atmasphere
Responses from atmasphere
| Considering moving to separates with a tube preamp-appreciate recommendations When sitting down to audition your line of amplifiers and without regard to price, are you able to describe what differences will be noted as we cycle through your line of amplifiers, including the new class D? I would post this as a separate t... | |
| New Class D amplifiers But the gold standard sonically remains A. Where heat/weight is not a consideration (eg., preamps) class A is the norm. This statement is false. What is the 'gold standard' is a benign distortion product, one that allows the amplifier to be smo... | |
| CLASS A POWER RATINGS This is a very good thread, but just to clarify; Class A is a single-ended amplifier. Push-pull is class A/B (even though it is often described as class A). Do I understand it correctly? @sngreen No. The Dynaco SCA35 is an EL84-based push-pull ... | |
| Considering moving to separates with a tube preamp-appreciate recommendations You could also look at the AGD Tempo Di GaN stereo amp that’s also in your price range, and I believe both amps are upgradeable for future tech innovations, which is really nice (I know AGD is but maybe Ralph can confirm his amps are too). Our ... | |
| Tube amps - what 3 things… The ability to switch between modes (triode, ultralinear, pentode) is nice. I do not agree with this statement. The problem is that to do this properly, the output transformer (and the rest of the output circuit) has to be set up to handle the ... | |
| New Class D amplifiers going from A all the way to D strikes me as somewhat extreme for one who is used to the Pass. Why not look into a good A/B first? The main reason AB exists is to reduce heat and power consumption, with some of the benefit of class A operation.... | |
| Considering moving to separates with a tube preamp-appreciate recommendations The Bel Canto EX-1 amp intrigues me too, but it's class D, and I'm not sure about it... @jpipes FWIW class D has evolved to easily compete sound-wise with any class AB or class A amplifier made. I do recommend audition though- some class D amp... | |
| What amps are out there that are Class A, 50 wpc into 8 ohms? It is probably safe to say that it is over 50 watts of Class A power. 😁 What is safe to say is that it draws 120 Watts at idle. This is a sort of 'who cares' thing since the point at which the amp goes from class A to AB isn't important; the a... | |
| CLASS A POWER RATINGS @rost The confusing bit here is that any amplifier that goes to 'AB mode' is a class AB amplifier and is not class A. By definition. If you are conflating a class AB amplifier with a real class A amplifier, I can see why the question. The techno... | |
| New Class D amplifiers How the measurements reflect the sound that we perceive? I described that above. Since the ear uses higher ordered harmonics to sense sound pressure, its keenly sensitive to them since the ear has a +120dB range. If these harmonics are not mas... | |
| Tube amps - what 3 things… If you are planning to use a tube amp, do yourself a favor and avoid low impedance speakers. Your amplifier dollar investment will thank you. Tube amps using output transformers can lose as much as an octave of bass response going from an 8 Ohm l... | |
| New Class D amplifiers In the interest of my own learning, would you please point out which measurements correspond to what people hear? Sure- two measurements that have not got the attention they deserve- first, distortion vs frequency, which ideally should be a str... | |
| What is your experience with amp power? When the builder, who is from Italy, came over to the states, I got to talking to him and I asked him about the output power of my amp. I got such a look of disdain from him; clearly I did not deserve that amp if I concerned myself with such irr... | |
| Comparing Phono Pre-Amps Cartridge loading has to be considered! By loading alone, the same cartridge can sound different with different phono sections, owing to things like input capacitance and high frequency overload margins. So an AB comparison using a switch at the ... | |
| What amps are out there that are Class A, 50 wpc into 8 ohms? Anything over 30-40 watts being sold as Class A is not pure class A, it’s class A biased. This statement is misinformation. If an amplifier is class A biased, its a class A amplifier. The output power has nothing to do with it. The trade off ... |