atmasphere
Responses from atmasphere
| Recommendation for tube preamp How do the design a balanced phono stage without any solid state components in the signal path? @jlbkmb1958 The tubes we use are 12AT7s, which have two triodes inside a single glass envelope. The input signal is applied through an XLR connec... | |
| Recommendation for tube preamp Is there any such thing as a balanced fully tube phono amp? @jlbkmb1958 Yes. The first balanced tube phono sections were made by Atma-Sphere in 1989. | |
| Best tube amp for Wilson Watt/Puppy The Watt/Puppy has an impedance dip at about 2KHz. This is there to absorb energy since there is a 2KHz resonance in the tweeter. This is why the speaker had a reputation for brightness with solid state amps, because solid state amps will try to m... | |
| Hot off the press...Technics SL 1300G Based on specs, the 1300 essentially has most of engineering of the 1200G/SP10 Naturally, Technics did things to meet the P.P . Out of the box, a stock 1200G can be a "done" piece. The aesthetic is the deal breaker for me. @tablejockey I k... | |
| 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. |