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georgehifi

Responses from georgehifi

Nuvista Tubes - General
what's the point of a hybrid design Sales pitch, to make one believe there's a a romantic/euphonic side to it. as the tubes are in between the s/s I/V stage and output buffer and serves no purpose, but a sales pitch.Cheers George  
Nuvista Tubes - General
and is not at all "syrupy." Pretty good for a metal encased micro-tube. That's because it's got a transistor buffer after the Nuvista to drive the outside world with, without it it'd be "syrupy" if the Nuvista had to do the job.Cheers George    
Nuvista Tubes - General
Can you have a look at my question about the Nuvistors in your link I maybe wrong but I think Anthony Michaelson went to the Nuvsitor when the Trivistor became hard to get, in bulk, or the other way around.From what I was told by a distributor, h... 
Nuvista Tubes - General
George, we will agree to disagree on cap coupling. That’s why there’s so much rolling goes on with caps as they all have their own coloured sound, the best cap is no cap for the ultimate transparency.. DC management circuitry involved makes it a... 
Nuvista Tubes - General
I also don’t really see DC coupling as a benefit in an amp That's your opinion, listen to a good direct coupled amp, say Gryphon/Krell ect, then listen to it with the best cap or transformer you can get inserted somewhere in the signal path.For t... 
Nuvista Tubes - General
George, please correct me if I am misquoting you - in which case the circuit is no longer pure tube, but hybrid. Correct, as I was letting the OP know that the final sound signature of it was solid state and not tube. If it didn’t have the solid ... 
Nuvista Tubes - General
Of course there are direct coupled tube amps. The Loftin-White instrumentation amps, designed in 1929, and still used today, were direct coupled designs. The Acrosound Stereo 20-20, designed by the brilliant Ed Laurent, only has an input coupling... 
Nuvista Tubes - General
To your point about needing to have capacitor or transformer coupling, is this something unique to nuvistors? No, directed at all tubes, unless direct output coupled. I don't believe anyone has made a tube amp/preamp that is direct coupled (no ... 
Nuvista Tubes - General
So what’s the down side? They are a tube, and a tube needs to either have capacitor or transformer coupling, and the best transformer or tube coupling is no transformer or tube coupling. Unless you go direct coupling with them then there are othe... 
Schiit Yggdrasil -- 21 bit?
if turned in one direction, the dimensionality (and general sonics) sound "off," or, as others put it, "flattened," I don’t know the mechanics There are no mechanics just AC mains theory, which needs brushing up on. Mains in US changes it’s flow ... 
Earliest "MOST WANTED" gear
Earliest "MOST WANTED" gear As I mentioned before, 1977 Mark Levinson ML2 monoblocks only 25w!!!  Class-A monoblocks, that can keep almost doubling down to 1ohmhttp://www.hifido.co.jp/photo/05/504/50446/c.jpgFor a source would have to be Naim... 
Schiit Yggdrasil -- 21 bit?
But fuses DO work, if used correctly. Is there a way of using a correctly rated AC mains fuse the wrong way??Or are you saying that they are directional??Cheers George 
Schiit Yggdrasil -- 21 bit?
Really?!? Schiit said it would void the warranty if someone used a different fuse??? And rightly so, because many of these snake oil fuses are blowing, so "fusers" are going up in amperage from the original fuse rating, so if anything untoward ... 
Least expensive discrete resistor ladder NOS DAC?
The nuprime dac 10 has a resistor lader technology Sorry but that’s a resistor ladder for the volume control, not for D to A conversion. For that they use a Sabre delta sigma converter, which is not R2R ladder Multibit.Cheers George 
Recommended Preamp for pairing an Adcom 555II Amp and Theil CS 3.5 speakers
hifiman5 that the drive Please explain to all here, what the difference is of the "drive" to the poweramp in electronic terms, whether it’s driven from a preamp output or from the sources output. when voltage output is sufficient enough for th...