12/8/2023 0 Comments Benchmark ahb2 power amp![]() The AHB2, with both channels driven, can also deliver 190W / channel into 4 Ω, and 380 W into an 8-Ω operating bridged mono. The entire package measures 11” × 4” × 9.5” and weighs 12.5 lb. The power output rating of Benchmark’s new stereo power amplifier, belies its size and weight at 100W / channel into 8 Ω. High-end power amplifiers are large and heavy, with massive power transformers, heatsinks, and large power supply filter capacitors.Class-AB operation of the output stage is a minimum requirement for high-end sound, but Class A is preferred (generating the greatest amount of heat).High-efficiency invariably means inferior performance. The best audio power amplifiers are inefficient and generate lots of heat.The AHB2 challenges several established “conventions” regarding power amplifier design including: Indeed, Benchmark’s new power amplifier is arguably the most innovative product the company has produced to date. This is a fitting tribute, since the AHB2 continues the Burdick legacy of technical innovation. Burdick, who founded Benchmark Media Systems back in 1983 and passed away in 2013. ![]() It is an American firm that designs and manufacturers all its products at its Syracuse, NY, facility. < 0.Benchmark Media Systems is a company that has successfully bridged the professional and audiophile worlds. This Benchmark product was designed, assembled, and tested in the USA using USA and imported components. The result is an amplifier that stands head and shoulders above the competition.ĭESIGNED, ASSEMBLED, AND TESTED IN THE USA In our quest to build the ultimate amplifier, we also focused on frequency response, output noise, drive current, damping factor, and reliability. The AHB2 produces almost no measurable distortion at any rated load condition. In contrast, the feed-forward error correction system in the AHB2 keeps the output clean when driving difficult loads. Most power amplifiers produce higher levels of distortion when the load impedance decreases. Stereo loads as low as 1.4 Ohms can be cleanly driven to full output levels. The AHB2 drives difficult phase angles and low impedances with ease. Many loudspeakers have frequencies at which their impedance drops to levels that are much lower than the "nominal" impedance. No other audio amplifier comes close to delivering the clean, quiet, and robust power of the AHB2.ĭIFFICULT SPEAKER LOADS ARE HANDLED WITH EASE This technology uses feed-forward error correction to eliminate the distortion that is normally produced by the output stage. The AHB2 uses the new and revolutionary THX-patented AAA™ technology to virtually eliminate all forms of distortion. This was exactly the technology we needed to build our new amplifier. In our search, we learned of two new patents on a new amplifier technology from THX. We had to look beyond existing amplifier technologies and explore some new and radical solutions. Benchmark set out to solve this problem by creating an amplifier that matches the performance of the DAC3. Until now, this meant that the DAC3 could not be fully appreciated. ![]() For example, the noise and distortion produced by the Benchmark DAC3 D/A converter is 20 to 30 dB lower than that produced by most high-quality power amplifiers. This means that the power amplifier has become a limiting factor in many audio systems. In contrast, the revolutionary AHB2 was specifically designed to deliver true high-resolution performance.įULFILLING THE NEED FOR BETTER AMPLIFICATIONĭ/A conversion technology has outpaced the development of new power amplifiers. Most power amplifiers are well matched to the limitations of the CD format, but they fall well short of the capabilities of high-resolution formats. Power amplifiers are a weak link in most audio systems. The musical details and emotion captured on today's finest High-Resolution-Audio recordings can only be fully appreciated when every component in the signal chain is capable of true high-resolution performance. With the AHB2, you will discover previously overlooked nuances, dynamics, and detail in your favorite recordings and experience the full potential of the latest high-resolution 24-bit PCM and 1-bit DSD audio formats. The frequency response of the AHB2 extends beyond 200 kHz. The dynamic range of the AHB2 is 132 dB, making it 10 to 30 dB quieter than some of the very best reference-quality power amplifiers. Benchmark's AHB2 power amplifier delivers musical details without introducing the masking effects of amplifier noise and distortion. The AHB2 is the ideal match to the performance limits of High-Resolution-Audio (HRA) formats.
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