THE ORRONOCO AUDIO DIY

In 2016, I have review  LG DVD Player DV-440  and the result is very positive. This DVD player has better in audio quality compares to the others. Especially compares to the over-hype  Pioneer DV-373S , the analog audio output from this LG is far better. Since I already have the external DAC, in this post I will try to answer about, do the digital audio out sound different? Let's find out.

The Sony Playstation SCPH-1002 I got here is the first model for UK market. This unit power by 220 volt AC input same as my country wall voltage rating. I've using it for years and it is have an issue at the lens unit since 2 years ago. I am now using DVD player with separate DIY DAC and satisfy with them already. But some how, I really want to revive this Sony to back to life again.

One things in mind when build a simple amplifier is by using an IC. It is very reliable and don't bother in too much complicated circuit like discrete transistor amplifier. It is not wrong, but not right either when you are planning for small 3 volt battery powered amplifier for this radio project. This IC amplifier could not working properly with this 3 volt battery.

I continue my post  here  about making the FM radio front end. The AFC out from it need to be connect to the FM modulator. In this project I using the very popular IC, it is LA1260. I also using the common potentiometer for radio frequency tuning instead of variable capacitor just like many commercial radio have.

It is started when I have spare time in home and try to figure out what is on my storage box. I usually throw my ex. DIY project to this big cardboard box. I think I will not use it, or I just explore something related to electronic device then put it in the box for future need. Sometimes like this day, I open up again the box and it is kind of nostalgic moments. So this is what I found.

As we know that finding the original 2SK170 & 2SJ74 is very hard now. Some seller might sell them in pairs for about US$50. I remember 8 years ago I bought this transistor only US$2 each. No wonder the price jump that higher due to the Toshiba itself who made this J-FET is already stop production for few decades ago. As long you get the genuine then it is good. But you might consider not getting the fake one for sure. Especially if you don't know how to check it visually, then I tell you the clue for it.

I want to fit the H2 generator pre-amp to my Topping Tripath TA2014 amplifier. This post is the following from my post here . The evaluation board is big and would not fit into this small case. So I remove all the H2 components and put them back to the smaller board like this one.

I remember watching the advertising from Sony NW-ZX2 in Youtube, they put the Sanyo Os-con capacitor as their marketing object that creates the superior sound to that device. Strangely, what I saw is they put it as DC blocking capacitor before the line audio output. The Sanyo Os-con is well known for their low ESR and good at filtering the power supply of digital audio system. No harm to use it on the audio signal line anyway but in this post, I have order several and I will put it as it should be, is at the digital power supply!