almarg
Responses from almarg
| BEST AMPS FOR WILSON SASHA Charles, a minor correction to your characteristically sage post. I'm pretty sure that the 211FE is a push-pull amplifier, not a parallel SET. I say that because it is described as transitioning from class A to class AB and then to class B at hi... | |
| Can SMPS based preamps/amps sound organic ? Interesting references. FYI, I tried to find Mr. Sanders’ patent or patent application for his regulated power supply design, which would have provided more information about it. But extensive searching at the Patent Office website (uspto.gov), u... | |
| BEST AMPS FOR WILSON SASHA I agree with George. The Sasha’s impedance curve suggests that it probably would not be an optimal or even a good sonic match for a triode-based amplifier that is described as using no global feedback.It would be possible to say with greater certa... | |
| Direction of aftermarket fuses (only for believers!) Gs5556, well said IMO. I've had occasion to make similar comments about those measurements in a number of other fuse-related threads, such as in a post dated 4-8-2016 in this thread. An excerpt: Regarding the measurements described in the HFT pa... | |
| Direction of aftermarket fuses (only for believers!) Atmasphere 5-27-2016 12:57 pm EDTI was not at any time suggesting that the holder was directional. Yes, that was very clear in your post, Ralph. It was also clear to me that Geoff's response represented a complete misreading of what you said.J... | |
| Can SMPS based preamps/amps sound organic ? Charles, yes, as I’ve said in a number of past threads my belief is that specs and measurements can often be useful, but primarily because they can often make it possible to **rule out** components from consideration. In some cases by raising doub... | |
| Can SMPS based preamps/amps sound organic ? FWIW, my DEQX HDP-5 preamp/processor, which is their top-of-the-line model, uses a switching power supply. Their somewhat less expensive previous top-of-the-line model, the HDP-4, uses a linear supply.I suspect that a factor in their decision to m... | |
| Direction of aftermarket fuses (only for believers!) Atmasphere 5-26-2016 12:31pm EDT... I joined this thread recently with some results on testing. Those results are that the directionality appears out of coincidence and that actually greater improvement can be had by rotating the fuse in the h... | |
| Jeff Rowlands Amp and Dac vs. VAC amp and DAC Charles1dad 5-25-2016Based on what Al has written it seems that the ARC tube amplifiers may utilize a larger degree of negative feedback (NFB) than the VAC amplifiers. I say this due to the lower output impedance (higher damping factor ) of the A... | |
| Direction of aftermarket fuses (only for believers!) I would think that it is not necessary to start modifying hardware and perhaps invalidating warranties in the process of getting to the bottom of the fuse directionality issue. IMO the methodology I suggested earlier should suffice, if done in an ... | |
| Jeff Rowlands Amp and Dac vs. VAC amp and DAC Rinpoche 5-24-2016 5:18pm EDTThe tap discussion is way above my head but I am writing it down and when I go to the shop to hear the VAC 200 iq system I will ask about it. If the VAC 200 iq is one of the winners, and I get to bring it home to try w... | |
| Jeff Rowlands Amp and Dac vs. VAC amp and DAC Thanks for that input, RHL. I would point out, though, that the MC-275 in particular, and also most and perhaps nearly all ARC power amps in particular, have considerably lower output impedances (corresponding to higher damping factors) than most ... | |
| Jeff Rowlands Amp and Dac vs. VAC amp and DAC Thanks for the references, Guido. I read through the one on "DAC-based Volume Control," and many of the others. All of which seemed to me to be informative, meaningful, and technically persuasive, yet concise and well presented.A model that would ... | |
| Jeff Rowlands Amp and Dac vs. VAC amp and DAC Ricred1 5-23-2016 9:14pm EDTI was originally told to set the attenuation on the DAC so that the left and right volume LED’s are of equal brightness. It could be that that setting would be appropriate for use with a preamp providing significantly h... | |
| Direction of aftermarket fuses (only for believers!) Would the imprint on the side of the cap diminish the contact area enough to degrade the sound and could it be that by rotating or reversing the fuse has the potential to align things in the most desirable manner? Hi Nonoise,I suspect that the sig... |