Key Workflow: PCI Express multichannel sound card with on-board processing for on-air automation and permanent playback.

PCX422e is the reference multichannel sound card with on-board processing designed for operating in continuous 24/7/365 use-environments, such as radio automation. Its on-board processing guarantees all audio channels are always processed whatever the PC CPU load is, which gives absolute reliability and responsiveness to the audio system.

At a glance

PCX422e is a full featured multichannel model of the PCX series of sound cards. Thanks to its digital and analog inputs and outputs with broadcast grade specifications, its on-board processing and unrivaled reliability, PCX422e is the reference multichannel sound card used in the radio automation systems designed by Digigram Development Partners. A proprietary Software Development Kit (SDK) allows control of the card’s on-board functionalities. Available as part of the systems delivered by Digigram Development Partners, PCX422e can also be used as a linear PCM sound card with software applications based on standard driver interfaces.

  • Multichannel sound card designed for broadcast radio
  • On-board processing available through Proprietary Digigram SDK: MPEG audio, mixing of PCM and MPEG, cross-fades, real time time-scaling
  • Proprietary Software Development Kit for controlling the on-board features
  • Interoperable with most of the third party software applications for audio production under Windows, through DirectSound, Wasapi, and ASIO
  • PCX cards are sold to Development partners: they design and sell the applications that include these cards

Key features

  • Multichannel PCI Express sound card with on-board processing: MPEG audio, mixing of PCM and MPEG, cross-fades, real time time-scaling, 3-band parametric EQ, Maximizer
  • Four balanced analog outputs, and two balanced analog input +24 dBu max level
  • Two stereo AES/EBU outputs, and one stereo AES/EBU input with hardware sample rate converter
  • Adjustable input and output analog and digital gains
  • Synchronization inputs: AES11, Word Clock, black burst video reference
  • Support for Windows 32-bit and 64-bit (Digigram proprietary SDK, WDM kernel streaming, DirectSound, Wasapi, ASIO)
  • Breakout cables with XLR connectors



low failure rate and high reliability

Ongoing product support

from Digigram and its Development Partners

Increased system efficiency

guarantee of low latency operations and of processing power availability


& future-proofed


  • Bus/Format: PCI Express (PCIeÒ) x1 (x2, x4, x8, x16, x32 compatible)
  • Size: 168 mm ´ 111 mm x 20 mm
  • Power requirements (+3.3V/+5V / +12V / –12V): 2.5 A / 0 A / 0.1 A / 0
  • Operating: temp / humidity (non-condensing): 0°C/+50°C • 5%/90%
  • Storage: temp / humidity (non-condensing): -5°C/+70°C • 0%/95%
  • Analog line inputs (mono): 4 balanced on PCX44x
  • Maximum input level/ impedance: +24 dBu/ >10 kOhms
  • AES/EBU** inputs:  2 with switchable hw sample rate converters,ratio from 1:8 to 7,5:1, up to 192 kHz
  • Programmable input gain:
    – analog: from –94.5dB à +15.5 dBÄ
    – digital: from –110 dB à +18 dB
  • Other inputs: AES/EBU Sync (up to 192 kHz), Word clock (up to 96 kHz), LTC, Video
  • AES11 synchronization: Yes
  • Analog line outputs (mono): 4 servo-balanced
  • Maximum output level / impedance: +24 dBu / <100 Ohms
  • Digital outputs: 2 stereo AES/EBU, up to 192 kHz
  • Programmable output gain:
    – analog: from –86 dB to +24 dB
    – digital: from –110 dB to +18 dB
  • Other output: Word clock (up to 96 kHz)
  • Internal connectors: Inter-board Sync
  • External connector: 68-pin SCSI MDR
  • Digigram accessories available: Breakout cable
Audio specifications
  • Sampling frequencies available: Programmable from 32 to 192 kHz
  • A/D and D/A converter resolution: 24 bits
  • Supported audio formats: MPEG, PCM (8, 16, 24 bits), Float IEEE754
Audio audio performance
  • Frequency response (record + play): 20 Hz–20 kHz: ±0.2 dB
  • Channel phase difference: 20/20kHz: <0.2°/2°
  • Dynamic range (A-weighted):
    – analog In: >104 dBA
    – analog Out: >104 dBA
  • THD + noise 1 kHz at –1 dBfs:
    – analog In: <–97 dB
    – analog Out: <–94 dB
  • THD + N 1 kHz AES/EBU In w/ SRC: <-130 dB
  • Crosstalk (Analog in or out):
    – 1 kHz at 24 dBu: <–100 dB
    – 15 kHz at 24 dBu: <–85 dB
Development environments
  • Digigram management under Windows: np SDK
  • Other management under Windows:  Wave (PCM & MPEG Laye II), WASAPI, ASIO, and DirectSound (all PCM)
  • OS supported: from Windows 7 and Windows server 2003 (32-bit and 64-bit versions)
  • Main on-board processing features (with np SDK): PCM play & rec, MPEG Layers I & II play & rec, Layer III play, Float IEEE754,direct monitoring, real-time mixing, level adjustment, panning, cross-fade, punch-in/punch-out, scrubbing, time-stretching, pitch-shifting, 3-band parametric equalizer, maximizer, format and frequency conversions