Live Video Tutorials
Feed-Forward Correction Explained!
Feed-Forward Error Correction
Don't look back, the future is here!
Benchmark's AHB2 power amplifier has a unique feedforward error correction system that cancels distortion before it reaches the speaker terminals. In contrast, global feedback systems attempt to correct the distortion after it reaches the speaker terminals.
Feed-forward correction is fast, precise, and inherently stable.
Benchmark's AHB2 blends feedback with feed-forward correction to leverage the best characteristics of each.
Listen to Gene and John as they discuss this revolutionary technology.
- How does the feed-forward system know what correction to send?
- Does it predict the future?
- What makes feedback unstable when driving capacitive loads?
- Why is feed-forward stable when driving capacitive loads?
Take a few minutes to learn how feed-forward error correction works:
- Watch as John provides an easy-to-understand analogy for feed-forward error correction.
- Join the discussion.
- We reserve the right to limit negative feedback.
Benchmark Discusses What Makes a Good Preamp
An Impossible Engineering Task?
Our goal was to produce an analog volume control with the highest achievable transparency. We wanted to be able to place this volume control in front of our AHB2 power amplifier or in front of our THX-888 headphone amplifier without diminishing the performance of either device.
Our volume control would need to have lower distortion and lower noise than either of these amplifiers. Given the extraordinary performance of these THX-AAA amplifiers, this would not be an easy task!
Our unique solution is a fully-balanced, low-impedance, relay-controlled attenuator with over 256 steps. Nothing like this was ever built, and nothing else matches the performance of the Benchmark analog volume control system used in the LA4 and HPA4 products.
The LA4 is not Just a "Good Preamp"
The LA4 was an all-out effort to build the best line-level preamplifier on the planet.
"Benchmark's LA4 is the widest-bandwidth, widest-dynamic-range, lowest-noise, lowest-distortion preamplifier I have encountered." - John Atkinson
Watch as Benchmark's lead Engineer, John Siau, takes us on a deep dive into the relay-controlled preamplifiers inside Benchmark's LA4 and HPA4.
Benchmark AHB2: A Radically Different Power Amplifier
The AHB2 - A Radical Approach to Audio Power Amplification
Benchmark's AHB2 Power Amplifier is radically different from every other audio power amplifier on the market. It delivers the lowest distortion and lowest noise of any commercially available power amplifier. The THD+N and SNR specifications are 20 dB better than many high-end hi-fi power amplifiers. The unique high-efficiency design delivers hundreds of watts from a relatively small, passively cooled chassis.
Benchmark's lead Engineer, John Siau, will take us on a deep dive into the AHB2. You may be shocked by what is inside!
Benchmark Media Virtual Press Event
An Introduction to Benchmark
John Siau, VP and Director of Engineering, gives us an overview of his company, their design philosophy, and the pioneering products Benchmark offers for high-performance audio.
Benchmark Media, founded in 1983, has a rich history of innovation in the audio industry. Initially specializing in broadcast equipment, the company transitioned to high-end audio products in the early 2000s. Their commitment to engineering excellence has resulted in numerous accolades and a reputation for creating some of the most accurate and reliable audio equipment available.
John discusses some of Benchmark's key products, including the AHB2 power amplifier, LA4 preamp, DAC3, HPA4 headphone amp, and Studio&Stage(TM) audio cables. These products exemplify Benchmark's dedication to pushing the boundaries of audio performance, making them a favorite among audiophiles and professionals alike.