Posts filed under: Collectible Stuff

QLS QA-660 Modification Plan

It has been quite some time since my last article on this blog. Quite a busy life (but that busy life pays this hobby, anyway). I tried to spend sometime few days ago to disassembly QLS QA-660 and planned some...
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Grayhill Rotary Switch as Stepped Attenuator

I have used several good brands of potentiometer. But once upon a time, I decided to stick with stepped attenuator. My first was DACT which using SMD resistor and configured in series. They were factory made, so just paid and...
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Cleaning DACT Stepped Attenuator

Living in such humid country, then corrosion is always around. I hate it, frankly speaking. But no choice 😉 I try to ignore such corrosion (and throw away my ‘perfectionist’ habit), but when it comes to my DACT Stepped Attenuator,...
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Duelund VSF Cast Ag (Silver) Lead-out Upgrade

I bought this Duelund VSF Cast Ag (Silver) around 3 years ago. I think Duelund was not as popular as now at that time, but still this Ag (Silver) version was quite pricey that time (but now if I see...
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Evening Soldering Practice: LME 49720HA

It’s been quite some time since I play with small soldering job. Time to practice a bit more. On the same time, I have to solder my LME 49720HA to the PCB board converter. So, let’s heat up the hand...
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Asus Xonar Essence One (E1): Almost Done…

After this process, now it’s time for the audio board to return to its original place. Time to plug her back. The final touch is to assembly the power supply board and the new capacitors. It will take some time...
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A Troop of Capacitor

For Asus Xonar Essence One modification 😉 Best on the class, perfect on their position....
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AD825 and LM49720

AD825 has been my favorite opamp for quite some time. But seeing the new trend of LM49720, I think it’s gonna be a good idea to have a try. From my experience, AD825 should give a warmer sound with analogue...
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MJ Technical Disc Vol. 6

There is a big surprise by MJ Audio Magazine this month. They provide a Technical Disc for their readers. There are total 16 amazing tracks, recorded superbly. I’m quite surprised to hear how the Teresa Teng (Track #10) and Track...
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Preparing the Layout…

Yes, I’m kind a lazy guy when it comes to realization (or finalization) of my DIY project. But I think I’m gonna (or I have to) be serious to finalize this… Well, at least I have finished the component layout....
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DIY Battery Power Supply for Sencore LC102

If you have read my previous article regarding the Sencore LC102, definitely you will notice that I have no power supply for this unit. After searching around, it seems quite impossible to get the original power supply (especially I’m living...
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Dedicated Soldering Iron

Call me a perfectionist (or paranoid or retarded, like some people usually call the ‘audiophool‘), but I always keep my soldering iron only for certain type of tin solder. The first one is dedicated soldering iron for WBT tin solder...
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