Monthly Archives: July 2011

Aikido PreAmp Upgrade: Switches

Last upgrade, the switches. Basically, in most tube application, we will use two switches. The first is the main switch which will control the main AC voltage to supply the main transformer. The second one is the one which commonly...
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Aikido PreAmp Upgrade: Sowter Custom Choke Input 30H / 75mA

This is the final choke upgrade that I’ve been waiting for quite long time. After some discussion on the phone with Brian (1 day before his birthday), finally I finalized the order. Custom made from Sowter UK, a Choke specified...
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MJ 300B/2A3 Special Edition

A special edition of MJ Audio Technology Magazine from Japan. A must have for 300B/2A3 lover! Quite expensive, especially if you buy it outside Japan....
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JimmyAuw.com Reference CD #1

After a long journey listening hundreds of tracks, finally I come up with JimmyAuw.com Reference CD #1. This CD, off course due to law regulation, are made by me and only for my own private collection. I use it to...
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My Four Tweaking Tapes

To tweak a lot of things, usually I reserve a good set of tweaking tools. One of them is the tape. The function, mostly, is to seal something (wire/chassis/transformer) in order to prevent unwanted outsider interference to come in. During...
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Aikido PreAmp Upgrade: Chassis

Not yet finished chassis. Quite huge for a preamp, around 42×42 cm in size. Some copper sheet shown on the picture for some section on the top plate....
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Aikido PreAmp Upgrade: IEC, Resistor, RCA, Hook-Up Wiring

The upgrade not yet ended. I still have something to finalize my Aikido PreAmp. I go to upgrade some section in order to make it firms before fitting it on the new chassis. Here we go. First, we will install...
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Aikido PreAmp Upgrade: Electra-Print Custom Choke 30H / 75mA

Not just Lundahl here, I also ordered custom choke from Jack/Electra-Print. I contacted Jack and asked him to create a Choke, with requirement to be placed in Input position. He offered me a VPI technique which (according to him) enough...
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Old AD1865N and New AD1865N-K

AD1865 was build from some different factory around the world. Some may have from Malaysia, some from Philippines, some maybe from anywhere around the world. I collected some old AD1865N, probably from year 90’s and some N-K series from 2000’s....
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Aikido PreAmp Upgrade: Lundahl LL1673 / 20H / 100mA / 60 Ohm DCR

I’m ongoing to rebuild my Aikido Preamp which has been suspended for quite long time. The target is simple: a complete wood chassis and some upgraded parts then we are done (no more upgrade or whatsoever for this Preamp). You...
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