Recent Posts

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Telefunken 12AX7.  They have a reputation and the price to match, but i find in general these valves overrated, the smooth plates 12AX7 have the typical telefunken house sound, pretty, sweet,  light, clean, and airy, and in the right place beautiful, but lacking a little in body and warmth and most importantly timbre, apparently they say the rib plate is fuller with more body than the smooth plate, and they sell a little cheaper. Because they have a very distinctive sound they can be very handy in tuning a system. I found they worked brilliantly in my old Convergent audio technology (CAT) mark 2 preamp, just by putting in a single smooth plate 12AX7 in one of the CATs 10 valve positions, without it the preamp was ordinary, that valve just had the correct flavor in the CAT. The rule is you cannot use a full house of telefunkens in any superbly tuned system as with all valve brands, it's always a mix and match scenario. I own telefunken 12AX7s because they are important in my tuning arsenal but generally keep away from buying too many, problem is you must own them to understand them, and that is the key to use them in the right place. Picture of a smooth, then a rib plate Telefunken 12AX7. Always look for the diamond logo between the pins before buying.
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Let's talk about a mullard 12ax7, 14mm short plate 1960s plus, these are very good sounding valves, and the one to get has copper rods, they are much harder to find than the non copper variety. These 12AX7s usually sell for half the price (or less) than the long plate versions. Again look for the Mullard Blackburn code on the glass and as you can see in the 3rd picture these 2 non copper versions are dated Blackburn 1969, These mullards copper and non copper are a very good all round 12ax7 and well worth the money.
i must look in my shed i think i have some  8)
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Let's talk about a mullard 12ax7, 14mm short plate 1960s plus, these are very good sounding valves, and the one to get has copper rods, they are much harder to find than the non copper variety. These 12AX7s usually sell for half the price (or less) than the long plate versions. Again look for the Mullard Blackburn code on the glass and as you can see in the 3rd picture these 2 non copper versions are dated Blackburn 1969, These mullards copper and non copper are a very good all round 12ax7 and well worth the money.
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Capacitors / Re: Duelund Cast Vs VSF Capacitors
« Last post by stevenvalve on August 09, 2017, 07:59:36 PM »
I have been asked what is the right direction to run the Duelund VSF Capacitors, That of course is dependent on the direction of signal. Here is one of my leak amps with the caps in the correct orientation and it's the difference between brilliance and ordinary. You can see they are opposed for each stereo side. In this case the lead heading in the direction of the writing on each Duelund goes to the valve, and you would think that the valve (EL84) is heading to the output. I would certainly try these caps in doth directions and use the best accordingly. Remember i have not tried the direction aspect in speaker crossovers, but in electronics it's critical and could be the same result in crossovers.
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Other DACs / Re: The Line Magnetic LM-502CA Dac
« Last post by stevenvalve on August 05, 2017, 12:04:37 AM »
A few have brought these after reading bryans comments, and then did the comparison, But ultimately there wasn't one. it is a good sounding DAC, but not magical. Shame because its Cheap. But hotted up it may cut it.
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Cables / Re: Holy wire to build your killer Stuff
« Last post by stevenvalve on August 04, 2017, 11:57:26 PM »
Its always fun trying different wire and stuff, and usually on the cheap. but don't you get a kick out of it when you strike gold.
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Other DACs / Re: DDDAC 1794-NOS 24-192
« Last post by stevenvalve on August 04, 2017, 11:52:32 PM »
Like all great DACs, its really depends on the system, the type of music you play, the quality of the CD, Your own prejudices, it is often so CD dependant.  Never ends.  There is often no best with the top contenders, and even then, ten people with 4 different winners.
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Cables / Re: Holy wire to build your killer Stuff
« Last post by data on August 04, 2017, 11:00:31 PM »
Getting back into it I see, Mario  8)

I'm having a bit of fun helping others, but nothing happening with my system.

Tis all good though.
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Other DACs / Re: The Line Magnetic LM-502CA Dac
« Last post by yarhevarhe on August 04, 2017, 10:14:02 PM »
Does this DAC sound as good as the KillerDac?
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Other DACs / Re: DDDAC 1794-NOS 24-192
« Last post by yarhevarhe on August 04, 2017, 10:12:20 PM »
Does this DAC sound as good as the KillerDac?
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