EC Zero R2

Parameters and Specifications

Dimensions: 158 x 150 x 28 mm

Weight: Approximately 669g

Screen: 1.68-inch LCD display

Supported specifications: 768kHz/32bit, DSD512

Gain compensation: High, Low

DAC: Self-developed Kunlun 24-bit R2R DAC architecture

Digital Filters: OS/NOS

The ripping function only supports FAT32 formatted storage devices.

Bluetooth version: 5.3

Bluetooth encoding method

Bluetooth transmission supports: aptX Adaptive, aptX, SBC

Audio formats: Supports CDROM/CD-RW/CD-R formats, with CD-R format supporting FLAC/WAV/WMA/AAC/MP3 and SACD playback only with CD layer.

3.5mm headphone output

Output power:

Quality Control:

• Low gain: 57mW@32Q
  
• High gain: 158mW@32Q
  
• High gain: 330mW@32Q (DC power supply)
  

vacuum tubes

• Low gain: 47mW@32Q
  
• High gain: 158mW@32Q
  
• High gain: 268mW@32Q (DC power supply)
  

THD+N: 0.02%

Dynamic range: 116dB

Channel separation: 79dB

Signal-to-noise ratio: 115dB

Noise: 111dB (low gain)

USB DAC frequency response: 20Hz-40kHz (-0.5dB)

CD PLAY frequency response: 20Hz-20kHz (-0.5dB)

4.4mm headphone output

Output power:

transistor:

• Low gain: 195mW@320
  
• High gain: 55lmW@32Q
  
• High gain: 1220mW@32Q (DC power supply)
  

Vacuum tubes:

• Low gain: 195mW@32Q
  
• High gain: 55lmW@32Q
  
• High gain: 1087mW@32Q (DC power supply)
  
• THD+N: 0.02%
• Dynamic range: 117dB
• Channel separation: 103dB
• Signal-to-noise ratio: 117dB
  
• Noise: 108dB (low gain)
  
• USB DAC frequency response : 20Hz-40kHz (-0.5dB)
• CD PLAY frequency response: 20Hz-20kHz (-0.5dB)

3.5mm line output

Output voltage:

Transistor: 2.12Vrms

Vacuum tube: 1.97Vrms

Frequency response: 20Hz-40kHz (-0.5dB)

THD+N: 0.02%

Signal-to-noise ratio: 116dB

4.4mm line output

Output voltage:

Transistor: 4.2Vrms

Vacuum tube: 3.94Vrms

Frequency response: 20Hz-40kHz (-0.5dB)

THD+N: 0.02%

Signal-to-noise ratio: 118dB