»DIGI32 Pro

16/20/24 Bit PCI-Bus Digital In/Out Card with 20 bit analog output

Overview Technical Specs / Features Settings Win95 Settings WinNT Transfer Modes Unique Technologies

The world's first card to be


DIGI32 PRO is the ultimate solution for transfer and playback of soundfiles. The card works exactly like a DIGI32 with all its advantages, giving you a perfect 2-channel digital in/out solution. Additional it supports the sample frequencies 64 kHz, 88,2 kHz and 96 kHz. But DIGI32 PRO is not only a good investment in tomorrow's technology. Many programs already support sample frequencies up to 96 kHz. For example HpW's Pro Generatorallows you to handle more than 40 kHz analog, and programs like WaveLab and Samplitude also support sample rates above 48 kHz.

The usage of such high sample rates requires a special DA-converter. DIGI32 PRO uses a hi-grade 20 bit DAC from AKM, that is able to convert up to 96 kHz (giving you an analog bandwidth of more than 40 kHz.) And there is more: Simply activate the Emphasis bit on the digital output by selecting it in the settings box, and listen to the result! DIGI32 PRO immediately corrects the Channel Status of the digital output and the frequency response at the analog output.

Although built in a PC the noise is very low. Due to a proper layout, double voltage regulation and special RF filter the dynamic range is greater than 92 dB (RMS unweighted.) No doubt: DIGI32 PRO is the new professional standard!


Analog hi-performance 20 bit output, up to 96 kHz sample frequency. Dynamic range > 94 dB!
Low impedance output ready for headphones, two levels switchable
Supported sample rates: 32 kHz, 44,1 kHz, 48 kHz, 64 kHz*, 88,2 kHz*, 96 kHz*
(*Only playback on older boards with CS8412. Upgrade available.)
4 inputs switchable during operation
Routing to the output changeable during operation
Outputs optical / cinch / XLR work simultaneous (signal distribution possible)
Ignores copy protection
High sensitive input stage (< 0,2Vpp input level)
High bus transfer rate (> 120 MByte/s)
More than one card with only one driver useable
Inputs and outputs ground-free transformer coupled
Error LED for input signal
Super low jitter design: < 1 ns in PLL mode (44,1 kHz)
AutoSync enables perfect recording in all modes
Sample aligned simultaneous start of record and playback in Record while Play mode
Very low system load through 32 Bit memory transfer and 128 kB fast SRAM
Automatic hardware selftest when booting
Input optical (TOSLINK), coaxial (Cinch), XLR, internal (jumper)
Input format SPDIF and AES / EBU (Consumer, Professional)
Output optical (TOSLINK), coaxial (Cinch), XLRE, internal (Sync Out)
Output format SPDIF and AES / EBU (Consumer, Professional)


Using the 'Settings' tab in the device manager gives you full control over the DIGI32 PRO. 'Input' lets you change the actual input. 'Sample Frequency' tells you which sample rate the signal at the chosen input has (32 kHz, 44,1 khz, 48 kHz, 88,2 kHz, 96 kHz, Out of Range, No Lock.) 'Output' controls the monitoring while recording. 'Automatic' switches the input signal to the output only in record mode, 'Input' all the time except something is played back, and 'Play only' helps you to avoid feedbacks as the input signal will never be passed to the output.

AutoSync allows a constant synchronization to the input signal. The format of the digital output is set up in 'Output Format'. 'Emphasis' sets the Emphasis bit on the digital outputs and forces the analog output to correct its frequency response. All options are available in real-time, without having to reboot or even to click OK!

Newest drivers on our Download Page


Our unique Windows NT driver gives you the same options as the driver for Windows 95! There is only one driver supporting all cards of the DIGI32 series in every combination. This includes the DIGI32 PRO with up to 3 cards, up to 96 kHz, Full Duplex and up to 24 bit.

Newest drivers on our Download Page

8 bit 1 byte (stereo 2 bytes) (only Windows NT)
16 bit 2 bytes (stereo 4 bytes) (works as 32 bit hi-speed transfer)
20 bit 3 bytes MSB (stereo 6 bytes)
24 bit 3 bytes (stereo 6 bytes)
24 bit 4 bytes MSB (stereo 8 bytes) (works as 32 bit hi-speed transfer)
32 bit 4 byte (stereo 8 bytes) (works as 32 bit hi-speed transfer)
  • AutoSync
    DIGI32 PRO works exclusively in slave mode. With AutoSync activated it continuously searches for a valid input signal. So starting a recording on-the-fly is possible (as well as anytime during playback, thanks to Full Duplex) without first having to synchronize the card to the input signal. When using more than one card synchronizing is easy, just spread an input signal to all inputs. In case of 'local loop-back' operation (for example DAT) AutoSync leads to a loss of the digital carrier. For this special application AutoSync can be disabled.
  • SyncAlign
    When the Record while Play mode is activated, the corresponding software first starts Record and then Playback (or Playback then Record.) SyncAlign can compensate the time difference so that an exact simultaneous start of Record and Playback in the Record while Play mode is guaranteed.
  • SuperFast
    As a PCI bus card DIGI32 of course works in 32 bit mode. Instead of being snagged with slow DMA transfer, slow multiple 16 bit transfers using I/O addresses, non-linear memory transfer, or the non-usage of an IRQ (an attempt to get rid of resource problems at the cost of performance and data integrity) DIGI32 uses a linear memory transfer with the full copy speed of modern PC systems. 32 bit data pass the CPU in one cycle, being transferred to the hardware with PCI-bursts. The software is able to send its data without any waitstate. The effective system load is almost zero, which can be shown easily when using more than one DIGI32 PRO in one system.
  • Hi-Performance
    Normally the designer of hardware does not have any influence in the functions of his product, because all features are the result of the chips used. This is not only true for several features, but also for the data format between the hardware, the PC and the software. Usually a large driver is needed to correct, map or translate all these things. But all actions of the driver are also actions of the CPU, ending in a high system load. DIGI32 PRO is different. DIGI32 PRO is made out of a FPGA, a completely programmable chip. Thus a piece of hardware was created which works exactly the way a perfect Digital In/Out card should work and behave. The driver of the DIGI32 PRO does not result in any slowing down the data transfer, because it has nothing else to do than to configure the user's options.
  • Hardware Selftest
    When loading the driver (while booting Windows) DIGI32 PRO performs a hardware selftest. This test was originally only used in production test procedure, but as it lasts only a few hundredths of a second we decided to integrate it into the Windows driver. Therefore you can always be sure when working with Digi32 PRO that all bits are fully functional. In case of an error a message is displayed.

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