Posts tagged with: preamp

Testing J&K Power Transformer

I have some spare time during this Christmas and New Year. Before I continue, I think I should say Happy New Year 2015 to all of you. All the best for us in the upcoming year. More fun stuff to...
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J&K Audio Design Custom Level 4 Power Transformer

After a long time waiting, finally I got this transformer on hand – myself. This is the Ultimate Level 4 Power Transformer from J&K Audio Design. You can read some detail here and here. My first impression was: Heavy! Each...
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Grayhill 7 Decks, 1 Pole, 24 Position Rotary Switch

I always have dream to have a separate and dedicated passive volume control. There was a time when I was offered to acquire few sets of Grayhill ‘M’ series rotary switch. Although it has 7 Decks which definitely overkill for...
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New Auricap XO Capacitor

So far, Auricap is one of my trusted capacitor brand – in power supply section. I still remember ‘few’ years back (when using this capacitor for the very first time) and comparing with Solen, Hovland, and Bennic XPP in my...
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Removing the Old Tube Socket

During the upgrading process, the old Ceramic tube socket also got new replacement to the Teflon one. The problem is, the process to remove the old tube socket will not be an easy job, as removing other parts. Why? Because...
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Aikido Preamp Make Over

As I’m about to move my Aikido Preamp to a new ‘home’ (I mean, new chassis), then it’s time to fix all the components used there. Before, I have tested several components on different section and later then I got...
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Prototyping Power Supply Layout for My Preamp [2]

Still remember the first chapter here? I have transferred the paper mockup into digital format. It didn’t take long time to do that 😉 Just need to send (or print) this format and send to the manufacturer. I’m quite sure...
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Wrong Calculation… (on New Aikido Preamp Chassis)

I did a stupid mistake. I ordered new chassis, but during the construction, I changed some parts and forgot if the new parts actually ‘lot’ bigger than the old one. Two most significant in terms of the size are Hashimoto...
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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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Duelund Interconnect 2.0 Rev2 vs 1.0 Rev1

After completing the construction of my Duelund Interconnect 2.0 Rev2 here, I decided to do some short comparison. My friend has Duelund Interconnect 1.0 Rev1. I think this gonna be a nice comparison! Direct to the stage, we have some...
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Tube Rectifier Filament Supply Selector

I this world, there are lot of tubes, with different filament supply. In most of my tube rectification application, I stand with two choice of rectifier, the one with 5 Volt filament (most Octal and UX type) and the others...
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Burn-in Rig Before Battle

I plan to compare some capacitors from Jensen and one from Audio Note. The two from Jensen are Jensen Copper Foil Paper-in-Oil (Paper Tube) and Jensen Copper Foil Paper-in-Oil (Copper Tube). From Audio Note, I have Copper Foil Mylar-in-Oil (I...
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