Even the $99,000 Apex is bested, in linearity into load. Given the Stereophile measurements, you are more likely to have reduced bass in a difficult to drive speaker in the M33 than the AHB2. If you have difficult effect load, clearly the AHB2 will perform better despite the AHB2 maximum DF is 350 and the M22 spec is >800. Into 2 Ohms, the M33 is down 0.65 dB at 20Hz and 0.85 at 20kHz. The M33 stated output impedance is 0.08 at 20Hz and 0.1 at 20kHz. Stereophile has measured the NAD M33 integrated amp ($4999). If you want to look for indicators for bass performance, you might want to look into linearity into load. Here is the AHB2 speaker load measurement squished in paint to be approximately the same scale: Into 2 Ohms, the Apex is down 0.4 dB at 20Hz and 0.6 dB at 20kHz. Into 2 Ohms, the AHB2 is down 0.25 dB at 20Hz and 0.75 at 20Khz. Speakers also vary in load, including effect load, eyeballing the graphs. Unfortunately, Stereophile is inconsistent with graph scale. The Apex stated output impedance is 0.015. The AHB2 stated output impedance is 0.09 at 20Hz and 0.22 at 20kHz. Here is an example that compares the AHB2 to the Gryphon Apex Stereo because it is a recent review of a stratospheric price point. Unfortunately, they apply inconsistent scales, making it difficult to compare. Stereophile, choses to measure their amps into a standard simulated load. Whatever, they are doing, it is not comparable to manufacturer DF specifications, though we cannot be sure of those either, especially, when they do not provide frequency. has a measurement that is not typical for DF. Amplifiers are not typically measured for impulse response. Sound was extremely well-integrated and controlled, and the bass memorable.True. With the aid of a forthcoming DEQX HDP4 processor ($TBD) that's due in the fall, the system sounded super on a 16/44.1 file of the famed rendition of Copland's Fanfare for the Common Man, recorded by Eiji Oue and the Minnesota Orchestra for Reference Recordings. True, they also demand greater reliability and ruggedness due to the rigours of continuous usage and often transportation. The company's introductory Elephant memory player ($12,500) joined Benchmark Media's AHB2 power amps ($3299 each), DAC3 B D/A processor ($1799), and interconnects. There's an interesting parallel universe to be discovered in the neighbouring domain of pro audio after all, engineers should want the same as audiophiles, namely great sound. Quite possibly is the first and only amp that can outperform an NC400 module, indeed it's based on a THX AAA topology if you want to know more. judging from the THD+N graph posted, it seems that the Benchmark beats the Hypex with a +2dB in sinad. Just not sure I can justify the money outlay right now. That is one of the most interesting upcoming tests for me - if the AHB2 beats Hypex on the bench. Frankly I am not sure I would be able to tell the difference between the AHB2 and my Emotiva XPA-2, but I am anxious to find out. 'I never auditioned the DAC3 HGC in my own system, so when I got an opportunity to borrow a sample of the DAC3 B, I eagerly agreed.' 'I had been using MBL's network-connected N31 CD player/DAC (18,680 with Roon Ready. The Note received signal through the introductory version of the company's Liquid Cables ($8500/8' pair). The AHB2's lower output impedance might make the bass a bit better, and lower noise floor means less hiss in the treble. DAC3 B Review - John Atkinson, Stereophile. Laufer Teknik claims that the speaker has 360° dispersion up to 10kHz and 180° dispersion above thatwhen I walked around the speaker, sound was loudest in the front-firing direction≵0 to 100 times less distortion and up to 200 times the dynamic range "of a typical D'Appolito design," and the ability to work in a "really large room." The Note has no crossover above the subwoofer, stands 87" tall, is a mere 2" wide and 2.5" deep, and weighs only 40lb. 'The Benchmark AHB2 solid-state stereo power amplifier immediately grabbed the audio world’s attention about 7 years ago when it was introduced.' 'There are already a number of reviews, so the purpose of this one is to add another data point, another reaction to add to the knowledge base of this remarkable amplifier. The price includes a SB 3000 subwoofer ($1010 each). Sharing the room with John Siau of Benchmark Audio (left), Duncan and Laufer Teknik Products showed The Note ($32,500/pair), a line array speaker designed by Mark Porzilli of Melos vacuum-tube electronics fame. Finally, the opportunity arrived at AXPONA. From the first watt to the last watt, no audio power amplifier offers lower noise or lower distortion than the Benchmark AHB2.Benchmark has raised the bar by. William Duncan (right), who lives relatively close to me in Sammamish, WA, has been after me for a while to hear Laufer Teknik Product's new offerings.
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