Hauptwerk Prerequisites

Hauptwerk Virtual Pipe Organ - Version 3.22 - Prerequisites 

Hauptwerk Prerequisites 

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Hauptwerk Prerequisites 

This section lists the platforms and hardware supported for use with Hauptwerk. Please see also the computer 

specs website page if you are considering buying a new computer to run Hauptwerk and are looking for specific 

recommendations. 

Computer platforms 

The current version of Hauptwerk is supported on Apple Macs (*) (Intel and PowerPC) running Mac OS X, and on 

PCs running Windows. 

If you are buying a new computer to run Hauptwerk, we particularly recommend the current (Intel) range of Apple 

Macs (*), especially the Mac Pro, since we have found them to perform outstandingly well with Hauptwerk, to be 

very simple to set up and use, and also to be very reliable and robust for use with audio and MIDI in general, while 

being reasonably-priced for their performance. Above all, because there are only a few models of Macs, there are 

far less variables than with PCs, so you can be much more confident that you are buying a computer that 

corresponds very closely to one that we have used for testing, benchmarking and developing Hauptwerk, and 

should thus perform the same for you as it does for us. It also means that you shouldn't have to spend time ironing 

out compatibility, driver or performance problems. 

However, we support Windows platforms equally, as we have since Hauptwerk's was first launched. Buying a PC 

that has been specifically built and tested by a specialist vendor for optimum Hauptwerk compatibility and 

performance can be an equally good choice. 

(*) Important note: the current version of Hauptwerk for Mac OS X has the following two limitations compared to 

Windows platforms, which we plan to address in later versions soon: 

1. This version of the Hauptwerk installer currently only includes a 32-bit version of Hauptwerk for the Mac, thus a 

maximum of about 3.5 GB of RAM can be used for Hauptwerk and the sample set being loaded. Please see the 

Hauptwerk website to obtain a 64-bit version (which allows almost unlimited memory to be used). 

2. There is not yet an AudioUnit/VST plug-in version of Hauptwerk for the Mac. However, Audio Hijack Pro can be 

used to apply reverb/convolver plug-ins very easily to Hauptwerk's audio output in real-time. 

Processors 

On the Mac platform all Intel Macs are supported, as well as any of the older PowerPC Macs with G4 or G5 

processors. The latest Macs are recommended for their extremely high performance with Hauptwerk, especially 

the Mac Pro and MacBook Pro ranges. To use 64-bit Hauptwerk for OS X you need a 64-bit capable Intel Mac (all 

Mac Pros and all Macs made after about November 2006 have 64-bit capability). 

On the PC platform, Intel Pentium II and later processors are supported, along with compatible AMD models. The 

Intel 'Core 2' dual and quad-core ranges of processors, along with the corresponding 'Core 2' Xeon ranges, are 

strongly recommended since they perform so well with Hauptwerk. The AMD Opteron and AMD Athlon 64 dual 

and quad-core models are also very good, but the Intel 'Core 2' processors out-perform them for Hauptwerk by a 

very substantial margin at the time of writing. Hauptwerk has native support for 64-bit Windows on 64-bit 

processors (such as the Intel 'Core 2' and AMD Athlon 64 and Opteron ranges), which gives the highest 

performance on the PC platform. 

Hauptwerk is also fully optimized for multi-core/multi-processor systems on both Macs and PCs. Very roughly 

speaking, the more CPU cores, the faster the processor and the more level 2 (L2) cache, the larger the number of 

pipes that will be able to sound at once in Hauptwerk. 

Although fast modern processors enable very large sample sets to be used, they are not requirements, and even a 

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PC with a 1 GHz Pentium III processor will give perfectly sufficient performance for many smaller instruments with 

all of Hauptwerk's features enabled, or larger instruments if some realism features are disabled (such as 

interpolation and per-pipe filters). 

