Jazid

Wammer
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About Jazid

  • Rank
    Wammer
  • Birthday Private

Personal Info

  • Location
    London
  • Real Name
    James

Wigwam Info

  • Turn Table
    Micro Seiki
  • Tone Arm & Cartridge
    AN/Io
  • SUT / Phono Stage
    AN/Art Audio
  • Digital Source 1
    Runs Windows 7/64
  • DAC
    AN/Sabre
  • Pre-Amp
    SJS/Bottlehead
  • Power Amp/s
    Tron/Leak
  • My Speakers
    AN-E
  • Trade Status
    I am not in the Hi-Fi trade

Recent Profile Visitors

1,025 profile views
  1. Jazid

    Valve info

    Hi Tarzan, No, I don't have direct experience of 6N1P because I have an impossibly long list of DIY circuits I want to build, few of which (in reality) I ever will. So my list of valves is long but any info I provide second hand about sonics is simply that - hearsay. If I have direct experience I make sure to refer to it [emoji846] So saying in my valve regulated HV PSU the 6n1p is not an acceptable sub for the E188cc, it simply doesn't work. A pity as what I do need is bloody expensive [emoji857] and rare. Luckily I have a stash, so I'm safe unless I kill myself with the 1kV output... Sent from my BLA-L09 using Tapatalk
  2. Jazid

    Valve info

    Many variants - 6N1P, 6N1P-EV, 6N1P-V, 6N1P-VI. There were some made in Novosibirsk, News (or Nevs) factory as well as Kaluga, Voshkod and branded Sovtek, Svetlana, Reflektor and probably others as well. I have an Anod, Diatkovo valve of this type and have seen others from Orzep, Orel. As far as I can see there appear to be two slightly distinct bottles - a shorter bottle form and a longer bottle form, and News factory has flat getter plates whereas the others have (what I call) flying saucer getter plates, but there's very little in it - maybe factory tolerances?
  3. Jazid

    To preamp or not

    I don't know your DAC but if the balance is out it could be a damaged chip as likely as anything, and if so you would honestly be better off getting it properly fixed. I suppose a resistor might have drifted massively off spec and in that instance your resistor trick might be feasible, but to me honestly it looks like a bodge. Sent from my BLA-L09 using Tapatalk
  4. Jazid

    To preamp or not

    But it may also take away room on which a(nother) turntable might sit. Testing times [emoji848] Sent from my BLA-L09 using Tapatalk
  5. Jazid

    To preamp or not

    It's more about matching gain. If you are happy then leave well alone (I am the single worst offender here, I don't follow my own advice [emoji849]). It's a bit of a merry go round. If the power amp is low gain you'll need some oomph from an ACTIVE pre and benefit, but if like most it has a sensitivity of 1.4V for full output then it won't. TVCs are a red herring in this context as you have a volume control already. I personally like digital volume controls as they are more 'transparent' and less reactive in the system in my experience, others disagree. No, under no circumstances can an extra stage add clarity Sent from my BLA-L09 using Tapatalk
  6. Jazid

    What light should i get to read stroboscobe

    Or start with this: https://cpc.farnell.com/imo-precision-controls/neon-240v/neon-240vac-lamp/dp/MC00213?st=Neon%20bulb Sent from my BLA-L09 using Tapatalk
  7. Jazid

    What light should i get to read stroboscobe

    All you need is a neon bulb and appropriate PSU, you can repurpose one from loads of old appliances and play... Sent from my BLA-L09 using Tapatalk
  8. Jazid

    Valve info

    @newlash09 a lot of people prefer manual bias circuits sonically, they lose the bypass capacitor on the cathode. I am not sure I care on that front but it's definitely not a bad thing. Once warmed up the valves should hold bias without drift and not be too far to one end of the bias pots travel. If they don't its time for new ones IMO, even if just for safety. Nice looking amps, there's some proper iron in them, I suspect they can deliver all the KT88 has to offer, I am liking [emoji16]. Sent from my BLA-L09 using Tapatalk
  9. Jazid

    Valve info

    Same difference Richard. Good when they're good I understand, just watch them (which is boring), I'd rather be distracted! I must admit that I never got the Russian obsession with gold grid wires: European, American and Japanese manufacturers seemed to have done ok without them. One milligramme of gold wire in a vacuum seems to be a strange selling point? Sent from my BLA-L09 using Tapatalk
  10. Jazid

    A Single Valve OTL

    A belated thanks for this. 15V seems rather do-able. 130 ohms is a stupendous plate resistance and with the gain already there (with I assume modest global feedback) a treat for the ears. I know it's not your present direction but presumably a pair of these valves would make one mother of a push pull amp? Sent from my BLA-L09 using Tapatalk
  11. Jazid

    A Single Valve OTL

    Aha, thanks for that. Yes I've seen the type mentioned but not actually used. Things that look like that (purposeful) have a habit of costing a bit, they are stout looking valves! What is the plate resistance like and, if I may ask one more question, what is the voltage relative to earth of the output? Nice amps, in fact nice looking system [emoji3] Sent from my BLA-L09 using Tapatalk
  12. Jazid

    Valve info

    I have done way more 300b tube rolling than is healthy, have read the various shoot-outs online, and conclude that the effect is amp/circuit topology dependent rather than manufacturer dependent. In my Tron SET the best reasonably priced 300b is from JJ, incidentally they also worked equally well in another member's AN P4 after he'd heard them in my system, and I can confirm they sound very decent in my PP 300b monos as well. My personal observation about Sovtek 300b is that they are just not reliable enough to be worth the risk, the JJs are rock solid. Many seem to have had one Sovtek go wrong, and I have measured only two malfunctioning 300b tubes (out of maybe 50) and they were both Sovteks. Not statistically significant of course and YMMV. As a reference to compare my sonic findings I use AVVT 32b usually, with WE 300b wheeled out for high days and holidays.
  13. Jazid

    A Single Valve OTL

    Those are meaty tubes, what are they? Sent from my BLA-L09 using Tapatalk
  14. Jazid

    Name of switch type, marantz ?

    They really are shite, it must surely be built in obsolescence. I attempted to restore an amp with these switches and they all just fail, one after another. It isn't a question of a bit of contact cleaner; open one up and you will see that they cannot last, they are so poorly made. Might explain the regularity of junked Marantz gear in the local recycling centres that I see and feel no wish to rescue. Sent from my BLA-L09 using Tapatalk
  15. Jazid

    Name of switch type, marantz ?

    In my (limited) experience Marantz seems to have a love affair with crappy unobtainable Alps sliding switches. Maybe it guarantees a further amp sale after a few years? Sent from my BLA-L09 using Tapatalk