A friend of mine bought a new amplifier but he wasn’t pleased with the sound. He likes the aesthetic of older things, so he called me and asked if I could recommend a good old amplifier that could drive smaller speakers. The first one that I could think of was the venerable NAD 3020B. When I was young, this was the first affordable amplifier that actually sounded good. It’s not a power house by any means, putting out a (very conservative estimate) 2 x 20 watts. But the phono stage which is switchable for both MM and MC pickups is good, and the sound quality is excellent. So he scoured the used market and finally found a NAD 3020B. Unfortunately when he got it home, there was a loud hum from the output. So I told him to send it to me so I could fix it.
So I’ve been having problems with my iPhone 6 Plus for the last couple of months. The iPhone refuses to respond to touch and often starts to press by itself. It even called the emergency police hotline from one of my apps. Not good. It’s a problem that a lot of people has and is called […][Continue reading]
The results are in: I’ve been very busy with different projects and one of them requires a custom enclosure. So I thought it would be a good excuse to learn Fusion 360. When the Raspberry Pi 3 came out, I did some overclocking experiments. But I settled with just passive cooling with some small aluminium heatsinks. […][Continue reading]
I haven’t had time to update the blog because I’ve been busy designing a new headphone amplifier. There’s been a lot of development when it comes to operational amplifiers and I was curious about how well I can get an amplifier to measure using the latest technology. The op amp I’m using still hasn’t got […][Continue reading]