atmasphere

Responses from atmasphere

DC Offset Issue in Don Sachs Preamp
@jbhiller If this problem continues, one of the more common reasons is failure of the bypass capacitor on the power switch. This can result in a loud pop at times, depending on the Voltage of the incoming AC line when you shut it off. So it can se... 
Amps that don’t impersonate space heaters.
You need 1 very good watt to drive those speakers. Even Class A, 1-5 watts may remain extremely inefficient but if you you were to take say a 5w PX25 amp, it will burn off 15w x 2 instead of 90w. Flea watt tube amps are the way to go. A good c... 
Power Amplifier - Maximum Resolution & Detail!
Ime, the higher you go up in price doesn't necessarily guarantee that you could experience the above mentioned. It seems to come down to the nitty gritty of the circuits under consideration, i.e., the black art of power delivery and analog circui... 
Amps that don’t impersonate space heaters.
One recurring theme I encountered in researching this phenomenon is that bass roll-off is a common trait among amps employing zero global feedback. @helomech I've seen zero feedback amps that go full power to 1Hz and don't seem to lack any bass a... 
Electrostatics and tubes
The advantage ESLs have over other kinds of speakers is the fact that the Modus Operandi  of operation is powered. In a conventional speaker the voice coil moves when current is put through it in response to the magnetic field that is present. Tha... 
Amps that don’t impersonate space heaters.
@hoosierinohio Agreed, but I run a class D because of its sound quality. The low heat and energy draw is a side benefit.  
300B, 2A3 experiances wanted
@bruce19 That ’magic’ you’re looking for in an SET might be mostly distortion- they make quite a lot of it, mostly the 2nd harmonic which gives ’warmth’ to the sound. I’d give your ST-35 another chance. Here are the considerations that will help ... 
Electrostatics and tubes
Nice!  
Amps that don’t impersonate space heaters.
There have been some epically hot periods in metropolitan Chicago this summer. I have had a long running affair with a pair of Avantgarde Uno s2’s and don’t really require a great deal of power. I have two dissimilar but equally compelling amps (... 
George Wright
@zeal If it doesn't play, have you tested the tubes on the power supply chassis? If either one of those were to fail the phono section could go dead.  
Do high dollar mono blocks truly improve the Sound Quality over the mid tier amps
@audioman58 The class D amps we make right now are exactly that and were from the start.  
Do high dollar mono blocks truly improve the Sound Quality over the mid tier amps
Atmashere when was the last   time  the class D mono blocks  were Officially upgraded or improved ?  AGD for example has had 2-33 upgrades that are a noticeable step up  in sonics depending on model.  there has been several new Gan Mosfets in t... 
List Of Small Company Tube Amps
Shame you have to toot your own horn; I guess folks consider you ‘large.’ @oldrooney That might be because we've been around for so long (46 years). IMO getting into this sport should be for fun and not to make money so we've always been a smal... 
Step Up Transformers….Are they Worth the Trouble?
and do you really think they get within .01 dB or whatever it is that Raul thinks is needed on this end? @herman  No. That spec sounds dubious. There would be no way to verify that in field testing since the margin of error in the test equipme... 
Step Up Transformers….Are they Worth the Trouble?
Here's a question that arises when one considers the RIAA equalization error in a phono stage: What is the standard by which the error is calculated? Is it the curve described by the equations in the Lipshitz paper?  Or is it the ideal curve, whi...