Originally Posted by bear123
For amp designers, I wouldn't trust a guy who doesn't believe in blind testing of products enough to spend $1 with him. But I would trust the guy who built a reasonably priced amp that produces 185 watts with .0001% distortion. It's the Benchmark AHB2, and its only $2995. But that would probably rule it out as a true audiophile amp for alan0354 since its not $10,000. What a joke. I'd also buy an amp from the guy who designed the HypexNC400 and NC500 modules since they also measure better than just about any amp made, and cost half what the benchmark does for 3 channels vs 2, and with a lot more power to boot.
Anyone interested in the facts about these amps, check out their detailed independent reviews on audiosciencereview. If you want some audiophile tomfoolery about how they improve soundstage and imaging or any other such baloney, definitely DO NOT check them out. Only facts here.
And anyone who talks about how an amp improves soundstage, imaging, etc, is absolutely deluded. The only things that have any affect on that, at all, are the speakers, the recording, and the room and placement.
An amp affects soundstage and imaging????...ok folks, time to move on.
Where did you get the idea I said $3000 is cheap? My amps are $1000 each as I designed and built it. As for AHB2, I don't know how they get 0.0001% THD, but it's only at 1KHz. I only achieved 0.0005% with 4ohm load ( should be like 0.0003% with 8ohm). But the damping factor at 20KHz of the AHB2 is way less than good, it's only [email protected]
. This means the output impedance is 8/34=0.235ohm. That's very high. THD needs to measure at the speaker input, any amp measures a lot better if using a 8ohm resistor load. Notice other than damping factor, there is no spec at higher frequencies?
They did not spec THD at 5KHz, 10KHz, 15KHz and 20KHz.With damping factor of [email protected]
, THD is going to be sky high with real speaker measuring at the speaker input terminals.
See, you really have to know what you are talking to quote the technical spec.
My new amp is low power, it measured 0.0014% THD @20KHz, less than 0.001%@10KHz at 60W output into 4ohm. Damping factor is over 600 @ 20KHz.
BTW, what is your system so we can put it in perspective.