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  1. CJG888

    Mystery NOS ECC83

    Back in the 90s, I bought a number of these ECC83s from Centre Electronics in Birmingham (UK). They are NOS (plain white boxes), apparently Yugoslavian, and look a little like Mullards. They have an ‘O‘-getter. I wonder if they might be Ei? Any ideas? Sound is both warm and detailed. Labels...
  2. CJG888

    OTL output capacitors

    Just one question for all those OTL tube amp experts out there: By their very nature, OTL headphone amps can put out DC at the headphone socket unless a coupling capacitor is used on the output. Unfortunately, as this tends to be quite a high value, it tends to be a bipolar electrolytic. Of...
  3. CJG888

    What happened to my tube? Leaking envelope?

    At the weekend, I turned on my main system, and noticed that the output of my CD player (Consonance CD 2.3 MK. III) was getting lower and lower, and that the dynamics were becoming compressed (only this source was affected). On opening the player, I discovered that the tube in the output buffer...
  4. CJG888

    Upgrading from DX50: DX90, Hifiman HM-650 or keep the DX50 as a transport and add a DB2?

    The rig will be my hotel room system, so transportability rather than portability is key. Most of the time, I will be using a single-ended external amp (iBasso P4, Tube Amp BL-2 or Elekit TU-HP01) with full size cans. Occasionally, it will be used standalone with IEMs (although I generally use...
  5. CJG888

    Is ALAC genuinely lossless?

    I have heard a rumour that ALAC, unlike FLAC, is not genuinely lossless, but uses an element of lossy compression. Does anyone know if this is true? I really don't want to have to re-rip all my CDs...
  6. CJG888

    iPod Classic 160GB keeps freezing. Any ideas?

    I recently restored my 3 year old iPC and re-loaded all my content onto it. Since then, it periodically freezes up, not responding to the touchpad. Sometimes it keeps playing, sometimes it goes silent. To recover from the freeze, the only method is to reboot, using the enter key and the "up"...
  7. CJG888

    DT-1350: a worthwhile step up from the HD25, or a sideways move?

    Having more or less arrived at a collection of fullisze cans (dynamic, planar magnetic and electrostatic) which meet all of my musical needs, I have turned to updating my portable system. The first step was the acquisition of a Sony PHA-1 in order to enjoy the capacity and UI of my trusty iPod...
  8. CJG888

    Starting Point Systems portable NOS DAC

    Has anyone tried this DAC? It seems to be the only commercially available portable (i.e.small, self-contained and battery-powered) NOS DAC out there: http://www.ebay.co.uk/itm/Non-Oversampling-DAC-TDA1543-DIR9001-96kHz-SPDIF-Coax-Optical-9V-NiMH-charger-/200858459050? I am considering using it...
  9. CJG888

    Audio-gd SA-31, Project Sunrise 2 or Lake People G109S for HE-500 and HD600?

    At present. I am using an Opera Consonance Cyber 20 (transformer-coupled EL-84 SE amplifier, outputting 1W into 32 Ohms) with these two headphones. I find it is a very good match for the HE-500s, only sometimes I wish for a brighter, faster, more incisive sound. With the HD600s, I enjoy the...
  10. CJG888

    ATH-EW9 Recable - worth trying?

    Has anyone here recabled a pair of EW9s? What did you use? How successful was it? How can the cans be opened up without causing damage? Thanks in advance...
  11. CJG888

    HD Files from an iPhone with FLAC Player

    Does anyone know if it is possible to output HD files digitally from an iPhone running FLAC Player, using a Pure i20 or Onkyo ND-S1 digital dock? I believe it is possible via CCK from an iPad.
  12. CJG888

    Portable can that sounds like an HD600;

    Lately, I have found myself spending an increasing amount of my listening time OTG. My current portable setup consists of iPod Classic 160GB -> Toxic Cables Silver LOD -> Blaze S-1 (a Chinese amp "similar to" the RSA SR-71A) -> Oyaide OCC cable -> HD25-1 II. I am broadly happy with the sound...
  13. CJG888

    Possible SR-71A clone?

