• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required as is 20 years of participation in forums (not all true). Come here to have fun, be ready to be teased and not take online life too seriously. We now measure and review equipment for free! Click here for details.

Benchmark AHB2 / Class D Purifi Eigentakt / Mark Levinson 333 - Listening impression & Conclusion

Matias

Major Contributor
Forum Donor
Joined
Jan 1, 2019
Messages
2,637
Likes
4,328
Location
São Paulo, Brazil
Again this is a worst case scenario he measured. Now we need to see how in between amps measure too.

View attachment 146229
And if we consider the reverse, that is, the Pass minus Hypex difference, or generalizing, a high output impedance class A or tube amplifier compared to a modern low output impedance class AB or class D amplifier, that curve would look a lot like a boosted mid with reduced bass and treble. Exactly the "warmth" that some owners are looking to add in their systems. A form of "mix and match" components that serves as equalizing the system to a desired target curve.
 

tw99

Senior Member
Joined
Mar 13, 2019
Messages
330
Likes
690
Location
West Berkshire, UK
The Pass Labs has a damping factor of 1.6. That doesn't qualify as well designed. This is what's Archimago article demonstrates. It also demonstrates the importance of using an amp 'within it's constraints'.

Conclusion 5: "While I can show and hear a difference between the Pass SIT-2 and my Hypex nCore quite easily, realize that within reasonable objective operating parameters, amps will sound alike! Likely, you'll find such "clean" amps will be indistinguishable in a volume-controlled blind test with actual music regardless of whether they're Class A or AB or D. Tube or solid-state. Lower or higher feedback".

So to me Archimago confirmed the general rule. Where do you see him demonstrating the opposite?

I agree, that's exactly what I meant. He is confirming the general rule by showing that badly designed amplifiers don't sound like good ones.
 

sq225917

Senior Member
Joined
Jun 23, 2019
Messages
416
Likes
408
Do you think the Pass is badly designed, or built to have exactly the effect on FR that the designer and many potential owners are looking for?

Listeners are mixing and matching to achieve the sound they want to pay for, there's no right and wrong, the eventual owner is the arbiter of what's right for them. That's not to say that a causal understanding might not help them achieve this more easily, just that not everyone wants the flattest FR and lowest overall distortion.

Not everyone wants what we want.
 

sq225917

Senior Member
Joined
Jun 23, 2019
Messages
416
Likes
408
Absolutely.

Do speaker designers, design for a flat in room response, no, why, because a top down response is more preferred. Same here Nelson designs what he thinks people want.
 
Top Bottom