application Notes
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The CE Mark - A Photo-Tour of Immunity Testing
Testing for Immunity to Interference Most people have seen the CE mark on electronic equipment, but few have had the opportunity to witness the ...
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The CE Mark - What Does it Mean, and Why Should I Care?
Why is the CE Mark Important? Many electronic products have a "CE" mark affixed to the product. This mark is mandatory in European markets, but i...
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Headphone Impedance and Sensitivity
Is headphone impedance important? What is headphone sensitivity? Which headphones will work best with my new headphone amplifier? Which hea...
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What is High-Resolution Audio? - Part 2
Is there Life Beyond 20 kHz? High-Resolution Audio systems offer the promise of an extended high-frequency range. High-Resolution digital systems n...
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What is High-Resolution Audio? - Part 1
Eliminate the Noise! There is a raging debate over the definition of "High-Resolution Audio". The focus of this debate has been misdirected by a lo...
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Headphone Amplifiers - Part 2
It's all about control! - Headphone Output Impedance The movement of headphone transducers must be well controlled in order to produce high-quality...
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Headphone Amplifiers - Part 1
Headphones do not Behave Like a Resistor - Beware of Misleading Specifications! A couple years ago, some of us at Benchmark noticed a weird discre...
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An Examination of Headphone Amplifier Performance Specifications
Headphone Amplifier Whitepaper Recording Engineers and Audiophiles often distrust audio measurements and specifications. It is not uncommon to he...
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Volume Control Technologies
Fix the Weakest Link in the Audio Chain! A playback system's volume control is often one of the weakest links in the audio chain. This is especiall...
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The "0-Ohm" Headphone Amplifier
An Introduction to "The 0-Ohm Headphone Amplifier" White Paper The circuits used to drive headphones are often added to a product without careful c...
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A Clean Audio Installation Guide™
Benchmark's "Clean Audio Installation Guide™" "Required Reading!" By Allen H. Burdick This 24 page guide has been very popular. It has been haile...
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Building an Audio MicroScope™
By Allen H. Burdick Two inexpensive jack-mounted products from Benchmark Media Systems can be assembled into a very powerful test set we call The A...
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Building the L-R Null Test Set
By Allen H. Burdick In the process of broadcast matrix encoding and decoding, balancing amplitudes between the two channels of a stereo audio path ...
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Using the HPA-1 as a Long-Lines Driver
By Allen H. Burdick The high current output configuration of the HPA-1 is ideal for use as a transformerless long lines driver. Conversion of the u...
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When is a DA not a DA?
The Role of an Audio Distribution Amplifier in Professional Audio Systems Let's face it, an Audio Distribution Amplifier (DA) is not absolutely nec...
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Voltage Transmission for Audio Systems
By Richard L. Hess, Audio-Video Systems Engineer, American Broadcasting Company, New York City "The benefits of using a voltage audio transmission ...
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