Memory 

An absolute minimum of 512 MB of memory is required to use Hauptwerk, and sufficient free memory is required 

to load any sample sets you intend to use into memory; Hauptwerk deliberately does not stream samples from 

disk in order to achieve the high polyphony necessary for a pipe organ. Most sample sets state the memory they 

require as a prerequisite. In order to be able to use a reasonable selection of sample sets, 2 GB or more of memory 

is recommended. If you are buying a new computer specifically to run Hauptwerk, we would normally recommend 

4 GB or 8 GB if the computer can accept it, which would be sufficient for most current sample sets. 

Note that you can choose to load only some ranks of pipes into memory. Other per-rank memory-saving options 

are also available. 

Hard disks 

An absolute minimum of 4 GB of free disk space is required to use Hauptwerk with the standard St. 

Anne's, Moseley organ sample set installed by default. Other sample sets will require additional disk 

space. We recommend ensuring that you have at least 40-200 GB free if you wish to use a number of 

different sample sets. 

The speed of your hard disk(s) only determines the time it will take Hauptwerk to load a sample set; the 

performance should not be affected once the sample set is loaded into memory. RAID 1 or RAID 5 disk 

arrays can be used if you want sample sets to load quickly and also to make your system more resilient 

to the failure of a hard disk. 

If you are installing Apple Mac OS X from scratch (not usually required), we recommend using the default file 

system during installation, and avoiding the 'case sensitive' file system (a custom installation option) since some 

Hauptwerk sample sets may not be compatible with it. On Windows PCs we strongly recommend using the NTFS 

file system (the default for Windows XP and Vista) instead of the older FAT32. FAT32 does not support files larger 

than 4 GB, which can cause problems for some very large sample sets. 

Operating systems 

On the Apple Mac platform, Hauptwerk is fully supported on OS X 10.5 'Leopard' (versions 10.5.6 and above) and 

10.4 'Tiger' (versions 10.4.11 and above). Hauptwerk might not work on earlier versions and some earlier OS X 

versions had serious bugs that affected Hauptwerk. We recommend Leopard over Tiger, since it has significant 

performance and stability improvements internally that are relevant to Hauptwerk and only Leopard can support 

64-bit Hauptwerk. (1) 

This version of the Hauptwerk installer only includes a 32-bit version of Hauptwerk for the Mac, thus a maximum 

of about 3.5 GB of RAM can be used for Hauptwerk and the sample set being loaded. Please see the Hauptwerk 

website to obtain a 64-bit version (which allows almost unlimited memory to be used). 

OS X Leopard has simultaneous 64-bit and 32-bit support built natively into it. Unlike Windows, there are not 

separate 64-bit and 32-bit versions of OS X, and no separate 64-bit drivers are needed for 64-bit Hauptwerk. 

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On the PC platform, Hauptwerk is fully supported on the following versions/editions of Microsoft Windows: 

Windows Vista Home Basic Edition (32-bit and 64-bit). 

Windows Vista Home Premium Edition (32-bit and 64-bit). 

Windows Vista Ultimate Edition (32-bit and 64-bit). 

Windows Vista Business Edition (32-bit and 64-bit). 

Windows XP Professional x64 Edition (64-bit). 

Windows XP Professional Edition (32-bit). 

Windows XP Home Edition (32-bit). 

Effective memory limits for use with Hauptwerk are as follows: 

64-bit Windows Vista Home Basic Edition: 8 GB. 

64-bit Windows Vista Home Premium Edition: 16 GB. 

64-bit Windows Ultimate Edition: 128+ GB. 

64-bit Windows Business Edition: 128+ GB. 

64-bit Windows XP Professional x64 Edition: 128+ GB. 

32-bit versions of Windows XP and Vista: about 2.75 GB, following modification to the Windows 

boot parameters, otherwise 2 GB (2). 

All editions of Vista and XP support multi-core processors. However, support for two separate physical processors 

is only included in Vista Business and Vista Ultimate editions and XP Professional editions. Earlier Windows 

versions might work with Hauptwerk, but have limitations and we do not test with them. If you wish to use such 

operating systems, we will endeavor to provide support provided that a problem can be reproduced on one of our 

fully supported platforms. 

