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Old 22nd July 2009, 01:41 AM   #1
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Default Aikido pre

I just wanted to share my enthusiasm with my recently built Aikido pre. This is an absolutely amazing design. It transformed my system. And I thought I had a pretty good system...
I'm speechless. It's so revealing that I had to reconfigure my subwoofer settings. I've used all of John's boards for this pre. The cap switching is brilliant. And the RTI caps are excellent. Today I was listening to the last movement of Beethoven's 9th by Karajan (Karajan Gold - DG) and I never heard so much information from that recording before. I love the performance but I never felt that recording to be great. Well, it doesn't mater anymore because it sounded wonderful.
I'm so addicted that I ordered an octal kit to use with some 12SN7's I've been collecting from e-bay.
I'm having the front panel printed. Nobody understand the 5 knobs in the front.
Anyway, here are some pictures of a very happy builder.
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Old 22nd July 2009, 01:53 AM   #2
Brit01 is offline Brit01  United Kingdom
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Well done.

Join the fan club. What tubes are you using?

What is the rest of your system?

btw. no pics showing
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Old 22nd July 2009, 02:14 PM   #3
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here's one:
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Old 22nd July 2009, 02:16 PM   #4
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and another...
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Old 22nd July 2009, 02:21 PM   #5
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one more
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Old 22nd July 2009, 02:35 PM   #6
Brit01 is offline Brit01  United Kingdom
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Nice work. Congrats.

Is that a SS power amp below?
What tubes did you roll? What currents and B+ did you configure them with?
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Old 22nd July 2009, 03:07 PM   #7
piero7 is offline piero7  Italy
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Welcome in the Aikido fans club!
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Old 24th July 2009, 12:13 AM   #8
Renron is offline Renron  United States
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Welcome to the extended family.
Aikido club of the world.

Ron
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"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3
"I fired up the prototype. Literally." The Prophet Pass.
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Old 31st July 2009, 01:38 AM   #9
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Quote:
Originally posted by Brit01
Nice work. Congrats.

Is that a SS power amp below?
What tubes did you roll? What currents and B+ did you configure them with?

Hi,

The box below s my DAC. My amp is a class-D UcD400 from Hypex. Good stuff!
I just finished an octal board a few days, B+ is 300V and current is whatever John recommends for the 6/12SN7. I'm using 12SN7's I collected from e-ebay. This circuit doesn't seem supper sensitive to tube differences. It always sounds good. I know have RCA 12SN7. But I have a bunch of others to try...

The previous board was the 5687 with 6CG7. B+ was 240V.

In my enthusiasm last week I managed to blow one of my ribbon tweeters. Already replaced.

Here's a picture of the new board.
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