Burson Audio Conductor Virtuoso Headphone Amp/Preamp/DAC

Up for sale is a Burson Audio Conductor Virtuoso Headphone Amp, DAC and Preamp with ESS9018 SABRE32 DAC. This is a highly regarded unit and has plenty of power for Sennheiser's other high impedance headphones that require a beefy amp. The SABRE DAC is executed wonderfully bringing a transparent and refined sound.
This unit is in fantastic operating and cosmetic shape (save for one ding on the aluminum housing - pictured). It was once part of my desktop system in a non-smoking home. It will ship in a Burson box with power cord and remote, but it is not the original box.

Measurement

Input impedance: 36.5 KOhms
Frequency response: ± 1 dB 0 – 50Khz
Signal to noise ratio: >94dB
THD: <0.03% at 30ohm with 1W ouput
Channel separation: >73dB
Output power: 4W at 16 Ohms
Output impedance (Headphone Amp): 3 Ohm
Output impedance (Line Level): 30 Ohm
Power dissipation: 35W internal, regulated power supply

DAC Specification

Channel Separation: 140 dB @ 1KHz, 130 dB @ 20KHz
THD+N: 0.0005% @ 1KHz, 0dBFS
COAX & Toslink / SPDIF : 24 bits / 44.1K, 48K, 88.2K, 96K, 176.4K, 192KHz

USB Specification

OS Requirement: Windows XP, Windows Vista, Windows 7, Windows 8, 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

Inputs

1 x USB Connection (CM6631a USB Module)
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 out
1 x RCA DAC out