George 47

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About George 47

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  • Birthday Private

Personal Info

  • Location
    United Kingdom

Wigwam Info

  • Turn Table
    Voyd Ref 0.5
  • Tone Arm & Cartridge
    SME V/ IoII
  • SUT / Phono Stage
    Audionote s2
  • Digital Source 1
    Auralic Aries
  • DAC
    Audionote DAC2.1x
  • Integrated Amp
    Nord One NC500DM
  • Pre-Amp
    Pass Labs XP12
  • Power Amp/s
    Pass Labs XA30.8
  • My Speakers
    Audionote E/HE
  • Headphones
    Stax 303
  • Trade Status
    I am not in the Hi-Fi trade

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  1. An easy way is the weight?? If it is heavy it is likely to be due to a heavy transformer and large capacitors, so even the weight is a specification that could give a clue on the impact on the dynamics of the amp. I do not know if this matters as it is very speaker dependent but if the amp can 'double down' then that may help. For example, an amp that can give 100w at 8 ohms, 200w a 4 ohms and 800w at 2 ohms. That may help with getting decent bass (drum) out of a speaker with an unusual crossover. Most speakers are now closer to 4/6 ohms than 8 ohms. Now in the bass some companies design in ( to extend the bass?) complex crossovers with significant phase shifts. That requires more power so decent power into a high phase shift, 2 ohm low resistance value may be needed.
  2. Some have speculated. Noise could be a parameter because if the low-level signals are buried in the noise you would not hear low-level harmonics or subtle instrument sounds. But most amps now have very low noise levels. Another is slew rate which is a measure of an amps capability to respond quickly to an input signal. Normally measured in Volts/second. Not sure if anyone has found a positive correlation between Slew Rate and microdynamics. John Atkinson has tried to correlate measurements to perceived sound but I have not seen anything from him on microdynamics and measurements.
  3. George 47

    Adding distortion to improve percieved sound

    I must have missed it but what a great summary. He clearly is an objectivist who does not dismiss what trusted subjectivists are hearing. Sometimes that leads to differences due to the way people hear audio and build up their own models. And other times (non-filtered DACs) he does not understand why they hear what they do and he can not explain it apart from a dislike to pre-ringing. However, consistent personal observations are accepted and this adds information to the interpretation of measurements. Interesting observation on how RFI pick-up could lead to increases in amplifier noise (through the feedback loop) and he suggests this could lead to differences in the sound of speaker cables. A good and honest report.
  4. George 47

    Post rate

    What was there a wedding?😀
  5. George 47

    Post rate

    Yes, and there is an excellent pub there. the Queen Inn. Don't you just love ironic coincidences?
  6. George 47

    Post rate

    Dummer would have been empty as most of them were going to a relatives wedding a few miles up the road.
  7. George 47

    A BIG ASK! - Help Required

    Top Wamming...
  8. George 47

    Adding distortion to improve percieved sound

    I can only agree.
  9. Bloody scientists. Just as you get used to a fact they go and discover something new and change their minds. Not like religion, the10 commandments are still the 10 commandments, 2,000 years or not. Gives a great stability, not clouded by damn facts.
  10. Steven Hawking issued a paper with another researcher 10 days before he died that may help answer this question. Basically, there was a Big Bang but not a definitive single event. Evolution is a 'clumsy' process and there would have been many false starts before we evolved and we continue to evolve (appendix anyone?). You could try reading the Blind Watchmaker and the discussions on the eye with strong evidence of its evolution rather than being created. Evidence? Detune your FM tuner and listen. That hiss has a component that is from the microwave background from the Big Bang. Yes, some of the hiss is from the Big Bang.
  11. George 47

    Adding distortion to improve percieved sound

    True. And there are more nerve connections going to your ears than coming from the ears to your brain that add/modify a huge amount of what it 'hears'. And although the stereo con-trick is very simple to do it is an amazing feat of brain power to convince you there is a full orchestra in front of you when it is two speakers squirting sound into a room that will reflect and confuse the whole issue. Of course, it is a great creative process to communicate a powerful message, a lot of time without words and its effect on people has been measured. But what you hear may be different to what I hear. The number of times I have played audio at home to other music lovers and they will comment on the bass playing, the drummer, the singer and I was listening to the rhythm guitar.
  12. George 47

    Adding distortion to improve percieved sound

    These tests show no differences in most audio yet a simple relaxed listen shows significant differences. The test is being used outside of its design envelope. This observation has 2 possibilities, one the audio does all sound the same and the test is good or the audio does sound different and the test is not adequate. Of course, sighted tests have problems but your proposed test is more questionable.
  13. George 47

    Adding distortion to improve percieved sound

    I did not with my super measuring amplifier. A quick listen would have solved that problem. But let's move on. OK let's have a look at something simple. How powerful is the amp? OK measure its output power into an 8 ohm load. Right now do we want peak power, RMS, short-term (ms) output power? Right, now we need to ensure its output power into 8, 4 and 2 ohms. Does doubling down help or not? OK but how do we deal with a reactive load as opposed to a 'purely' resistive load? This is all before we try to ensure it will mate well with our speakers. Of course, we might want to know how its distortion changes with output power. If it clips badly will it sound worse when the odd peak comes along or not? And the rest, recovery time etc.? Good, now let's get onto the complex issues. It's great having a bucket-load of measurements but which are important and at what level are they a problem, or OK, or brilliant and which impacts the sound? If most measurements are very much the same for SS amps, why don't they sound the same? Most people do. The measurements for TV are even worse than those for audio.
  14. George 47

    Adding distortion to improve percieved sound

    For my particular amp, the company concerned and a whole swath of testers on DiYAudio. There is a wide range of consistency once account is taken of the power output not being defined as RMS power.
  15. George 47

    R2R NOS DAC and DDC Mini-Bakeoff

    Nice....but then I am biased.