Reference Monitors
- Blow 5
- Blow5D
- Blow 5# [sharp]
- Blow 4
- Blow4D
- Blow4# [sharp]
FireWire Audio Interfaces
- DeuX
- Windy6
USB Audio Interfaces
- UAX2
- Amon
PCI Audio Interfaces
- Quartet
- M49 USB Midi Controller
- UFO# [sharp]

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Quartet Pro-Audio Interface
Products > PCI Audio Interfaces > Quartet

PCI Compatible, Multi-Function Sound Editing for Your PC Audio Studio

Available from
Infrasonic Dealers

The INFRASONIC QUARTET is a multi purpose pro audio interface card using stable PCI bus technology. QUARTET provides high quality, multi-function, sound editing for your home studio.

QUARTET has better performing analog I/Os than other cards in its class. It supports a 192 kHz ADC sample-rate with full 24-bit recording. The high-quality AD/DA converter has 115dB signal-to-noise (S/N) ratio. The high-end components in the analog circuit improve dynamic range by 10dB.

Other features include a MIC preamp, direct instrument input, MIDI I/O, Coaxial I/O, Word clock I/O and Dual Headphone amplifiers QUARTET is professional gear that will satisfy in features, performance and convenience.

  • Total 4 x 4 channel 24-bit/192kHz Audio Interface
  • V-Balanced™ Driver Technology (IO Changes to 2x2,2x4,4x2 between unbalanced and balanced)
  • 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
  • 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
  • FREE Mixer
  • Virtual Channel Function
  • Support ASIO2, WDM, DirectSound

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Quartet Outside Box

Quartet Box Inside

Quartet Front View


Quartet Top Side View

Quartet Front Top View

  Type   2 x Unbalanced 1/4" Stereo Input
  Level   -10dBu Nominal (@-18dBFS) , +10.4dBu max, deviation +/- 0.1dB
  Frequency Response   20Hz to 20kHz, +/- 0.05 dB
  THD + N   0.0012 dB % A-weighted (1kHz @ -3dBFS)
  Dynamic Range   110 dB A-weighted (1kHz @ -60dBFS)
  Impedance   10k ohm
  A/D Converter   Type 
  Dynamic Range 
  S/(N+D) Ratio 
  Interchannel Isolation
  24bit, 192KHz
  110/113dB (@ -60dBFS A-Weighted)
  -90/-100dB (@ -1dBFS, measurement method)


  Type   2 x Unbalanced 1/4" Stereo Output
  Level   -10dBu Nominal (@-18dBFS) , +10.2dBu max, deviation +/- 0.1dB
  ATT Range   0dB ~ -48dB (255 linear step size)
  Frequency Response   20Hz to 20kHz, +/- 0.02 dB
  THD + N   0.0012 % A-weighted (@ -3dBFS)
  Dynamic Range   113dB dB A-weighted
  Load Impedance   32 ~ 600 ohm (1/4" Stereo)
  D/A Converter   Type 
   Dynamic Range 
   S/(N+D) Ratio
  Interchannel Isolation
  24bit, 192KHz 8 times digital filter
  115dB (@ -60dBFS with A-Weighted)
  -97dB (@ -1dBFS, measurement method)
  Type   Balanced TRS (+48V Phantom Power support)
  Max Input Level   -2dBu max (PAD OFF), +17.0dBu max (PAD ON)
  Gain Range   +20dB / +40dB / +60dB (PAD OFF), 0dB min ~ +40dB max
  Equivalent Input Noise   -127 dBu (22kHz BW, +60dB Gain, 150 ohm)
  THD + N   0.002% A-weighted (1kHz @ gain +20dB)
  Frequency Response   10Hz ~ 50kHz @+50dB (40Hz~15kHz : +0.06, -0.58dB)
  Low Cut Freq : 75Hz @+3dB
  Impedance   1.5K Ohm
  Hi-Z Instrument INPUT
  Type   Unbalanced 1/4"
  Level   -16dBu Nominal (@-16dBFS) , +2.4dBu max
  Frequency Response   20Hz to 20kHz, +/- 0.24 dB
  THD + N   0.06% A-weighted (1kHz @ -3dBFS)
  Dynamic Range   TBD dB A-weighted (1kHz @ -60dBFS)
  Impedance   150K Ohm
  Type   5P-DIN Standard MIDI Connector
  Type   RCA (Coaxial) / Optical Jack
  Impedance   75ohm
  Format   IEC-60958 Professional / Consumer
  Sample rate   44.1kHz, 48.0kHz, 88.2kHz, 96.0kHz, 192kHz, 176.4kHz
  Intel Pentium 4 or equivalent and compatible CPU
  Motherboard with chipset supporting the Intel Pentium 4
  256MB of RAM
  One available PCI slot
  Microsoft Windows XP, 2000 operating system

INFRASONIC, WINDY6, BLOW5, BLOW5D, BLOW4, BLOW4D, INFRASONIC DeuX, INFRASONIC AMON, INFRASONIC Quartet, JamMate and SIMS Audio are trademarks of SIMS Corporation. All other trademarks remain the property of their respective owners.


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