This Sound card has been used once. As good as new. Still in its original packaging. Excellent for creating music. Good converters.

Features

• 2 analog input channels, 2 analog output channels
• 24-bit/192kHz AD converter with 114dB(a) dynamic range
• 24-bit/192kHz DA converter with 112dB(a) dynamic range
• swappable socket (Unbalanced RCA with -10dBv or Balanced TRS with +4dBu )
• coaxial S/PDIF digital input
• synchronisation to digital S/PDIF input signals
• optical S/PDIF digital output with automatic shutter (max.96kHz)
• coaxial S/PDIF digital output (max 192kHz)
• support for DirectWIRE 3.0
• 4 inputs and 4 outputs can be used with 24bit/192kHz simultaneously (incl. MIDI I/O) - full duplex
• PCI card is compatible with 3.3V and 5V PCI slots
• independent monitoring control for analog and digital input signals and playback
• EWDM driver: MME, DirectSound, ASIO 2.0 and GSIF 2.0 support
• Windows 98SE/ME/XP/2000/Vista compatible
• compatible with Mac OS X 10.1 and newer
• Linux compatible (ALSA)

You can switch between balanced and unbalanced ins and outs.