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JimL

High Rollers
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About JimL

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  1. I'm impressed (eye-roll). I read all seven pages of the Warwick Acoustics brochure and didn't learn one useful thing about the design other than it is balanced, which I assume means that it has two stators like every other electrostatic driver other than the Sonoma One. The specifications didn't include power draw, voltage or current output, or sound output capability, although the bias voltage is impressively high,. The chassis is significantly larger than the Sonoma One so I assume it has greater current capacity but there are no visible heatsinks, so I very much doubt it has the current drive capability of, say, a Carbon. I assume part of the cost is due to its integrated digital capabilities, but take the cost of a Carbon, double it for commercial considerations, and add the cost of a 009S, that still leaves about $10,000 for the digital part, which is a big chunk of change. And, unclear whether that is modular and upgradable or not - for that much dough I would want that capability. Not sure what the market for this is?
  2. As I recall, HI-FI+ also raved about the Trilogy H1, which was basically an Egmont at a ridiculous price. Ignorance is not always bliss.
  3. Yes, I just checked, so does appear to be a scam. However, there was this completed listing on eBay: https://www.ebay.com/itm/Trilogy-H1-Energiser-With-Free-Stax-SR009-Headphones-Worth-3199-UK-Warranty-/184083907188?hash=item2adc418274%3Ag%3AnJYAAOSwHX9d4W3L&nma=true&si=B5Bq21v%2B%2B7bRiJlbkPbCND2CIOo%3D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557 Price was 3750GBP including SR009 "worth 3199GBP" so the seller was saying the amp is worth 550GBP.
  4. Well, this is interesting. On eBay right now is a Trilogy H1 plus SR-009 for a Buy It Now price of $3000. https://www.ebay.com/itm/Trilogy-H1-Energiser-With-Brand-New-Stax-SR009-Headphones-Exceptional/324103691049?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649 Given that used SR-009s are going for around $2100-2300 on eBay (most recent completed transactions that actually were sold), this means the seller is willing to let a 5000 GBP amp go for $700-900. And he has >6000 transactions so appears to be legit.
  5. JimL

    Amplifier porn

    Yes, the joke at the time was the ultimate cheap Linn system was an LP12 into two strings attached to tin cans.
  6. JimL

    Hifiman Jade II

    So, a used HiFiMan Jade II amp in excellent condition (according to the seller) just went for $633 Canadian (approx $480 US) plus shipping on eBay. Given its list price as best I can determine from an internet search is $1599, the value is really holding up (NOT).
  7. Just for perspective, every time you walk across a carpet on a dry day, and touch your hand to a doorknob getting a little electric shock you are discharging a kilovolt or two of static electricity. .
  8. The original SRX schematic shows a 250k to 500k attenuator, but that is most likely due to it being designed to be driven by a tube source. As long as your source can drive 10k, which almost everything these days can, a lower impedance attenuator should be fine.
  9. JimL

    Speaker Porn

    Nice to get away from cones in boxes.?
  10. Sure looks like it - see top photo where there is a split volume control. Also second photo shows four sections to the volume control, which is what you would expect for a balanced amp.
  11. JimL

    Speaker Porn

    Hmm, I recognize the Quads of course, and some McIntosh amps and what looks like a Fisher 500C, and perhaps Dahlquist DQ10s behind? Don't know about the rest.
  12. IIRC, HiFi+ gave a rave review to the Trilogy H1, a grossly overpriced version of the 4 tube Egmont/TubeCAD circuit, swallowing hook, line and sinker the manufacturer's claim that it was a totally clean paper rethinking of electrostatic.headphone amps.
  13. JimL

    Hifiman Jade II

    Really looking forward to this.
  14. JimL

    Hifiman Jade II

    Appreciate the offer but I'm going to be away from home for a month or so visiting friends so, I'm out.
  15. JimL

    Hifiman Jade II

    So, the HFM "rebuttal" does have some interesting points. 1) 1k resistor outputs vs 5.1k for the Stax - no reason given for the change, presumably the cost for either resistor is the same 2) 2M resistor bias outputs vs 5M for Stax - again, no reason given, should be identical cost 3) op amp input vs discrete MOSFET input. Presumably for cost reasons. 4) output MOSFETS supposedly to increase voltage output capability, claimed very low capacitance, but part number not identified. Are we talking a cascode transistor (bottom) MOSFET (top) combo? Don't know. 5) the text says they are comparing two schematics, however they post the SRA-12S schematic but use photos of the circuit board instead of an actual schematic.
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