64-bit versions of Windows are recommended for 64-bit PCs that support it, provided that good-quality 64-bit 

drivers are available for your audio/MIDI interface and other hardware for the version of Windows in question. 

Hauptwerk's installer includes a native optimized 64-bit edition of the Hauptwerk software, which is able to 

perform significantly better than the 32-bit editions, giving a higher polyphony and potential to access almost 

unlimited memory. 

Please ensure that drivers are available for all of your hardware on the operating system you wish to use. 

(1) The only notable disadvantage of Leopard is that it does not allow an application (such as Hauptwerk) to fill the 

memory as nearly as was possible with Tiger when 4 GB or less of physical memory is installed, so Hauptwerk 

might not be able to use quite as much memory on computers with 4 GB or less. Leopard typically allows 

Hauptwerk to use a maximum of about 65 percent of the physical memory before audio glitches become a risk 

(due to 'swapping'). 

(2) 32-bit editions of Windows normally only allow any one program to access up to 2 GB of memory. To enable 

Hauptwerk to use up to about 2.75 GB of memory on 32-bit Windows XP, the Windows boot.ini file (usually 

c:\boot.ini) must be modified manually, adding the /3GB /Userva=2900 switches in a text editor. On 32-bit Vista 

the BCDEdit utility must be used to set the IncreaseUserVA value. Either should only be attempted by experienced 

computer users, since it is very easy to render Windows unable to boot if any mistake is made. Microsoft 

Knowledge Base article 833721 describes the /3GB switch, and Microsoft Knowledge Base article 289022 explains 

how to modify the Windows boot.ini file in general. This Microsoft MSDN page also describes parameters for 

increasing the 2 GB per-application memory limit on XP and Vista. Any such modifications are attempted at your 

own risk. 

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Operating system patches 

All current operating system updates and service packs should be applied when they are available. Important: 

Hauptwerk's installer might not work properly on Windows PCs unless the latest version of DirectX is installed. You 

can check the version of DirectX by selecting Start | Run and typing dxdiag. You can download the latest version of 

the 'DirectX End-User Runtime' from Microsoft's downloads website. On Windows PCs, also make sure that the 

latest drivers are installed for your motherboard and graphics card and that the latest BIOS is installed for the 

motherboard. 

Audio/sound interfaces 

In principle, any audio or sound interface which is supported by the manufacturer on your operating system and 

hardware, and has good drivers should work. Mac OS X has high-performance, low latency audio and MIDI support 

built in, and there is usually less dependence on driver quality than on the PC, so less risk of driver/compatibility 

problems. On PC platforms either ASIO or DirectSound drivers can be used, with good quality native ASIO drivers 

usually giving by far the best performance. 

Any audio interface you use must natively support the sample rates used by the organs you wish to load into 

Hauptwerk (typically 44.1 kHz, 48 kHz and 96 kHz). Note that the default built-in sound output found on many 

computers, including Apple Macs, only supports 44.1 kHz and so cannot be used with sample sets requiring other 

sample rates, such as 48 kHz. The sound quality from most computers' built-in outputs is also not usually especially 

high. 

Since it is impossible for us to test with all products, and some interfaces do have problems with some types of 

drivers on some platforms, we would either recommend using one of the following interfaces, which we test with 

and fully support, or we would recommend testing an evaluation version of Hauptwerk with your system before 

purchasing a license. 

On Mac OS X 10.5 'Leopard' our recommendations are: 

Echo Audiofire 12 (firewire), which has 12 analogue (mono) outputs. 


MOTU 24 I/O (PCIe version), which has 24 analogue (mono) outputs. Mac Pro only. 

Focusrite Saffire (firewire), which has 8 analogue (mono) outputs. 

PreSonus FP-10 (firewire), which has 8 analogue (mono) outputs. 

RME FireFace 800 (firewire), which has 8 analogue (mono) outputs. 

