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Old 9th January 2012, 02:51 PM   #4121
galeb is offline galeb  Spain
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Hi Joshua_G

It's simply a current amplifier. I attach a link where it explains the Aikido pre-amplifier.

http://www.tubecad.com/Product_PDFs/...ereo_Rev_C.pdf

regards,
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Old 9th January 2012, 03:49 PM   #4122
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Quote:
Originally Posted by galeb View Post
Hi Joshua_G

It's simply a current amplifier. I attach a link where it explains the Aikido pre-amplifier.

http://www.tubecad.com/Product_PDFs/...ereo_Rev_C.pdf

regards,
I see there 2 cascaded SRPP stages, neither current buffer nor current amplifier.
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Old 9th January 2012, 04:57 PM   #4123
galeb is offline galeb  Spain
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Hi,

The second stage is a curent buffer
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Old 9th January 2012, 05:26 PM   #4124
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Hi,

Quote:
Originally Posted by galeb View Post
The second stage is a curent buffer
The second stage is a cathode follower with active load. I guess with some imagination one could call it "current buffer", but the more traditional name is fine IMNSHO.

The active load could have been used to improve the overall performance of the follower (White Follower, Gomes Stage) but is wasted here instead on fixing a problem (powersupply noise) that should not exist in the first place in well designed equipment.

The comparison between the much older Gomes Design and the Aikido has been done quite a few times (it is quite easy to do) with the Gomes invariably taking first place...

But for that you need to build the circuits and listen to them, not just run sim's and pick the "winner"...

Ciao T
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Old 9th January 2012, 06:41 PM   #4125
galeb is offline galeb  Spain
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I've called it "current buffer" to write faster with my ipad.....
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Old 9th January 2012, 06:46 PM   #4126
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Hi Studiostevus. I didn't because the time to build a pair. I can asure you that Takman work incredible. When I have some time and wire, I'll build a pair, then share with all the listening results. But now, with this set-up, I can easily win practically all the brands I've heard.
Hi guys,

If the gurú says "build your own honeycomb resistors because they are better", then that's what I do.

https://picasaweb.google.com/lh/phot...eat=directlink

https://picasaweb.google.com/lh/phot...eat=directlink

Cheers,
M.
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Old 10th January 2012, 09:47 AM   #4127
galeb is offline galeb  Spain
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Perhaps, oh almighty Zeus-ten Loesch, with your great intelligence and knowledge unlimited, you might illuminate our dark path and give us, not a scheme, but some idea useful, instead of criticizing the mistakes of others.......

Sincerely yours.......
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Old 10th January 2012, 10:36 AM   #4128
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Hi,

Quote:
Originally Posted by galeb View Post
Perhaps, oh almighty Zeus-ten Loesch, with your great intelligence and knowledge unlimited, you might illuminate our dark path and give us, not a scheme, but some idea useful, instead of criticizing the mistakes of others...
I did.

Convert your Aikido into a Gomes and have a listen. JB covered the Gomes circuit extensively, concluding of course that Aikido was better because it has better power supply rejection (it seems he is incapable of considering anything else to be a relevant quality) in his simulation and leaving it at that.

Ciao T
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Old 10th January 2012, 10:42 AM   #4129
erin is offline erin  Australia
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Originally Posted by roger57 View Post
For the I/V resistor, did you ever try the TX2575?
I found this to be one of the worst sounding resistors I ever heard. Just totally sterile. But that is just my opinion. YMMV.
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Old 10th January 2012, 10:53 AM   #4130
galeb is offline galeb  Spain
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I know you've did it, but some idea on other area, like oscillator, power supply, or maybe digital data from SPDIF receiver to TDA..........

Ciao G
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