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Recent content by greg788

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    Purifi Class D or Naim NAP100 for new amp?

    PerF: which class D have you listened to (Hypex, Ice, Purifi, etc.)?
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    Purifi Class D or Naim NAP100 for new amp?

    Does anyone have experience with either Class D (Especially Purifi Eval-1 / 1ET400A) and/or a NAP100? Thoughts on either or both? Looking for a new amp for a second system, to be mated with a Myryad MXP-2000, which would be fine with either based on gain, sensitivity and output impedance...
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    Repair Outfit for Older DACs?

    Does anyone have a recommendation for someone who'd be willing to repair an older DAC in North America (preferably USA) and hopefully inexpensively ... My EAD DSP-7000 mk3 suddenly refuses to lock onto signal for SPDIF
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    Inexpensive Good Vintage Turntables?

    I'm considering buying a turntable again. I've been without one for going on 10 years. This time around, could you recommend some really good inexpensive models (prefer belt but DD OK, too). And carts (preferably modern) that will work with them? And who are good online sellers of restored...
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    Quad Current Dumping Amps

    Never heard one but always wanted to ... I found two (405-2 and 606) that are fully restored (new caps, better opamps, etc.). What are your experiences and thoughts on these amps (taking into consideration also the fact that they're fully restored and I won't be using them with Quad preamps)?
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    Valve amps and loudspeaker impedance curves

    Radford Revival is correct. One speaker designer called this impedance linearization a "twister" (don't ask me why). Some sort of LCR is applied to each peak as a separate circuit. So the plug in thing in this case appears to have 2 circuits, one for the upper reflex peak and the other for the...
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    Meridian 557 Power Amplifier

    Yes, couldn't find much of anything
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    Meridian 557 Power Amplifier

    What are your thoughts on this amp? It would be used with a Quicksilver Line Stage Preamp. Searches both here and google as a whole didn't turn up much. Good amp, bad amp? Reliable? Given it's ca. 20 years old, general reliability now becomes a factor ...
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    Meridian 556

    I found one of these for a *great* price and it's mint. The question is, how good is it as far as sound quality? What is its sonic character -- laid back, neutral, warm, etc.? And any known reliability issues? I'm in USA and older Meridian amps aren't well known over here.
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    Sugden A21

    I tried searching, too many hits. I found a mint A21 for a good price, all original but working fine according to the owner. I think this is the original, not the series 2 How good is this amp for pure musical enjoyment? What concerns should I have? I assume (?) an immediate bias check and...
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    Kudos X2?

    I have a chance to pick up a mint pair of these at a great price. What's the sonic characteristic of these? Are they bright, forward, neutral, etc. And do you feel they'd be driven adequately with 20 watts of class A solid state? I listen at moderate levels generally. A forum search and...
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    Total System Gain Question

    I am considering an amp with 25dB of gain and 575mV input sensitivity for rated minimum output, and considering a preamp with 18dB of gain. So total system gain would be 43dB. My speakers are 88dB efficient. Is too much gain for a 2V line level DAC source? I don't know what the input...
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    Replacing DNM Reson spk cable with.. ??

    That's not saying much
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    Rega Amplifiers and “Simulated Class A”?

    If you read the recent IO vs. Brio thread, towards the end I posted about the actual circuit. As best as I can tell based on info from Rega, it's based on the John Lindsley Hood class AB circuit from 1970, as I recall. That circuit attempted (presumably successfully) to emulate class A as far as...
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    Top 5 Worst Sounding Integrated Amps

    Sigh. I'm well aware of that. Allow me to clarify. He doesn't listen to them either during voicing or even afterwards. Is that better???


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