Firestone Audio Libby Pure Class A Headphone Amplifier DAC

The new Firestone Audio Libby is a Class A Headphone Amplifier and DAC in one sleek new chassis that features an extremely powerfull output that can drive even the most difficult headphones with ease.

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 its 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.

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
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
Housing dimensions (D x W x H) : 208 x 220 x 55 mm (Housing only without parts 'sticking out' like switches, connector parts, etc.)
Weight : 2.1kg

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