FiiO WARMER R2R Desktop DAC and Tube Buffer with Fully Differential 24-Bit Resistor Ladder

To further enhance the sonic character, the WARMER R2R features four JJ Electronic E88CC vacuum tubes imported from Slovakia, operating as a dedicated buffer stage to provide a classic, warm, and rich harmonic profile. The visual experience matches the audio performance with two large, amber-backlit mechanical VU meters that dance in harmony with your music. Built with a massive 46W toroidal linear power supply for pristine signal purity, this device offers versatile connectivity through USB, Optical, and Coaxial inputs with both RCA and XLR line-level outputs.

Fully Differential 24-Bit R2R Architecture: Features a complex ladder of 192 resistors with 0.1% accuracy to ensure a transparent yet smooth and natural digital-to-analog conversion.

Quad JJ Electronic E88CC Tube Buffer: Four high-quality vacuum tubes provide a rich, organic warmth and a spacious soundstage that softens the edges of digital recordings.

Dual Mechanical VU Meters: Retro-inspired, amber-lit analog meters provide a captivating visual representation of your music's dynamic energy and signal levels.

OS and NOS Dual Modes: Choose between Non-Oversampling (NOS) for pristine, original waveform reproduction or Oversampling (OS) for enhanced detail and technical precision.

46W Toroidal Linear Power Supply: A high-capacity, low-noise transformer provides a rock-solid and clean foundation for the delicate R2R and tube circuitry.

High-Resolution Decoding: Supports PCM up to 384kHz/32-bit and native DSD256 via USB, ensuring compatibility with the highest quality lossless audio formats.

Premium Build Quality: Housed in a robust aluminum alloy chassis with integrated heat dissipation grilles, blending minimalist modern design with vintage audio charm.

Professional Line Outputs: Equipped with both balanced XLR and single-ended RCA outputs, allowing for high-performance connections to integrated amplifiers or active speakers.

Specifications:

Architecture: Proprietary Fully Differential 24-Bit R2R Resistor Array

Tube Configuration: 4x JJ Electronic E88CC Vacuum Tubes

Digital Inputs: USB Type-C, Coaxial (RCA), Optical (Toslink)

Analog Outputs: Balanced XLR (3-pin), Single-ended RCA

Maximum Sampling Rate (USB): PCM 384kHz/32-bit, DSD256 (Native)

Maximum Sampling Rate (Coaxial): PCM 192kHz/24bit

Maximum Sampling Rate (Optical): PCM 96kHz/24bit

Signal to Noise Ratio (SNR): Greater than or equal to 114dB (A-weighted)

Total Harmonic Distortion (THD+N): Less than or equal to 0.053% (1kHz/-7dB)

Frequency Response: 20Hz - 45kHz

Power Supply: 46W Internal Toroidal Linear PSU

Display: Dual Analog VU Meters with Amber Backlight

Dimensions: 223.5 x 213 x 66.8 mm (including feet)

Weight: Approximately 2.86 kg (6.3 lbs)