Jazid

Wammer
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Jazid last won the day on October 16 2015

Jazid had the most liked content!

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83 Excellent

About Jazid

  • Rank
    Wammer
  • Birthday March 7

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

1,259 profile views
  1. Seems like a faff. Why not get drunk and screw up your cantilever the time honoured 'fun' way? Sent from my BLA-L09 using Tapatalk
  2. Also, especially with 'NOS' which for many simply means old, there is fatigue in a multitude of ways all of which play into the equation, and the ratings of the circuit rather than the valve. Old kit often ran valves conservatively because they were expensive, then through the 50s and 60s when they got cheaper people ran them at the edge of their performance envelope for ultimate output, also into the 90s with the return to the 'valve sound' when good stock was still both common and cheap. Now designs that torture valves are going to test the limits of what these components are capable of and expose the weakest. Sent from my BLA-L09 using Tapatalk
  3. To cut to the chase, if you don't go out and listen to alternatives you are most likely to be disappointed. We can't tell you what you want to hear which is "A 10% better than B, C 30% better than A", and since you're not dissatisfied anyway the upgrade path is not clear to you, so how are we to help? With words? You have dealers, there are bake offs, Wammers are always friendly and willing to let others listen to their systems. Footwork will give you what words can't which is experience. Even then we all make mistakes, just open eyed mistakes! So saying, if the Io1 plus SUT isn't an upgrade in all departments I'll buy a hat and eat it. May not work for you for reasons that should be clear at this point, but it's certainly a cartridge to build a system around. I know I have. Sent from my BLA-L09 using Tapatalk
  4. I think the words used need to be changed to "By what margin has illegal downloading and legal streaming been modified by this 'news'." Sent from my BLA-L09 using Tapatalk
  5. Jazid

    Valve info

    GZ32 was enough to power a quad 2 monoblock to its form of immortality, a GZ34 seems overkill in a Preamp really... Sent from my BLA-L09 using Tapatalk
  6. I'd say that if you like the Nagaoka type of sound a DL103 is a nail on. I have just been listening to my Zu bodied version into 46 ohms into a new head amp I just picked up, and the presentation is frankly breathtaking, far better than I've heard it before. I know it's a lot more than the standard Denon but the standard model can be easily modded in many ways and as stated in a previous post can be upgraded either with a paratrace or even go full fat with the Ruby cantilever and paratrace. Icon stages have bags of gain so adding a simple resistive divider to halve the input impedance would give you a similar load and plenty of volume. Also IMHO for the mk2 at least which I owned it was a small smidge bright so will balance out the 103/Nagaoka nicely. Sent from my BLA-L09 using Tapatalk
  7. Jazid

    Valve info

    Actually, to murky the water a little bit the 5R4GYB is rated as accepting 20uF smoothing cap (vs 40uF for the GZ34 series), I don't know about the '5R4GYS' variant. But as Richard says, other parameters are also different enough to warrant checking with the manufacturer... Sent from my BLA-L09 using Tapatalk
  8. Jazid

    Valve info

    Do you mean 5AR4GYS or 5R4GYS? I can find no reference to any 5AR4GYS. This is significant. The 5R4 series is not completely interchangeable with GZ34/5AR4 series, but any of the GZ34/5AR4 series is interchangeable with any other. Differences in the various suffixes withing each type indicate durability/warm-up time/vibration resistance/bulb shape &c, nothing to realistically affect hifi use. 5R4 is a different beast and will probably not survive for long in a circuit designed for GZ34 family.The reason is the valve is designed for a maximum capacitance of 4uF whereas GZ34 will take much higher capacitances in the smoothing chain. Of course if you have a choke smoothed supply then this may render it suitable. So a circuit diagram is required to check suitability (or ask the manufacurer). Please advise about which type you have?
  9. Jazid

    Valve info

    5AR4GT and GZ34 are the same thing, European vs American name. This is why they are usually branded with both names on the valve or at least on the box. If you find one sounds better than another then fine, enjoy, it could be the individual valves performances are subtly different from each other. Might be best if you're rolling to avoid the old Chinese 5AR4 which have a rep for short life before arcing and causing damage downstream. Sent from my BLA-L09 using Tapatalk
  10. The gain control won't affect the NFB dial. I'd set the NFB to maximum, listen for a few days to get an idea, then try it on half way for a few more days, then adjust up or down as suits. Since it might affect more than the distortion of the amp there's no way of knowing what will work best for you. Have fun and happy sailing! Sent from my BLA-L09 using Tapatalk
  11. It is a posh fuse: blackens blacks, lifts veils, and makes you revisit your music collection. If you believe in such things. What I hope is that it still functions as a 10p BS rated fuse does which is to blow if excess current passes in order to prevent damage, or even potentially a fire. I am as keen on a rabbit hole as the next chap, but mains wiring and its associated componentry is not a destination for me, it is rightly controlled by legislation and without good reason best left alone. All IMHO, and good luck with the sale to whoever is doing so... Sent from my BLA-L09 using Tapatalk
  12. As above, make a list of what dissatisfied you AND a list of what you like best about your current system. If you go listening it's easy to hear what another set up does better, but takes time to know where the new compromises reside, and what you are losing. Personally I'd look at room treatment first, it will be cheaper, more effective, and allow any future upgrades to be easier to assess. YMMV &c [emoji16] Sent from my BLA-L09 using Tapatalk
  13. Jazid

    Valve info

    Ah, fully balanced [emoji106], seems like you're going to need 4 of them to get started. One more required... I'm on holiday but will have a look when I get back next week. Where are you based, UK? Sent from my BLA-L09 using Tapatalk
  14. As far as I can see your cart has a specified output of.0.3 mV at 5cm/sec and a recommended load of >50 Ohms. With the Silver core at 10:1 you are getting 3mV output into 470 Ohms, something of a mismatch. I'd have thought a 20:1 SUT would be a better option showing 6 mV output into 120 Ohm. You can probably borrow one from a dealer to try and see if that helps, or there's plenty about to choose from? If it works then this is a near cost neutral option with your current SUT in trade. Sent from my BLA-L09 using Tapatalk
  15. Jazid

    Valve info

    They look real enough to me. They are double triode, and so the Sylvania measurements are split into anode current (Ia) and transconductance (gm) for each triode section of each valve. Without knowing the operating points and parameters of the testing machine it is impossible to make much of these results, unfortunately this is absolutely normal practice [emoji849]. The minimum new figures would be gm 2.6mA/V and Ia 9mA at 250 Volts anode and - 8V on the grid. However, what I would expect to see from a charlatan would be figures for each section which are near on identical, the fact that these are not suggests to me that the seller has tested them at specified operating points using fixed bias voltage and faithfully recorded the results (but still without the operating points). If so these are good results as reducing the higher Ia to 9mA will also reduce the gm to bring it close to the other section's results. Rest easy! 5692 are lovely and rare valves but not identical to 6SN7, they will not take the same voltages or level of abuse, I suggest using them in the first stage only to benefit from their lower noise, getting a handle on the sound, and then experimenting with substitutes. Enjoy [emoji16] Sent from my BLA-L09 using Tapatalk