How Loud is the Distortion from Your Power Amplifier?
Would you put a Washing Machine in your Listening Room? If the answer is no, you may be surprised to discover that the distortion produced by your ...
Audio Application Notes
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Feed-Forward Error Correction
The Benchmark AHB2 power amplifier and HPA4 headphone amplifier both feature feed-forward error correction. This correction system is an important ...
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Relay-Controlled Volume - The Ultimate Solution for Analog Audio
Benchmark has introduced a new analog-to-analog volume control circuit that features a 256-step relay-controlled attenuator and a 16-step relay-con...
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Laboratory Use of the Benchmark AHB2 Power Amplifier
SEAS, a well-known manufacturer of high-quality loudspeakers, selected the Benchmark AHB2 as a key component for use in testing loudspeakers. They ...
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Interpreting THD Measurements - Think dB not Percent!
Distortion measurements (THD, THD+N and IMD) are traditionally expressed in terms of percent. But what do 1%, 0.1%, 0.01% or 0.001% mean in terms o...
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Intersample Overs in CD Recordings
Intersample Overs are a Common Occurrence in CD Recordings We have frequently used Steely Dan's Gaslighting Abbie from Two Against Nature in our li...
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A Look Inside the New ES9028PRO Converter Chip and the New DAC3
ES9028PRO D/A Converter Chip - Block Diagram and Test Report This application note examines the differences between the ES9018 and the new ES9028PR...
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Power Amplifiers - A "First Watt" ABX Test
In Benchmark's listening room we recently demonstrated the importance of the first watt using two 100 watt stereo power amplifiers. One amplifier...
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AHB2 Crossover Distortion Measurements
Crossover Distortion - Measurements The following measurements and scope photos demonstrate the effectiveness of the feedforward system in the AHB2...
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Amplifier Crossover Distortion
Crossover Distortion - Introduction Most audio power amplifiers suffer from a defect known as "crossover distortion". This distortion is particula...
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How Should I Buy an Audio System?
Two Distinct Types of Audio Products - Understand the Difference Before You Buy! Make your own choice! "Buying an audio product is much like buy...
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Will the HPA2 Drive My Headphones?
Benchmark DAC1 and DAC2 converters are equipped with Benchmark’s HPA2™ headphone power amplifier. This is a high-current design with very low outpu...
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The HPA2™ Headphone Power Amplifier
Why do I need a Power Amplifier to Drive My Headphones? Many Benchmark products include our HPA2™ headphone power amplifier. Unlike most headphone ...
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The AHB2 - A Radical Approach to Audio Power Amplification
Radical! The performance of the AHB2 would not have been achievable without taking a radical approach to power amplification. In many ways, the A...
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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...
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Why "Audio Goes to 11"
Intersample Overs - Part 2 In my last post, "Audio that Goes to 11", I made the bold assertion that most of our audio recordings contain peaks t...
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Audio That Goes to 11
Intersample Overs - Part 1 It's on your iPhone, your Android and your computer. It's even on those CDs you put on a shelf somewhere. Audio that ...
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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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