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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Secrets Q&A with John Siau of Benchmark Media Systems
Secrets contributor Sumit Chawla recently caught up with Benchmark’s VP and Chief Designer, John Siau to get a little more in-depth on several subj...
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Listening vs. Measuring
At Benchmark, listening is the final exam that determines if a design passes from engineering to production. When all of the measurements show that...
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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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Balanced vs. Unbalanced Analog Interfaces
For analog audio, balanced XLR interfaces are vastly superior to unbalanced RCA interfaces. If you look at the back of any Benchmark product, you w...
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Relay-Controlled Volume - The Ultimate Solution for Analog Audio
Benchmark has introduced a new analog volume control circuit that features a 256-step relay-controlled attenuator and a 16-step relay-controlled bo...
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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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AHB2 Tri-Amp Setup - Ellery Coffman
The following photos and system descriptions were provided to us by one of our customers, Ellery Coffman. He has put together an amazing system and...
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Speaker Sensitivity and Amplifier Power
Speaker sensitivity is a measure of how loud a speaker will play at a given input power or at a given input voltage. Sensitivity is normally measur...
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Audio Myths - The Ultimate "Myth Buster" Video - Monty Montgomery, Xiph.Org
Monty Montgomery takes us into the lab and uses a series of simple demonstrations to bust some very common myths about digital audio. Test your kno...
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A Look Inside the New ES9028PRO Converter Chip and the New DAC3
This application note examines the differences between the ES9018 and the new ES9028PRO. It also compares the Benchmark DAC2 and DAC3 to demonstrat...
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Calculating the Performance of an Amplifier-Speaker Combination
In this application note we calculate the maximum output level and noise level produced by an amplifier/loudspeaker combination. Use this example f...
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Power Amplifiers - A "First Watt" ABX Test
Using a double-blind ABX test, we verified that there was a clearly audible difference between two amplifiers at an output level of just 0.01 watt.
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Inside the DAC2 - Part 3 - Power Supplies
The Benchmark DAC2 is an audio digital-to-analog converter. This application note explains the power supply configuration inside Benchmark's DAC2 D...
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Inside the DAC2 - Part 2 - Digital Processing
The Benchmark DAC2 is an audio digital-to-analog converter. This application note explains the proprietary digital processing inside Benchmark's DA...
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Inside the DAC2 - Part 1 - Analog Processing
The DAC2 is an audio digital-to-analog converter. Most people focus on the word "digital" and assume that all of the "magic" happens in the digital...
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The PLL in your D/A Can Taint A/B Listening Tests!
A/B and A/B/X listening tests are important methods of comparing two audio sources or two audio components. In the studio an engineer may want to s...
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