    Does anyone know anything about this?    http://item.taobao.com/item.htm?id=16857732856   Apart from the obvious copyright issues.... does it look like it will work and provide some approximation of the original? Some of the soldering admittedly wouldn't meet RSA's quality standards.  ...
  14. CJG888

    Neutral IEM for Classical and Jazz with good soundstage and bass extension

    At the moment, I am using Ety HF5s with either an iBasso P4 or an O2 (iPod Classic 160GB as the source) as my portable rig. I listen exclusively to classical (orchestral, chamber and opera) and jazz. Whilst I am happy with the speed and resolution of the HF5s, I sometimes find the sense of scale...
  15. CJG888

    iBasso ES9018 desktop DAC

    According to iBasso's website, this is due for launch next month. Is anything (e.g. projected price point) known about this product yet?
  16. CJG888

    Cable Upgrade for HD 25-1 II?

    Does anyone know of a cost-effective cable upgrade (approx. 2-3m in length) for the HD25, ideally asymmetrical (fitting into the channel in the headband like the original)? I am aware that it is possible to invert the ear cups and connect any HD6XX-compatible cable, but that seems like a less...
  17. CJG888

    Dugood HDAP-01D - a HD-capable music server on the cheap?

    Does anyone have experience of this device:   http://www.dugood.com/Engish/product1.files/HDAP-01D.htm   It seems almost too good to be true at the price! How does it actually sound? Is it a better desktop solution than a DAP+dock? How about the analogue outputs on the HDAP-01 (the one...
  18. CJG888

    How good is the iPad2's DAC?

    Just a general question about the iPad2: I have heard that it has a superior DAC to the iPod Classic. Given this fact, is it more sensible to listen via a high quality LOD and amp, or is it worthwhile connecting a portable DAC via the camera connection kit? If the latter is the case, would a...
  19. CJG888

    Clear, transparent IEM for classical and jazz (Ety HF5 or RE0?)

    I am a happy GR07 user (QLS QA-350 / custom ZY silver interconnect / iBasso P4), listening exclusively to classical and jazz. Whilst I am generally pleased with the sound (especially for jazz), I am increasingly looking for more treble clarity and transparency when listening to classical music...
  20. CJG888

    Battery problems with iBasso P4 "Warbler"?

    I have recently taken delivery of an iBasso P4 "Warbler". I am using it with the stock op-amp configuration, and with gain set to "low" (to drive GR07 IEMs). Whilst it sounds excellent (particularly in terms of soundstage and dynamics), the battery performance has been less than stellar! In...
  21. CJG888

    Opera Consonance Cyber 20 tube rolling

    I have just ordered a Cyber 20 here in China, at a local price of RMB2800 (about GBP280). It comes with fairly ordinary stock tubes (2x EL84, 1x ECC82/12AU7), apparently of current Russian manufacture.   I will be using it with HD600s, to listen to classical (orchestral and opera) and jazz...
  22. CJG888

    Getting the best out of HD600s (for sensible money)

    I am loking for an amp to drive my HD600s (musical tastes: classical, opera and jazz). Source will be an Opera Consonance CD 2.3 Ref. Mk. III (an upsampling player roughly equivalent to the CD 2.2 Mk. III available in Europe, minus the volume control on the single-ended outputs). The CD player...
  23. CJG888

    Switching from speakers to headphones: high-end options for classical and jazz

    With a baby on the way, it looks like the days of listening to classical music via loudspeakers at near-concert hall levels are over (at least for a few years!). Those (few) occasions when I will be able to listen will, inevitably, be late at night, and the use of headphones will be mandatory...
  24. CJG888

    Suitable Comply tips for GR07?

    I am extremely satisfied with the sound of my GR07s (on the end of a QLS 350 Mod. V2 or iPod Classic 160GB / Meier Audio Corda XXS), but am having trouble finding comfortable tips for them. The stock ones are of poor quality (frankly, I worry about the foam ones coming off in my ear!), and the...
  25. CJG888

    Mile high fi........

    I suppose this is a fairly obvious one, but has anyone given some lateral thought to the issue of an in-flight optimized system? Just as food and wines taste remarkably different at 33,000ft (cabin pressure, low air humidity etc.), it stands to reason that headphones will sound different under...
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