M-Audio FireWire Audiophile (firewire), which has 2 analogue (mono) outputs. 

M-Audio FireWire 410 (firewire), which has 8 analogue (mono) outputs. 

M-Audio Audiophile 2496 (PCI card), which has 2 analogue (mono) outputs. G4/G5 Macs only. 

M-Audio Audiophile 1010/1010LT (PCI card), which has 8 analogue (mono) outputs. G4/G5 Macs 

only. 

On Mac OS X 10.4 'Tiger' our recommendations are: 



MOTU 24 I/O (PCIe version), which has 24 analogue (mono) outputs. Mac Pro only. 




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M-Audio Audiophile 2496 (PCI card), which has 2 analogue (mono) outputs. G4/G5 Macs only. 

M-Audio Audiophile 1010/1010LT (PCI card), which has 8 analogue (mono) outputs. G4/G5 Macs 

only. 

On 32-bit editions of Windows Vista our recommendations are: 



MOTU 24 I/O (PCIe version), which has 24 analogue (mono) outputs. 




E-MU 1212M (PCI card), which has 2 analogue (mono) outputs and built-in reverb. 


E-MU 0404 (PCI card), which has 2 analogue (mono) outputs and built-in reverb. 



M-Audio Audiophile 2496 (PCI card), which has 2 analogue (mono) outputs. 

M-Audio 1010/1010LT (PCI card), which has 8 analogue (mono) outputs. 


Echo Audiofire 12 (firewire), which has 12 analogue (mono) outputs. (1) 







E-MU 1820/1820M (PCI card), which has 8 analogue (mono) outputs and built-in reverb. 


On 32-bit editions of Windows XP our recommendations are: 












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M-Audio Audiophile 2496 (PCI card), which has 2 analogue (mono) outputs. 

M-Audio 1010/1010LT (PCI card), which has 8 analogue (mono) outputs. 

On 64-bit Windows XP x64 our recommendations are: 










M-Audio FireWire Audiophile (firewire), which has 2 analogue (mono) outputs. (2) (3) 

M-Audio FireWire 410 (firewire), which has 8 analogue (mono) outputs. (2) (3) 

M-Audio Audiophile 2496 (PCI card), which has 2 analogue (mono) outputs. (2) (3) 

M-Audio 1010/1010LT (PCI card), which has 8 analogue (mono) outputs. (2) (3) 

We found that performance of the onboard MIDI ports was sluggish with the current Echo drivers for 64-bit 

Windows (only). Hence we would currently recommend using a separate MIDI interface with the Echo Audiofire 

interfaces on 64-bit Windows platforms. 

(2) The current M-Audio 64-bit ASIO drivers only work with 32-bit Hauptwerk, limiting usable memory to 4 GB. 

(3) The current drivers for this interface are beta and/or not fully supported by the manufacturer. We found them to work but you might not be 

able get support from the manufacturer if you have a problem. 

On both Mac and Windows platforms, the Echo, MOTU and M-Audio (1010/1010LT and 2496 only) drivers allow 

several units to be connected to the computer at the same time to give more outputs. 

The Echo, MOTU, Focusrite, PreSonus, RME, E-MU and M-Audio websites have their full specifications. 

Professional or semi-professional audio interfaces with high-quality DACs and drivers are strongly recommended 

above consumer-level sound cards. Apart from audio quality, the quality of the audio interface and its drivers can 

have an enormous effect on performance, as much as halving or doubling the number of pipes that your computer 

will be able to sound simultaneously, and determining the delay between pressing a key and hearing the sound 

('latency'). 

Unless specifically advised to do otherwise, it is usually best to ensure that the latest versions of the 

manufacturers' drivers and firmware are installed. 

