audiophile DSD  converter  DAC & tube  output stage

Acuhorn R2R TS

Acuhorn R2R TS

Audiophile DAC & DSD Converter with Class-A Super Tube Stage

The Acuhorn R2R TS is a compact device with a beauty image of music thanks to the tube output stage. Applied subminiature power triode by Sylvania with the same parameters as big 300B vacuum tubes. Powered by digital to analog converter loaded FPGA Spartan 6 discrete R2R ladder. Compatible with all types of music file formats. Working together with audio device by USB audio or SPDIF. And state of the art power supply by Vicor modules.

R2R ladder 28 bit resolution 384Khz dac by Soekris. Loaded FPGA Spartan 6 technology oversampling up to 3.072Mhz. Frequency range +0.1dB -1.0dB 20hz - 20Khz. Total harmonic distortion + noise <0.008%. Clock jitter RMS 0.8 pS typical. Resistors precision 28 bit 0.02% resistors. Signal to noise ratio 20 Khz bandwith 129 dB unweighted. Input SPDIF up to 24 bit 192 Khz. Input I2S PCM up to 24 bit 384 Khz. Input I2S DSD up to DoP128 and DSD256.

Autoselect between the USB audio device and SPDIF inputs with priority SPDIF. Manual switch of input selection SPDIF coax or optic. RCA single ended tube output: 2.8V RMS Zout 1200 ohm.

Digital input USB Type B audio adapter Amanero combo384 compatible with Mac OSX®, Linux and Microsoft Windows®. Digital input optical Toslink. One analog outputs with volume control.

Stepped attenuators are the most preferred solution in high end audio. High quality precision 0.1% thin film Nichrome chip resistors.

Pure class-A single ended tube stage. The premium subminiature type 5987 power triode by Sylvania. Thick film resistors SMD 3521 1% per channel. Separate dual mono power supply.

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 30W
discrete R-2R sign magnitude DAC type
one per channel type 5987 power triode by Sylvania
stepped attenuator volume control
3 signal input: USB audio and SPDIF coax and Toslink
1 audio output
internal cable OCC copper
terminal rhodium
weight 1,6kg
dimensions W 320 x D 200 x H 28mm

Acuhorn R2R TS manual
Direct Stream Digital DSD article

  triode  beauty image  with discrete R2R

  Tube  DAC


Get in touch

Wojciech Unterschuetz
Gdansk Poland

Phone +48 737476346

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