● Total 4 x 4 channel 24-bit/192kHz Audio Interface
           (PCI Local Bus Spec. 2.2 compliant)
        ● PCI Slot compatibility designed to suit +3.3V and/or +5V            PCI slot
        ● Precision low noise Microphone preamplifier
           with +48V phantom and Low cut
        ● Built-in Selectable Direct Instrument Input
        ● Built-in high quality Dual Headphone amplifier
        ● High quality Audio-Converters and expert analog            technology
        ● ADC : 113dB dynamic range (up to 24-bit/192kHz)
        ● DAC : 115dB dynamic range
        ● Hardware mixer for direct monitoring.
        ● Uses Cross-Latch type 1/4" TRS Stereo jack for
           reliable analog I/O
        ● 2 Stereo unbalanced analog inputs
           (1/4" TRS Stereo, -10dBV)
        ● 2 Stereo unbalanced analog outputs
           (1/4 TRS Stereo, -10dBV)
        ● RCA connector for Coaxial I/O (Support up to 192kHz)
        ● Shutter type optical output jack for S/PDIF output
        ● Supports pass-through AC-3/DTS
        ● Word Clock I/O : Fs / 256*Fs, BNC Connector
        ● 16 channel MIDI I/O
        ● FREE Mixer
        ● Virtual Channel Function
        ● Support ASIO2, GSIF2, WDM, DirectSound
        ● Support for Windows® XP, 2000

        The QUARTET is equipped with ‘US-PSB class I’ based on OP-AMP discrete circuits instead of
        a general regulator type IC
        First of all, as it reduces noise of output, and power noise is decreased over 10dB
        Mass storage capacitors and protection circuits effectively deal with electronic shock and noise
        It can be monitored in detail by the powerful drivers and OP-AMP circuitry. It keeps a very stable power flow
        In addition, it has the function of slowly rising voltage, called ‘Slow slope ON’
        This protects monitor speakers and headphones from being damaged by that ‘pop-noise’ when you turn on your PC

IS Microphone Preamplifier - a low noise transistor buffer,
high quality
mic-preamp. (E.I.N: Equivalent input noise -127dBu)
Not only is the value of E.I.N 20dB lower but, its quality of
CMRR and frequency response is better than other
similar grade products
It delivers professional recording studio quality audio

PAD/GAIN jumper can be used with many types of microphones
(from the condenser microphones to low leveled dynamic microphones)
Like a professional MIC preamplifier,
QUARTET supports the Low-cut function and
+48V phantom power

Generally, there is a lot of high frequency digital noise in the inside of a Computer Especially if you have more PCI cards close to one another

Noise Guard Bracket is designed to protect QUARTET from electronic noise that the computer and
other PCI/video cards can generate

With the FREE mixer, it is possible to connect to
every part of the Hardware in/out, WDM, ASIO2, GSIF2 drivers to themselves
You can use them altogether to mix and
route them in two styles of user interface
According to set it up, It can be used as input monitor, sub mixer, connection driver to driver or any purpose you want

The QUARTET has 4X4 physical channels
In the other hand, QUARTET also supports virtual extended 8X8 channels, which can be made by easily mapping through the FREE mixer