Cambridge Audio Dacmagic Black

I have a Cambridge Audio DAC Magic 100-Black in mint condition. Purchased new from Crutchfield about 4 months ago and used with my Mac. Recently purchased a 15' USB cable and connected the Mac directly to my main system through my Cambridge CXN. The DacMagic sounds great, is in excellent condition was was lightly used.

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Low-ballers will be ignored!

As per Cambridge:

atest-generation Wolfson Microelectronics 8742 24-bit digital-to-analog converter
asynchronous USB technology for reduced timing jitter and better sound with computer audio sources
incoming sampling rate indicator helps verify source quality
full-metal case design with thick brushed aluminum front panel
ground lift switch to eliminate potential ground hum
three digital audio inputs: one optical (Toslink) and 2 RCA coaxial (S/PDIF)
USB (Type B) input for connection to a computer
supported sample rates:

USB: 44.1kHz, 48kHz, and 96kHz (24-bit/192kHz supported with downloaded USB driver and WASAPI, ASIO, or kernel streaming modes)
optical: 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, and 192kHz
coaxial: 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, and 192kHz

built-in driver for USB 1.0 connection (up to 24-bit/96kHz)
dedicated Cambridge Audio USB 2.0 driver required for 24-bit/192kHz playback on a Windows® PC (free USB driver download available from Cambridge Audio website)
Mac OSX 10.5 or later supports 24-bit/192kHz USB output natively, so no dedicated driver is required
frequency response: 20Hz to 20kHz (±0.1 dB)
THD: less than 0.0025%
signal-to-noise ratio: 113 dB
external power supply included
4-1/4"W x 1-13/16"H x 6-1/16"D