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atmasphere

Responses from atmasphere

GaN amps: Peachtree or LSA Voyager?
question - in your view, what accounts for some amps having noticeably better soundstaging and imaging capabilities than others? be it solid state vs solid state, solid state vs tube, class a or ab versus class d types most would say tube amps h... 
Balanced versus single ended
n the conversations with him, I mentioned that, in my mind, for balanced to work at it’s best, it should be designed in layout (from the active transmission end and at the active receive end) with an RF design and build mindset, where the field e... 
Cartridge Loading.....Part II
My belief is that the nature of current amplification vs. voltage amplification (namely how they load a cartridge with low vs high impedance) has a dramatic effect on the mechanical behavior of the cartridge and may be partially responsible for t... 
Ideas for an amplifier?
May you suggest a like for Ralph. I cd not find them on Google. @geworthomd Our site is http://www.atma-sphere.com @holmz Thanks!  
Competitive class D amp suggestions
https://forum.audiogon.com/discussions/rip-tom-o-brian-of-the-cherry-amp-co @niodari Sorry, Tom passed away last December.  
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 ...