Anyone searching for an affordable USB headphone DAC may be interested in a new piece of hardware created by Richard Willmott based in the United Kingdom. Richard has created an “affordable Audiophile USB Headphone DAC for everyone” and launched the device via Kickstarter this week with the aim of raising enough funds to take the design into production.
Specifications of the headphone DAC include :
• THD+N: 0.025% RL = 32 Ω
• THD+N: 0.006% RL > 10 kΩ
• SNR = 98 dB
• Dynamic Range: 98 dB
• Sampling Rate: 16Bit 32, 44.1, 48 kHz
• Oversampling Digital Filter
• Passband Ripple = ±0.04 dB
• Stop-Band Attenuation = –50 dB
• Headphone Output Power: 12mW
• Power Consumption: 35 – 45mA
Richard explains more about the inspiration behind the USB headphone DAC and its design.
I wanted to design a USB Headphone DAC that was as small as I could make it, I decided that I should make it the size of a USB Drive. After lots of research I decided to make a design based on the PCM2706. The PCM2706 was chosen as it has built in USB 2.0 and is perfect for Headphones. Now all I had to do was design a circuit around this IC and that would be USB sized, I designed my PCB board in Cadsoft Eagle.
For more information jump over to the official Kickstarter campaign by following the link below where the headphone DAC is available from £20 with shipping expected to take place during February 2018.