Please note that the Creative Audigy 2 interfaces, commonly-used in PCs, do have ASIO drivers, but those drivers 

do not fully support multiple sample rates, and thus cannot be used with some Hauptwerk sample sets in ASIO 

mode. However, the Creative Audigy 2 interfaces do have fairly low-latency DirectSound drivers on both 32 and 

64-bit editions of Windows. In general, we do not recommend the Creative interfaces for use with Hauptwerk 

because of their restrictive ASIO drivers, although they can instead be used with DirectSound drivers. 

Notes about audio interface compatibility with 64-bit Windows: If you intend to use Hauptwerk on 64-bit 

Windows, please check the website of your intended audio interface's manufacturer for genuine 64-bit ASIO driver 

support, and, if possible, test the interface with Hauptwerk first, since some 64-bit ASIO drivers do not yet fully 

work with native 64-bit software. 

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MIDI interfaces 

Similarly, any MIDI interface supported by the manufacturer on your system should work with Hauptwerk. For 

maximum compatibility with our testing we would recommend using one of the following. 

Please note that we do not recommend very small 'micro' USB-MIDI interface, such as the M-Audio MIDISPORT 

UNO, since we have found some such interfaces to have insufficient hardware buffering and to lose occasional 

MIDI messages when the computer's processor is heavily loaded, causing stuck notes in Hauptwerk. That should 

never occur if using a good quality MIDI interface with plenty of buffering, such as any of those we recommend 

here. 

On Mac OS X 10.5 'Leopard' our recommendations are: 

MOTU Micro Lite (USB): 5 MIDI input ports, 5 MIDI output ports. 

MOTU Express 128 (USB): 8 MIDI input ports, 8 MIDI output ports. 

M-Audio MIDISPORT 4x4 (USB): 4 MIDI input ports, 4 MIDI output ports. 


Echo Audiofire 12 audio interface (firewire): 1 MIDI input port, 1 MIDI output port. 


Focusrite Saffire audio interface (firewire): 1 MIDI input port, 1 MIDI output port. 

PreSonus FP-10 audio interface (firewire): 1 MIDI input port, 1 MIDI output port. 

RME FireFace 800 audio interface (firewire): 1 MIDI input port, 1 MIDI output port. 

M-Audio FireWire Audiophile audio interface (firewire): 1 MIDI input port, 1 MIDI output port. 

M-Audio FireWire 410 audio interface (firewire): 1 MIDI input port, 1 MIDI output port. 

M-Audio Audiophile 2496 audio interface (PCI card): 1 MIDI input port, 1 MIDI output port. 

G4/G5 Macs only. 

M-Audio 1010/1010LT audio interface (PCI card): 1 MIDI input port, 1 MIDI output port. G4/G5 

Macs only. 

On Mac OS X 10.4 'Tiger' our recommendations are: 













G4/G5 Macs only. 

M-Audio 1010/1010LT audio interface (PCI card): 1 MIDI input port, 1 MIDI output port. G4/G5 

Macs only. 

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E-MU 1212M audio interface (PCI card): 1 MIDI input port, 1 MIDI output port. 

E-MU 1616M audio interface (PCI card): 2 MIDI input ports, 2 MIDI output ports. 

E-MU 0404 audio interface (PCI card): 1 MIDI input port, 1 MIDI output port. 




M-Audio 1010/1010LT audio interface (PCI card): 1 MIDI input port, 1 MIDI output port. 





Echo Audiofire 12 audio interface (firewire): 1 MIDI input port, 1 MIDI output port. (1) 







On 32-bit editions of Windows XP our recommendations are: 











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M-Audio 1010/1010LT audio interface (PCI card): 1 MIDI input port, 1 MIDI output port. 

On 64-bit Windows XP x64 our recommendations are: 












(2) 

M-Audio FireWire 410 audio interface (firewire): 1 MIDI input port, 1 MIDI output port. (2) 

M-Audio Audiophile 2496 audio interface (PCI card): 1 MIDI input port, 1 MIDI output port. (2) 

M-Audio 1010/1010LT audio interface (PCI card): 1 MIDI input port, 1 MIDI output port. (2) 

(1) We found that performance of the onboard MIDI ports was sluggish with the current Echo drivers for 64-bit 

Windows (only). Hence we would currently recommend using a separate MIDI interface with the Echo Audiofire 

interfaces on 64-bit Windows platforms. 

