atmasphere
Responses from atmasphere
| GaN amps: Peachtree or LSA Voyager? Cary's 805 had a variable feedback control. I don't know how many other amps were made with this feature. Lots. Starting in the 1950s. | |
| Output tube types - need some opinions For this next amp, I'm hoping for more headroom (at least 30W), a bit better macro-dynamics, and maybe a touch less warmth. I second @jasonbourne52 's opinion. I've seen PP 300b amps that make about 30-35 Watts. I listen mostly to jazz, folk... | |
| Cartridge Loading.....Part II I haven't kept track of which current driven phono stages on the market use op amps or discrete transistors or tubes in the input I/V stage, although I don't know of any that use a tube or how you could use a tube in that fashion. @lewm Transi... | |
| Voltage mode vs current mode phono stages Hi Ralph, You wrote, "This suggests that as the impedance of the cartridge goes up, the gain of the circuit goes down, which is probably good since the output of the cartridge will be higher." The linear relationship between voltage output and s... | |
| Amp Recommendations for Marantz 7c Roger Modjeski of Music Reference/RAM Tubes said he considered the 8B superior to the Model 9, and didn’t much care for the Citation amps at all. I think the 8b was a better amp than the model 9 as well. But the Citation 2 was better than eithe... | |
| Marshall Major Alternative For those who have played a Marshall Major, can a Marshall Origin get close enough? @pekoms The Marshall Major was built around hifi principles rather than guitar amp construction (since it was meant for either bass or PA amplification) so used... | |
| GaN amps: Peachtree or LSA Voyager? Is it not possible with both Class d and Class A/B amps to engineer the amp to the lowest possible distortion and then add back enough 2nd and 3rd harmonics to give the amp the degree of musicality desired? And if so, could a "distortion" dial be... | |
| Cartridge Loading.....Part II I have been complaining about that on this forum over and over again. Only be direct questioning can one find out what the input impedance of these "current driven" phono stages actually is, and it's typically from a few ohms in the best case to... | |
| Cartridge Loading.....Part II (1) what if the input device is a discrete transistor or a tube, not an op amp? @lewm Then there won’t be a virtual ground. So right away its a voltage amplifier not a current amplifier. (2) the only way I can imagine two points separated b... | |
| Balanced Line Stage Tube Preamps All reviews I have read of the MP-3 says you DON"T offer silver or remotes! A recent development? The other limitation is lack of RCA inputs, @hickamore Silver has been available for about 10 years or so. The remote probably about 6-7 years. The ... | |
| Balanced versus single ended I recall replacing Silver Surfer XLRs with WireWorld Platinum Eclipse 8 - HUGE difference in quality. Im not inclined to A/B them at this point, though, it might eat at me. However, I used a sample Nano 45 graphene contact enhancer on the WWs, an... | |
| Balanced Line Stage Tube Preamps Your critique of ARC LS28SE/Rogue RP-9 welcome if offered. @hickamore ARC has never supported AES48. So that means to get the most out of them you have to audition cables and be careful about ground loops. This isn't any different from using a... | |
| Cartridge Loading.....Part II Why not? Consider the case to be an ideal current amp with the appropriate series resistance added so the input impedance is 5Ω. In this gedanken world the ideal voltage amp and the ideal current amp sound identical. It seems to me that you ... | |
| Question about speaker angle Keep in mind that toe in alters high frequency response, the level of side walls reflection, and the relationship of direct and early reflected sounds. ^^ This! +1 Early side wall reflections are interpreted by the ear as harshness. So you toe... | |
| GaN amps: Peachtree or LSA Voyager? I see an often quoted limit of 0.1% as being the absolute lowest than can be detected, and I think normally much higher. @deludedaudiophile If that were primarily lower ordered harmonics that could well be true. But otherwise that statement is... |