atmasphere
Responses from atmasphere
| Class A or Class D solid-state amplifiers (modern designs) @petaluman As you might expect I have read Nelson's article before. He addresses the issue of poles in the amplifier caused by adding more stages of gain and how that adversely affects the use of feedback. I addressed that issue in my first post ... | |
| Tube amp question @falconquest Plate voltage is the voltage on the tube from cathode (usually at or near ground) to the plate of the tube. The plate is exactly what it sounds like; it receives electrons that flow from the cathode. The audio signal is imposed by the... | |
| Class A or Class D solid-state amplifiers (modern designs) That analogy doesn't hold water, if you see what I did there. | |
| Tube amp question KT150's require 600 volts at the plate. @daveyf @falconquest This statement is false. If you look at the tube's specs you'll see that for class A operation (single tube) 400V is recommended. This would be the most current you would want to... | |
| How much difference does a phono preamp really make? The front end of the system is where you really have to get things right. It makes no difference how good your amps and speakers are, if the phono section isn't right (along with the turntable/cartridge itself) there's no way you can make up for t... | |
| Sound Better w/Amp Directly Into Wall Then Thru Zero Surge So I’m wondering what is happening in or to the amp to cause this change in sound? Again, the rep from Zero Surge today said that there shouldn’t be any difference. "It’s just wiring." Emphasis added. That is exactly what the issue is! When yo... | |
| Digital amplifier fans, NAD C298 Purifi Eigentakt To be clear, the 'D' of class D does not mean 'digital'. All class D amplifiers are analog; if not, its not a class D amp. | |
| Class A or Class D solid-state amplifiers (modern designs) I havenot heard that many that are point-to-point wired amplifiers using the best parts quality with customer made transformers and chokes, Audio Note non-magnetic resistors, V-Caps, copper plates, etc. I have heard most of the typical tube amps... | |
| Let me end the Premp/Amplifier sound debate ... But today it's almost imposible that 2 different manufacturer designs can sound the same. That depends on how successful a design is with regards to its application of feedback. If there is enough feedback then issues of coupling caps and powe... | |
| Let me end the Premp/Amplifier sound debate ... The question I always had with measurements, are we even measuring the correct things for human hearing parameters? We are, if all the measurements are actually made and often they are not. I think I outlined what is needed to know the sound... | |
| Let me end the Premp/Amplifier sound debate ... But I think it is about distortion and and higher order harmonics. @atmasphere mentioned it in the thread about his new class-D amp… maybe on another forum though? The “quiet loudness” is something I do not hear often. Mostly because I do not he... | |
| Class A or Class D solid-state amplifiers (modern designs) Objectivism ruled and high negative feedback gave vanishingly low THD and IM numbers. However, the resulting sound quality got worse, not better. TIM distortion was discovered, feedback was dialed back, and the importance of listening was once ... | |
| Class A or Class D solid-state amplifiers (modern designs) To date, we have not heard a class D amplifier that competes in sound quality. We are open to hear something that comes close but not yet to our ears. I have. FWIW class D amps vary at least as much in sound as tube amps do. | |
| ATMA-SPHERE MA-1 MK11.3 with magnepans, am I completely mad?! If you have a woofer amp, and the mids and highs are handled by the MA-1 I think you have a shot at it. You might want to also try the ZEROs with the amps (www.zeroimpedance.com); do both ways and see what you prefer. | |
| Class A or Class D solid-state amplifiers (modern designs) Let’s compare and contrast. Which one is technically better? Here's what you're up against: distortion. Sure, class A does not have crossover distortion. Neither does class D. The main thing you're dealing with is IMD and harmonic distortion. ... |