master  balanced  DAC & tube  output  stage

Acuhorn R2R XT

Acuhorn R2R XT

Balanced DAC & DSD Converter with Class-A Big DHT Tube Stage

The Acuhorn R2R XT four original triode for balanced gain in class A. Why is the best sound now. The music is revealed from an unknown space. The best solution directly into the grid of tube from discrete resistors of ladder R2R Spartan 6. Playback main digital formats. Supports audio devices via USB audio or SPDIF. Balanced independent modern Vicor module power supply

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 600 ohm.

Digital input USB Type B audio adapter Amanero combo384 compatible with Mac OSX®, Linux and Microsoft Windows®. Digital input optical Toslink. Analog outputs XLR balanced and RCA.

Pure class-A single ended tube stage. Type 300B, PX25, PX4, 45, 2A3 power triode. Caddock High Performance Film Resistors. 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 select 90-132 or 180-264Vac
maximum input power 50W
discrete R-2R sign magnitude DAC type
4 pin base tube socket U4A
directly heated triode type 5 Volt, 4 Volt or 2.5Volt
3 signal input: USB audio and SPDIF coax and Toslink
2 audio output XLR balanced and RCA
internal cable OCC copper
terminal rhodium
weight 2,2kg
dimensions W 320 x D 320 x H 28mm

Acuhorn R2R XT manual
Direct Stream Digital DSD article

  balanced  independent  modern  power supply

  XLR Tube  DAC


Get in touch

Wojciech Unterschuetz
Gdansk Poland

Phone +48 737476346

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