charlesaudio.blog

Design Goals:

• ultra-low noise
• high performance user interface with remote control
• music visualisation, VU meters, spectrum displays, all configurable
• DIY capable – 4 layer PCB build, front panel machining
• build cost <£500

Specification

• 6 input: 6dB & 18dB selectable per input: RCA, XLR
• 3 output: fixed, variable, sub-woofer x2: RCA & XLR
• S/N >120dB, Channel separation >120dB, THD+N < 0.0001% (-120dB)
• Ethernet and USB
• Internal MC and MM Phono stage
• Internal DAC/ADC plus DAC over USB
• Roon, UPNP, Spotify & Airplay 2 capable
• Low-noise resistor ladder, relay controller volume control: 64dB in 0.5dB steps
• ultra low noise power supplys
• Short analogue signal path