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atmasphere

Responses from atmasphere

Class-D amps - a different re view
Muralman1, here indeed is one the bigger issues of forum use in high end audio! We use a lot of the same language in description of system attributes, yet have no way of knowing if we actually mean the same thing with the same depth. So there is n... 
Class-D amps - a different re view
So y'all understand, just because I make tube amps, that does not mean I'm blind to what is happening in the world of class D. I think I made that clear on my first post to this thread.Though Genesis did use a class D amp, it was a far cry from wh... 
Class-D amps - a different re view
Muralman1 and Audioperv, I think the thing to look at is intention. If you start out with a given compromise, and then try to do the best you can, you wind up with something that is very good but with a compromise.In the case of tube amps, comprom... 
Class-D amps - a different re view
Muralman1, being one of those 'tube guys' I have to agree in part with you- this is something (at least for now) that I for one will not admit. IME, class D has a long way to go to beat what I see as the advantages to the amps that we make though ... 
Class-D amps - a different re view
Eldartford, I agree, unless you consider that commutation issues often limit semiconductor switching. A tube can switch at very high frequencies. Of course the idea is pie in the sky, but the point is that the technology is still unfolding and we ... 
Class-D amps - a different re view
We did an evaluation of class D about 2 years ago. At that time the technology was still immature. My guess is that it is still; the best of the class D stuff, while not bad, does not hold up to the state of the art.Yet.It seems to me that tube an... 
which Jensen cap to use?
Be forewarned that nearly all paper and oil caps can exhibit electrical leakage (i.e. they don't always block 100% of the DC voltage) which can skew the bias voltage of succeeding stages of amplification.They can do this out of the box or after a ... 
Tube amp for rock? Newb Questions
Hi Zamdrang, I'll put it this way:If you are investing in a tube amplifier, any tube amplifier, that investment dollar will be best served by a speaker that is at least 8 ohms rather than 4, all other things being equal. Sixteen ohms can often be ... 
Tube amp for rock? Newb Questions
Hi Zamdrang, if you want punch and dynamics without brightness, consider that you will have to work with an amplifier that is zero feedback. Amps with feedback have enhanced high order odd harmonics, which the ear uses as loudness cues. This works... 
Stereophile - MF Supercharger article-add 550W/ch.
Dbphd, its not empirical if you don't try... 
Stereophile - MF Supercharger article-add 550W/ch.
Hi db, I don't think high-ordered odd harmonics do add to our lives. The current state of high-end audio suggests that they don't. Their rarity in nature might mean that less brain power is required to detect the change in volume, but what is impo... 
Stereophile - MF Supercharger article-add 550W/ch.
Hi Dbphd, the way that tubes operate closer to the rules of human hearing is through the lack of odd-ordered harmonics, which comes from greater linearity and less need for feedback. Feedback runs counter to the rules of human hearing (i.e. adds h... 
Stereophile - MF Supercharger article-add 550W/ch.
db, don't think for a minute that transistor amps don't have colorations too! My experience is that it is a rare transistor amp that does not also sound like transistors- I can count them on one hand. No wonder that a 'tube-like' sound is used as ... 
Preamp Deal of the Century
Better yet, ask him what he used to voice out the phono section of the kind of preamp you have.FWIW, in the design of a phono section, that phono section is not 'voiced' although that is a common misconception. If the design is competent, the RIAA... 
Stereophile - MF Supercharger article-add 550W/ch.
FWIW the MBL 101s don't really need as much power as people think. Yes, they have low measured efficiency at 1 meter, but as soon as the speaker is put in a real room, the sound radiating in directions other than the one that the microphone was pl...