This statement is false. You are false, and have no idea about the BS you spread sometimes, eg Zeroformers, OTL’s drive capabilities etc etc Do your homework before posting this **** you spread. I’ve built many Class-A’s from 20watters to 150watters, including massive 2 man lift self contained water cooled ones Get off your horse, stop the BS and concentrate on your own "so called patented Class-D" I can link to on another forum, because it will be left behind and over taken with cheaper ones coming out the rate your going. |
Once again
You can prove this for your self by listening to an amp with user switchable bias while listening. EG Parasound JC1(low/high bias), Gryphon Antillion (low/high/higher bias) etc etc.
The difference you hear with more/higher Class-A bias, is an easier, smoother, richer presentation to the sound, that’s no less dynamic and yet makes the speakers disappear, even as the music goes louder. And as a result the sound washes over you rather than being fired at you from the drivers, and that is the result of the lessening of the class-B xover distortion when you engage more and more Class-A bias.
Cheers George
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For the same given amp that is comfortable within all it’s design aspects either at 100w Class-A bias or at 5w Class-A, the 100w Class-A bias will ALWAYS!! sound better. Unless you are listening to 110db horns Just to add to the end of that. "Unless you are listening to >110db horns, then they will sound the same" because it only take 5w to get >110db horns going. Cheers George |
Wrong info to those reading this.
When listening at normal to loud levels "or" on hard to drive speakers, Class-B xover distortion is just as prevalent in low bias Class-AB amps when pushed past the low Class-A bias point. And thats fact.
And I'll say it again.
For the same given amp that is comfortable within all it's design aspects either at 100w Class-A bias or at 5w Class-A, the 100w Class-A bias will ALWAYS!! sound better. unless you are listening to 110db horns
You can prove this for your self by listening to an amp with user switchable bias while listening. EG Parasound JC1 Gryphon Antillion etc etc.
Cheers George
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yes I that was said before "I might be off here" and I replied to him. Yes way off!! And gave the explanations why. https://forum.audiogon.com/posts/2130814https://forum.audiogon.com/posts/2132377As no one in their right mind would prefer the sound of class-B xover distortion no matter how little. To the same amp in Class-A (unstressed) with no xover distortion. The doubters, should do themselves and those here a favor and listen to a Gryphon Antillion that can be switched from 10w Class-A to 50w Class-A to 100w Class-A on the run while listening. And there are others like the Parasound JC1’s etc etc Then the persistent doubters can hang their head in shame for even suggesting Class-B can sound better than Class-A if all is equal. Cheers George |
Like I said, once again.
"There no such thing as a "good sounding" class-B xover distortion!"
Because Class-B xover distortion it’s NOT a "nice/colored" sounding distortion like many tubes give, and to eliminate if possible (without sterilizing the sound it with large amounts of feedback) is ALWAYS better than having it.
And those that continue to profess that a Class-B amps xover distortion can sound as good if not better than no xover distortion in Class-A amp are seriously kidding themselves, and worse are charlatans.
Cheers George
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The sound of any amplifier is always about what distortion it makes The sound of ANY amplifier is better without ANY distortions whatsoever. (Sure some distortions are not AS bad as others.) So long as very little distortion is NOT attained by using means that create other problems areas EG: like masses of feedback global or local, global especially! And there no such thing as "good" sounding class-B xover distortion! |
So, with less than capable speakers and headphones class AB can sound better ? Even if we are talking about excellent class A amp ? Who’s saying this rubbish, you get rid of transistor Class-B xover distortion when you bias higher into Class-A so long as everything else is unstressed. Unless xover distortion is liked🤦♂️🤦♂️🤦♂️🤦♂️ Cheers George |
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Were not talking about saving the planet, we’ve already ****** that up. And covid will be judge and jury on us for for doing that.
We’re talking about the best sound here, please get your priorities right!
Cheers George
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some Class AB amps sound better I say it again. If they can take it without strain on anything, those same A/B amps will sound even better again if their Class-A bias was turned up full, as you eliminate any xover distortion, as it never goes into Class-B which gives xover distortion no matter how well designed Cheers George |
I might be off here, but class A amps don’t drive lower impedance speakers very well either. Most class A amps aren’t stable into 2 ohm loads. Krell being one Of the exceptions. Sorry your off, one word for both, no. Cheers George |
Class A does NOT sound better (as the thread starter claimed). He doesn’t mean different manufacturer amps. The same amp/s will sound better without any xover distortion, and the way to get it is with more Class-A bias if all else can take the extra juice that it needs to do take that extra class-A bias, and it will sound better for it. Just have a listen to the Halo JC1 monoblocks they have a switch on the back that raises the Class-A bias quite considerably, you clearly hear which sound better, same with the Gryphon Antillion with it's switchable bias. Cheers George |
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I am sure George and some others could offer an explanation of what happened beyond just formal power ratings.
Here we go, watch out for the flame throwers !! Stereophile: Legacy Focus
Not only are there two minima in the bass of less than 2 ohms, and another of less than 3 ohms in the mid-treble, but there is an amplifier-crushing combination of 3.3 ohms magnitude and 60 degrees capacitive phase angle at 20Hz. Fortunately, it is rare in music to have high levels of energy this low in frequency. They Legacy’s might have been 95db, but they were a "savage load" for any amp right through the bass up to 150hz, 1.8ohm load with 40 degrees of - phase angle 55 at 30hz!!! that could simulate lower to the amp in the bass https://www.stereophile.com/images/archivesart/LEG20FIG1.jpgEspecially bad for complimentary push pull Mosfet amp with a lot of A bias they don't do current very well into low impedance. Bi-Polar amp (BJT’s like Ago, Gryphon, JC1 Krells would have far better with these sort of speakers) And what looks to me like a "average amount" of storage reservoir capacitance for a Class-A especially, may have the watts, but looks like not much for reserve for current. Sure it got 2 trannies but where’s the massive stack of power supply caps https://ibb.co/3rZbwdmhttps://ibb.co/zF89tFRCheers George |
ducati1098rr22 posts
Wow the viper is drawn to another thread. For a 22 post member who stalks, your way too uncool/and technically inept to associate your self with Ducati, better suited to mo-ped. Stick to what you believe in, in those little black dots https://ibb.co/LpDpf3f |
Class A amps (almost) always measure better, not sound better.
Always "unless" the power supply/s can't handle the extra juice need for the higher class-A biasing, then they do sound worse. Cheers George |
Because Class A does not always sound better. Obviously. They always do, but it has to be the same amp designed to take both settings low Class-A bias and high Class-A bias without being stressed. EG: Halo JC1’s always sound better in high class-a bias Gryphon Antillion always sound better in the highest class-A bias etc etc etc The more and more class-A bias the less xover distortion there is and so on the louder you go, on and on till the amp reaches clipping when the amp is in full class-A never switching off either complimentary side of the push pull transistors. Then there's single ended class-A tube and SS but they have to be either capacitor or transformer coupled, not my cup of tea. Cheers George |
