"I wasn't expecting much from the Hifiman Express HM-101; it's just a $39 outboard USB digital-to-analog converter and headphone amplifier. Well, this tiny USB-powered (it doesn't need batteries or an AC power supply) device definitely pumped up the sound of my Audio Technica ATH-M50 headphones! They sounded significantly better with the Express than they did plugged directly into my Mac Mini's headphone jack."
- Steve Guttenberg, CNET.com, October 30, 2011
"Basically, this tiny little USB sound card just does a better job of turning the ones and zeros on your hard drive into an analog signal to send to your headphones or speakers. The HM-101 is tiny and very simple: it's just a smidgen bigger than an iPod Nano, and has just a USB input and two outputs - one for headphones and one for speakers."
- Mario Aguilar, Gizmodo.com, October 31, 2011
"I think the beauty of the HM-101 is in the simplicity of the set up, the volume control-less operation (done on the computer), and the superb soundstage performance… Not only does it pass the 'good quality' mark, but I happen to really enjoy its musical presentation."
- Mike, Headfonia, October 20, 2010
"For that price, it met and exceeded our expectations, and offered a strong value proposition against other DACs… If you're in need of a simple, portable, no-frills audio solution to greatly improve the quality of your digital music, look no further."
- Greg May, Audio Week, November 3, 2011