Recent Posts

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Tubes / Re: Western Electric 300Bs 2019 new production
« Last post by guru on December 19, 2021, 11:37:07 PM »
You still have the talisman Mario, sna has your name ringing through the corridors tonight. Cheers.
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Transports / Mac Mini
« Last post by vitavoxdude on July 29, 2021, 06:56:06 PM »
Is anyone else on the forum using a Mac Mini?  After reading how PS Audio owner Paul McGowan used one for some of his replay it pricked my interest.  So out I went and bought one.  I now use this to stream Tidal hifi (quality?) :'(

The USB outlet feeds into a Audiophellio which then feeds into the RCA input of a Musical Fidelity DAC.  Whilst this is not the same quality as a CD spinner into the same DAC it does provide access to a huge music catalogue for around 40 bucks a month.  The replay is better than elevator muse-ic  :o but is a long way short of the KD fed properly.  :-X

Be interested to hear how others have refined this form of music replay as it currently falls short of greatness IMO.
Thanks  ;) ;) ;) ;)
V
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Amplification (Pre/Power) / Re: opamps
« Last post by vitavoxdude on July 29, 2021, 06:30:43 PM »
Hi Tuyen

Yes, I have been through soo many opamps in the last 35 years, it's not funny.  the NE5532 and 34 types are littered everywhere due to low cost and I have been replacing them for many a year.  I was shocked when I decided to open my expensive SACD player to find them in the output stage, actually, I was as annoyed as all hell as the unit in question was supposedly upgraded at great cost (another scam for some RF shielding paint which had been brushed on by the looks of a 4 year old).

No doubt there will be many saying that drop in replacements will not always work, and indeed in some cases, oscillation will occur due to poor power supply and feedback arrangements  :-[.

I have now gone over to the dark side  :o and can whole heartedly recommend the Sparkos range of devices.  I use their regulators too as it provides a much darker background (read better signal to noise ratio) which allows the finer detail through with greater ease and less smear.  Their opamps breath a whole new life into the results similar in going from a 1000 dollar amp to a 5000 dollar amp or more and whilst not cheap, they do enable the lifting of the overall sound by around 20 to 25% in my ratings, thus they have my full recommendation. ;D ;D ;D ;D

You will find more sound stage depth and width, oh and height too, easier to hear into sound with better everything as far as I am concerned and represents the finest there currently is.  Big claim, but I have now used these devices in several different pieces of equipment and every time it has been a grin inducing result at modest cost.

IMO they rate higher than the Burson range which can be a brighter enhanced treble detail and I have all of theirs to directly compare too along with the original Sun and Earth range from the originators of discrete opamps.  AD 845's are not too bad and cheap.
V
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Reel to Reel / Re: R2R music
« Last post by stevenvalve on October 23, 2020, 06:18:21 PM »
Here is an interesting Master tape Studio Look at the Micheal Femmer you tube clip

http://chasingthedragon.co.uk/index.html
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Capacitors / Re: Miflex paper in oil caps
« Last post by brenden on July 25, 2020, 09:52:04 PM »
Just a couple of  comments  re bypassing . I dont   recomend bypassing in signal path unless its bypassing  electrolytics  such as the back  to back type in many  early cd players like the Marantz  cd 94 etc ,and its not perfect but still an improvement over the inferior electrolytic  on their own . , but you HAVE   to use a .01 uf  .  It may be only one decimal  point  but will make the difference from  being great to crap .    .Miflex dont make a .01 uf unfortunately  . In fact i did try their .02 uf cap as a bypass  and that didn't sound right either .Thats how  critical  it can be .  Secondly , many cheaper film caps can be a bit bright compared to a jupiter copper foil  for example  and could  tilt the  the upper frequencies up a bit . 
    Where bypassing works ,  is with electrolytics in power supplies . Only use a .01 uf  copper foil like Duelund  or  Jupiter ..  they have come down in price now  so no one needs to use an inferior .01 uf cap . 
    If you are using  a decent output  cap  no need to bypass in my opinion.  . My vsf caps in the 94 mk2  are not bypassed .
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Capacitors / Re: Miflex paper in oil caps
« Last post by stevenvalve on July 23, 2020, 06:35:41 PM »
Hi Bypassing caps is an old idea because most older vintage oil caps are not that good, so often the performance improved with a bypass, with the new stable of excellent caps bypassing just does not work for me, so i am not at all surprised
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Capacitors / Re: Miflex paper in oil caps
« Last post by data on July 21, 2020, 01:13:31 AM »
I removed the Miflex copper caps I had by passing the Andyn's, turns out the by pass was smearing the sound, over all much better with just the Andyn copper caps without them.

Kicking myself for putting them across the Andyn caps, sound is so much better without them  :o

Now, I wonder if Duelund's new JDM range being released will be more like the Cast or the VSF's, hope someone here reports after trying them  8)
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Resistors / Re: Resistor games
« Last post by Jehuty on May 05, 2020, 02:54:31 PM »
New Audio Note resistor coming soon, using the tantalum's sister material called niobium. Not cheap at GBP 19.50 a pop but I really hope they sound better or at lease similar to the old Shinkoh tantalum.

Link: https://www.audionote.co.uk/niobium-resistors

Quote:
"We have a new non-magnetic resistor coming soon. They are 2 watt, non-magnetic but rather than our usual Tantalum resistive layer we chose its sister (daughter material, if you study Greek Mythology) Niobium.

Niobium has never been used in a resistor as far as we know. We looked at its properties and felt it was worth testing, and discovered that it is finer and more even sounding than Tantalum.

As is the case with all of our resistors, they are manufactured using the sputter target process, which makes a much better sounding resistor but is also more difficult to use. Niobium is even harder to use than Tantalum as the temperature co-efficient of this material is far more difficult to control in production.

Its sound is very complimentary to Tantalum if used carefully in sound critical parts of the circuit.

Price will be 19.50 each for the 2 watt version. We do not yet have the 1 and watt versions as the manufacturing processes are still under development, but there will be a 2 watt silver Niobium resistor coming next.

We will have the following values available: -
100R, 120R, 150R, 180R, 220R, 270R, 330R, 390R, 470R, 560R, 680R, 820R
1k, 1k2, 1k5, 1k8, 2k2, 2k7, 3k3, 3k9, 4k7, 5k6, 6k8, 8k2
10k, 12k, 15k, 18k, 22k, 27k, 33k, 39k, 47k, 56k, 68k, 82k
100k, 120k, 150k, 180k, 220k, 270k, 330k, 390k, 470k, 560k, 680k, 820k
1M

Contact us directly for ordering and availability information."
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Amplification (Pre/Power) / Re: Leak Stereo 20 Modifications
« Last post by stevenvalve on April 12, 2020, 01:58:56 AM »
I have lots of toys for sale, i will list them
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Amplification (Pre/Power) / Re: Leak Stereo 20 Modifications
« Last post by Jehuty on April 11, 2020, 10:47:49 AM »
Yes, without a doubt top notch mod with the best parts available. But the base form of Leak 20 is relatively the same, as long as the transformers are all in good condition. Those standard Leaks are the ones I want and can afford. Modding is part of the fun, subject to the availability of funds and parts. Speaking about parts, any Jensen 32+32uF or 47+47uF you want to sell? I missed out getting them while I was hifi hibernating and Jensen is no more  :( :(
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