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Fubar III MkII USB DAC Headphone Amp

The all new Firestone Audio Fubar III MkII has the functions of a USB Digital to Analogue Converter and Headphone amplifier in a single convenient product. The ideal desktop audio headphone amplifier for the computer audiophile.

A simple USB connection to your computer and without installing any drivers (with Linux, Mac OS or PC Windows system) you will be enjoying your music collection like never before.

With a high/low gain control, the Fubar III MkII is capable of driving even the most difficult headphones including the Senhheiser HD 600 and HD 650.

With a pair of RCA outputs on the back, the Fubar III can feed your audio into an amplifier or powered speakers. The analogue input allows you to connect an analogue device such as an iPod for output to the headphone amplifier.

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Fubar III Specifications

  • Amplifier Structure : Coupling capacitor less, Push-Pull with Class-B Structure
  • Power Structure : Virtual-Ground power supply
  • Line Output : Signal same with phone output
  • Gain Control : Low (attenuation 20dB) / High (normal)
  • Volume Control : Series / shunt mode selectable

Fubar III Specs Cont.

  • Headphone Impedance : 32 ohm to 600 ohm
  • Support Format : 16-bit, 32kHz / 44.1kHz / 48kHz
  • Circuit Protect : Over current protect
  • USB Chip : TI ¡V PCM2702
  • LPF OPAmp : NS ¡V LM4562
  • Main OPAmp : TI ¡V OPA2604
  • Servo OPAmp : TI ¡V TL072

Fubar III Audio

(1kHz sine wave, 2Vrms output, 16-bit / 48kHz)

  • Frequency response 20Hz to 20kHz: 40Hz +0.01dB, 15kHz -0.12dB
  • Noise level (1kHz, A-Weighted) : -96.1dB
  • Dynamic range (1kHz, A-Weighted) : 96.1dB
  • THD% : 0.0018%
  • Stereo crosstalk : -90.0dB

 

Fubar III Requirements

  • USB interface (USB V1.1)
  • Line Output : 1 of RCA jack
  • 1 of 6.4mm phone jack

  • Intel® Pentium® 2, Celeron® 800MHz or higher computer system
  • Microsoft® Windows 2000® (Service Pack 4) or Windows® XP (Service Pack 1)
  • 128MB RAM
  • Available USB port