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Acuhorn R2R

Acuhorn R2R

Stereo Streamer and DAC Loaded FPGA Spartan 6 R2R Ladder

Acuhorn R2R, a tiny modern design that twins with the RATE amplifier. Just to get closer to the recovery of music playing as it was at the beginning. Today there is no better way for digital to analogue converter than to load to the programmable logic with as much computing power. To split the signal into millions of particles and unload onto a discrete ladder of analog resistors. It's like a stylus diamond traveling through a vinyl groove.

R2R ladder 28 bit resolution 384Khz dac by famous Soekris. Loaded FPGA Spartan 6 technology oversampling up to 3.072Mhz. Frequency range +0.1dB -1.0dB 20hz - 20Khz. Total harmonic distortion + noise <0.015%. Signal to noise ratio 127dB A weighted. Automatic input selection I2S or SPDIF. R-2R direct single ended output: 1.4V RMS Zout 625ohm for high impedance input transformer or input tube amplifier. Buffered single ended output: 2V RMS Zout 10ohm for any input amplifier or headphones >300ohm by adapter cable.

Server runs on Raspberry Pi of single board computers. Low Latency and Real-Time Audio kernels. DXD PCM 384Khz and support DoP for DSD128 to 192KHz output via I2S interface. Compatible with all formats music: MP3, FLAC, WAV, AAC, ALAC, DSD. UPNP\DLNA, Airplay, TIDAL, Qobuz, Spotify, Google Play, Squeezelite and Web-Radios, etc. Controlled wifi from remote running on smartphones, tablets, notebooks. For control playback and settings use any audiophile music player for RPi.

Power supply is the best Vicorpower modules. DC-DC converters provide high power density and low noise High frequency Mhz switching. Advanced power processing in a small size. Autoranging 90-264Vac network voltage, for worldwide use.

technical specifications
input voltage mains autoranging 90-264Vac
maximum input power 20W
discrete R-2R sign magnitude DAC type
digital volume control
3 signal input I2S by RPi, SPDIF Coax and Toslink
2 audio output R-2R direct and buffered
internal cable OCC copper
terminal rhodium
weight 1,5kg
dimensions W 320 x D 200 x H 28mm

Acuhorn R2R + RATE review highfidelity
Acuhorn R2R manual

  loaded FPGA Spartan 6  technology  discrete R2R  ladder

 High Tech  DAC


Get in touch

Wojciech Unterschuetz
Gdansk Poland

Phone +48 737476346

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