atmasphere
Responses from atmasphere
| Benz Micro Glider Loading I don’t want to appear ignorant but I’m not sure how the info you provided helps me in deciding what phono pre I should look for other than listening of course which really isn't an option when buying used. One with a 1k loading option or not? ... | |
| Tube Preamp, uses 6sn7/6sl7. With or Without Phono; With or Without Remote Volume, @lewm Just so you know both the Atma-Sphere MP-1 and MP-3 have remote volume available. | |
| Weak Link in Vinyl Playback @owl9113, @jasonbourne71 makes a point about passive volume controls. They interact with the output impedance of your sources, in this case the DAC and your phono stage, both of which have to drive your amplifier thru the passive control, which ca... | |
| Benz Micro Glider Loading @nicktheknife When dealing with a cartridge of this type the loading is for the benefit of the preamp, not the cartridge! What is going on is the inductance of the cartridge is in parallel with the capacitance of the tonearm cable. Whenever induc... | |
| Should I steer clear of class D amps Class D amps need a tube preamp or a solid state Class A input stage that adds 2nd order harmonic distortion to the signal. Linear power supplies can also add 2nd order harmonic distortion. These statements are false. I can imagine some amps (... | |
| 300b lovers Ralph, it seems curious to me that knowledgable audiophiles would rely on anything but sound to be the arbiter of their purchase decisions. Tube gear is a hassle and costly, but to my ears, it is the price to pay for such magnificent sound. I th... | |
| Weak Link in Vinyl Playback I say this because getting analog right can be an unexpectedly expensive endeavor. It used to be that getting the digital right compared to the vinyl was the expensive bit. @owl9113 The cartridge gain settings won't have anything to do with lo... | |
| I'm thinking about a low watt tube amplifier? @pooch2 Your current speakers will be a disappointment with an amplifier of only 4-5 Watts. My speakers at home are 98dB and I like more than just 4-5 Watts on them as well, although most of the time that sort of power would be fine. If you do c... | |
| Weak Link in Vinyl Playback it looks like the iFi Zen that I'm using has a fixed load at 47K Ohms. Am I referring to the same thing you are? @owl9113 You are. Cartridge loading is one of the more arcane issues of LP playback and it can have a big effect on MM cartridges! ... | |
| Weak Link in Vinyl Playback @owl9113 Your cartridge is a high output MM type. This type of cartridge needs to be loaded correctly to prevent very high audio frequency or ultrasonic resonance. If in the audio band, which seems to be the case here, the resonance will act like ... | |
| 4 8 or 16 ohms. @tattooedtrackman looking at the impedance curve measured by Stereophile on that speaker, I would seriously try the 8 Ohm taps as well. Most of the speaker's curve is well above 4 Ohms. There is a bit that is 4 ohms and slightly less in a limited ... | |
| Should I steer clear of class D amps My understanding was class D never really took off, despite the power efficiency due to the HF noise caused by the PWM. Times change things improve but I can’t find much about how they have mitigated this, in fact an article in EETimes refers to ... | |
| 300b lovers Are you at the point where you feel your Class D amps are equivalent to your best tube amps? @whitestix Yes. After extended listen sessions as you put it I don't find that our tube amps bring anything to the party that the class D doesn't. I r... | |
| 300b lovers A Cornell Dublier engineer once explained to me that the difference between a 150V rated cap and one rated at 175V was the way the cap was formed up and nothing else. Forming is a process where voltage is applied to the capacitor with a target of... | |
| 300b lovers I understand that you are referring to the approach you use with judicious application of negative feedback. I was referring to Lynn’s comparison to the “golden age “ PP amplifier which typically used 20db of NFB. Your current class D amplifiers ... |