Rockna Audio Wavedream Reference Signature R2R DAC

Rockna Audio Wavedream Reference Signature R2R DAC

The Wavedream Reference Signature is Rockna Audio's top-of-the-line DAC, utilizing over a decade of cutting-edge development to create a reference-grade digital-to-analog converter. The model stands out from traditional solutions with its custom architecture, which does not rely on off-the-shelf chips or OEM modules. This refined device delivers exceptional sound quality and technical elegance.

Wavedream Reference Signature offers:

• Extreme performance: low distortion, wide dynamics and high resolution;
• Customized hardware where the FPGA architecture can be modified via firmware;
• A carefully designed analog output stage, clock and power supply for the audiophile;
• Elegant design and versatile control.
• It is aimed at those who demand absolute audio realism and cutting-edge technology from their hi-fi equipment – ​​without compromise.
• Updateability – e.g. new feature, Qobuz Connect

Technology and structure

Proprietary architecture: AMD ZynQ chipset and separate R2R-DAC modules (RD-0 MK2), each with its own FPGA control. Frequency range up to 6 MHz

Clock system: ASRC-free femtovox clock management minimizes jitter and preserves analog rhythm.

Analog Output Stage: Fully discrete Class-A amplifier stage using JFET and bipolar elements, providing high speed, low output impedance, and quiet operation.

Digital filters: 16x up-sampling via FPGA, Parks-McClellan algorithm (linear, minimum and hybrid phases)

Wavedream Reference vs. Signature – What are the differences?

1. Digital R2R module

• Reference: Uses RD-1 MK2 modules (26-bit).
• Signature: Updated RD-0 MK2 modules (27-bit), increasing accuracy and dynamics.

2. FPGA architecture

• Reference: 27-bit FPGA driving multi-bit combinations.
• Signature: A more advanced 28-bit FPGA that controls individual switches/bitpaths more precisely.

3. Clock management

• Reference: Standard version with Femtovox 2 clock management.
• Signature: A more advanced version of Femtovox 2-LPN for even more stable and accurate clock control.

4. Power supplies and analog output

• Signature utilizes ultra-low noise, finely tuned power supplies and a fully discrete analog output amplifier stage.

5. THD & Dynamic Range (-3 dB) DNR

• Reference ≈ –100 dB 132 dB
  Signature ≈ –102 dB 139 dB

6. Maximum output power

• Reference: 2.3 V RMS (RCA) / 4.6 V RMS (XLR)
• Signature: 3.5V RMS (RCA) / 7V RMS (XLR) – more signal strength and dynamic range

7. Sound quality & listening experience

According to user analysis, Signature offers:

• Wider sound field
• Deeper silence and undisturbed ground
• Highly accurate details and improved stereo understanding

Specifications

• THD + Noise (%) –102 dB (–6 dB)
• Signal-to-noise ratio (DNR) 132 dB
• Max. output voltage 10 Vpp (RCA), 20 Vpp (XLR)
• Connections – inputs LAN, USB, I2S, SPDIF, AES/EBU, Toslink
• Connections – RCA and XLR outputs
• Housing Aluminum, matte black or silver
• Dimensions 450 × 390 × 105 mm
• Weight 10 kg

Operating characteristics

• Built-in network rendering and control interfaces Roon Bridge, UPnP, OpenHome, AirPlay, Spotify Connect, etc.
• Control via touchscreen, IR remote control or iOS/Android apps
• The device is fully upgradable with firmware updates – the digital architecture adapts over time