Almost three years ago (damn, has it been that long?) I bought an ASUS Xonar U7 sound card to get audio output while my laptop was hooked up to a dock. And now, three years later, that sound card has started acting up. Roughly, the problem is it often doesn’t get enough power and won’t come up—plug it in and it isn’t recognized. After unplugging and replugging it a bunch of times it occasionally has a chance of working. Eventually I couldn’t stand spending ages plugging and unplugging every day when I brought the computer home, so I decided to replace it. I had three requirements: USB powered, I don’t want to plug in a power supply Has audio input The DAC chip can’t be too crappy Has a headphone output jack I looked through a whole pile of Chinese-made DACs and couldn’t find one I was happy with. The biggest pain is that they don’t have audio input, and they can’t be USB powered either—they all make you drag along a big power supply…

A while back I had the Mojo modded and hooked it up to another computer as a DAC, so the laptop has been without a portable DAC lately. Figured I’d pick up something cheap as a replacement. The requirement was to get charge-and-play working as much as possible, instead of the Mojo dying on me every other minute. And the bar for sound quality isn’t that high either — just needs to be a real step up from the laptop itself, ideally without too much hiss. Obviously none of this compares to the high-end demands of mystic audiophile tycoon Wu Lao’er, who runs desktop amps straight into Xiaomi hybrid IEMs — the very setup that pulled him out of the Philips fan camp and got him hooked as a proud Miboy. Given my lowly requirements, I thought it over and went with a Japan-import CYBERDRIVE USB DAC. This CYBERDRIVE USB DAC thing is made by a Taiwanese company, ran a crowdfunding campaign on JD.com, and went for 240 or 300 RMB there, can’t remember which. Claims to be USB-stick-sized and decode DSD.

After picking up a ThinkPad X250 I paired it with a dock. The dock was an engineering sample. Cheap, but with its share of problems. Most of them I can live with — no triple-monitor output, for instance, which I don’t need anyway. The real killer is that when the machine isn’t plugged into power, external audio picks up a loud hum. People reported this on the official site and on Youtube. It turned out to be a hardware fault on Lenovo’s end, and only got fixed after Lenovo recalled the thing. Like I said, though, mine is a cheap engineering sample, so no recall for me. That doesn’t mean there’s no fix. Just get an external sound card…