Fubar IV Plus

192 kHz Upsampling DAC / Headphone Amp with USB and S/PDIF inputs.

Experience what sound is suppoed to be like with the Fubar 4 Plus.

The Fubar 4 Plus combines a 24 Bit DAC and Hi-End Headphone Amplifier into one spectacular unit. The 192 kHz upsampling feature lets you experience the most life-like and natural sound you'll hear from your digital sources.

Multiple Inputs - USB and a high end 24 Bit - 96 kHz DAC with both Digital Coax and Toslink Optical inputs. Use your headphones from the 1/4" (6.4mm) jack or deliver your music directly to your stereo from the RCA outputs.

Premium features include:

• USB input - Play music directly from your computer via USB. Requires no addition software or drivers
• Headphone Output - connect your favorite headphones to the 1/4" (6.4mm) headphone jack.
  
• S/PDIF inputs - The Fubar 4 has inputs for both Digital Coax and Optical. A hi-end 24 Bit 96kHz DAC lets you listen to to your high definition downloads in the full resolution. You can also connect your CD and DVD player or any device with a digital output.
• 192 kHz Upsampling - lets you enjoy a more life-like, natural presentation.
• RCA Outputs - Using the Gold Plated RCA outputs you can connect the Fubar 4 Plus to your home stereo for playback over speakers.
• Volume Control: Machined from a solid aluminum billet, controls the headphone output.
• Gain Switch - The External gain switch lets you optimize the Fubar 4 Plus output for your headphones.
  Compatible with 32 - 600 Ohm headphones.
• Changeable OpAmps: The OPA2604 OpAmp in the headphone amplifier section is changable allowing you to try the various OpAmps available including the OPA2627 SuperChip
• Choice of Colors: Available in your choice of Black and Silver face plates.

Detailed Specifications:

• Amplifier Structure: Coupling Capacitor Less / Push-Pull
  
• Line Level Output: RCA output 2 Vrms
  
• Gain Control: High setting (normal) / Low setting provides 20dB attenuation
  
• Volume Control: Series / Shunt - user selectable (default is Series)
  
• Headphone Impedance: 32 Ohm to 600 Ohm
  
• Circuit Protection: Output Short / Over Current Protection
  
• USB Support Format: 16 Bit  - 32 / 44.1 / 48 kHz (compatible with Windows, Mac and Linux)
  
• S/PDIF Support Format: 24 Bit / 96 kHz
  
• Upsampling: up to 192 kHz
  
• Input select: Auto Select - USB highest priority
  
• USB Chip: CMedia - CM108
  
• Reciever: Texas Instruments - DIR9001
  
• ASRC Chip: Texas Instruments - SRC4192
  
• DAC Chip: Cirrus Logic - CS4344
  
• LPF OpAmp: National Semiconductor LM4562
  
• Main OpAmp: Texas Instruments OPA2604
  
• Servo OpAmp: Texas Instruments TL072

 

Audio Performance

• S/PDIF (Digital Coax and Toslink Optical input) - RCA outputs - (1 kHz Sinewave) 2 Vrms
  Noise Level: (1 kHz A-weighted) -111.9 dB
  Dynamic Range: (1 kHz A-weighted) -111.6 dB
  THD%: 0.0018%
  Stereo Crosstalk: -111.0 dB

  S/PDIF (Digital Coax and Toslink Optical input) - Headphone output (1 kHz Sinewave 2 Vrms)
  Noise Level: (1 kHz A-weighted) -99.7 dB
  Dynamic Range: (1 kHz A-weighted) -99.6 dB
  THD%: 0.0020%
  Stereo Crosstalk: -90.0 dB

  USB Input - RCA outputs (16 Bit / 48 kHz)
  Noise Level: (1 kHz A-weighted) -96.2 dB
  Dynamic Range: (1 kHz A-weighted) -96.2 dB
  THD%: 0.0017%
  Stereo Crosstalk: -94.1 dB

  USB Input - Headphone output (16 Bit / 48 kHz)
  Noise Level: (1 kHz A-weighted) -92.1 dB
  Dynamic Range: (1 kHz A-weighted) -91.6 dB
  THD%: 0.0020%
  Stereo Crosstalk: -90.0 dB

  Connectivity

  • USB input (1)
    
  • S/PDIF Input
    
    • Digital Coax
    • Toslink Optical
  • Line Outputs
    
    • RCA Jacks (1 set)
    • Headphone Jack 1/4" (6.4mm)
  
  
  The Fubar 4 Plus has inputs for USB, Digital Coax and Toslink Optical. High quality playback is possible due to 192 kHz upsampling. Headphones from the 1/4" headphone jack or playback on your stereo using the RCA outputs.