Libby DAC & Headphone Amplifier

The new Firestone Audio Libby is a Class A Headphone Amplifier and DAC in one sleek new chassis. The DAC features inputs for USB, Coaxial and optical as well as AES/EBU for connection to professional grade components. Libby also features a single line level input which is sampled through the high-precision ADC.

Libby's DAC features a low-jitter recovered system clock for superior DA conversion. In addition, Libby allows you to select a re-sampling frequency from 44.1kHz to 192k.

With it's high quality digital volume control, 6.3mm headphone output and class A amplification section, Libby offers the headphone market a real viable alternative to traditional analogue offerings from other manufacturers and moves headphone amplifiers into the new millennium.

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Libby Specifications

  • Amplifier Structure: High current/swing output amplifier, four step bias control
  • Power Structure: High precision linear voltage regulator (Analogue system)
  • High efficiency/frequency voltage regulator (Digital system)
  • Power Mode: Standby and Power on mode, plus main power switch for shut down
  • Input Select: Line in/Coaxial/Optical/AES-EBU/USB
  • Headphone impedance: 16ohm to 600ohm
  • Circuit Protect: Output short/system over current protect

Libby Specs Cont...

  • Characteristic: Using OP275 and high current power transistor to build high quality headphone amplifier
  • Frequency Control: Adjustable from 44.1kHz to 192kHz
  • Bit Length Control: Adjustable 16-bit or 24-bit data length
  • Mute Control: Mute headphone without rotating the volume knob
  • USB Support Format: 16-bit, 32/44.1kHz/48kHz
  • SPDIF / AES-EBU Support Format: 24-bit, 96kHz (MAX)
  • Power Amp: TI - TAS5706
  • Processing Chip: TI – TAS5086
  • ADC Chip: TI – PCM1803A
  • USB Chip: TI – PCM2704
  • SRC Chip: TI – SRC4193
  • Receiver: TI - DIR9001

Libby Connectivity

  • USB interface (USB 1.1)
  • Digital Input: 1 x coaxial jack, 1 x optical jack, 1 x AES/EBU
  • Line Input: 1 x RCA
  • Line Output: 1 x 6.3mm Headphone jack (stereo)

Libby Requirements

  • Using in any equipment with Line-out or Pre-out function
  • Intel® Pentium® 2, Celeron® 800MHz or higher computer system
  • Microsoft® Windows 2000® (Service Pack 4) or Windows® XP (Service Pack 1)
  • Any Apple Macintosh
  • 128MB RAM
  • Available USB port