iFi iDAC

Small pre-amp with line out and headphone out.
24 bit / 192 kHz asynchronous USB input
ESS Hyperstream Chipset

Specifications:
Signal to Noise Ratio:	>111dB(A)
Dynamic Range(-60dBFs):	>111dB(A)
Crosstalk:	<-102db td="td" z="z">
Total Harmonic Distortion(THD):	<0 .005=".005" td="td">
Jitter:	Below measurement limit
Frequency Response:	3Kz to 33KHz + 0.1dB/0.3dB
Headphone section:
Output Power:	>150mW(15Ω)
Signal to Noise Ratio:	>97dB(A)
Total Harmonic Distortion:	<0 .003=".003" mv="mv" td="td">
Noise:	<-86dbu td="td">
Output Impedance:(Zout):	<10 td="td">
Power Consumption:	< 2.5W
Dimensions:	158(l)x68(w)x28(h)mm
Weight:	193g(0.43lbs)

Website: iFi
Price: US$ 299

Benchmark DAC2 HGC

DAC with volume control, line and headphone out.
DSD over USB ( DoP 1.0)
Supports USB(async) 1 & 2. Driver for Win.
2x4 32-bit DACs
Output: RCA/XLR

Website: Benchmark
Price: US$ 1995

Burson Conductor

Headphone amplifier/ Pre amplifier / DAC

Inputs

1 x USB Connection
1 x Coaxial RCA (Support up to 24bit @ 192Khz)
1 x Toslink / SPDIF (Support up to 24bit @ 192Khz)
2 x RCA line level input


Outputs
1 x headphone jacks 6.35mm
1 x RCA Pre Amp output
1 x RCA DAC direct line out


DAC Specification
ESS SABRE32
Channel Separation: 140 dB @ 1KHz, 130 dB @ 20KHz
THD+N: 0.0005% @ 1KHz, 0dBFS
COAX & Toslink / SPDIF : 32 bits / 44.1K, 48K, 88.2K, 96K, 176.4K, 192KHz


USB Specification
Tenor TE8802
OS Requirement: Windows XP, Windows Vista, Windows 7, Mac OS X
USB : 24 bits / 44.1K, 48K, 88.2K, 96K, 176.4K, 192KHz
Support up to 24bit @ 192Khz with 10ppm low jitter clock
Asynchronous Transfer Mode


Website: Burson
Price: $1.850