(2) The current drivers for this interface are beta and/or not fully supported by the manufacturer. We found them 

to work but you might not be able get support from the manufacturer if you have a problem. 

Details of the interfaces can be found on the Echo, MOTU, Focusrite, PreSonus, RME, E-MU and M-Audio websites. 

Unless specifically advised to do otherwise, it is usually best to ensure that the latest versions of the 

manufacturers' drivers and firmware are installed. 

Monitors and graphics cards 

Hauptwerk requires a minimum display resolution of 1024 x 768 pixels with 16, 24 or 32-bit color depth. Some 

sample sets may require higher resolutions in order to be able to display larger organ consoles. Note that 

Hauptwerk's console display can be disabled for use without a monitor. 

On Windows PCs, when using Hauptwerk and the St. Anne's sample set with a screen resolution of 1024 x 768 we 

recommend using Start | Settings | Control Panel | Display, selecting the Appearance tab, changing the Windows 

and buttons setting to Windows Classic style and clicking OK. Then right-click on the Windows task bar and select 

Properties, tick Auto-hide the task bar and click OK. This should enable the console to fit fully on the screen. 

Touch-screens are very popular for use with Hauptwerk, since they provide a simple and effective interface to 

control Hauptwerk's stops, avoiding the need for MIDI draw-knobs/tabs, etc. or any complex MIDI configuration. 

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Many Hauptwerk users use MIDI piston buttons to trigger Hauptwerk's combinations and a touch-screen to 

program those combinations, which is very simple to configure but convenient for performance. 

The Advanced Edition of Hauptwerk has native support for up to four monitors, including touch-screens, allowing 

different virtual console windows to be shown on separate physical monitors. For example you could display stop 

jambs on either side of your MIDI keyboards using two monitors. 

VST hosts 

The 32-bit VSTi plug-in version of Hauptwerk is currently fully supported and tested with the following VST hosts 

on 32 or 64-bit Windows platforms (only): 

• Steinberg Cubase 4 

• Steinberg Cubase SE 3 

• Steinberg V-STack 1.2 (3) 

• Cakewalk Sonar 6.2 and above (both 64-bit and 32-bit) 

• Sibelius 5 (2) 

• GenieSoft Overture 4 (2) 

• Brainspawn Forte 1.6 (1) (2) 

• Image-Line FL Studio 7 

• Magix Samplitude 9 (1) 

• VSTHost 1.40 (freeware)(2) 

The 64-bit VSTi plug-in version of Hauptwerk, running on 64-bit Windows is currently supported on the following: 

• Cakewalk Sonar 6.2 and above (64-bit) 

This host does not allow a plug-in to re-size its 'editor' window, which is necessary when a sample set is 

loaded or unloaded in Hauptwerk, or Hauptwerk is activated or deactivated. With the majority of such 

hosts closing and re-opening the window will force the host to redraw the window at the correct size. 

(2) This host does not support multiple audio outputs with Hauptwerk, so only a single mixed stereo 

output is possible. 

(3) This host does not support multiple sample rates natively. To use sample sets which require rates other than 

44.1 kHz you need an audio interface that allows the sample rate to be adjusted and locked to force the host to 

run at that sample rate. 

The Hauptwerk VSTi plug-in should be compatible with the majority of other VST hosts on the PC platform. 

Although we cannot test on all hosts, as much as possible we will endeavor to support Hauptwerk on any current 

host provided that we can obtain a testing copy from the manufacturer and that any compatibility issues prove to 

be due to Hauptwerk and not the host itself. 

In this release there is no plug-in version of Hauptwerk for the Apple Mac platform, but we plan to add one in the 

future. However, Audio Hijack Pro can be used to apply reverb/convolver plug-ins very easily to Hauptwerk's audio 

output in real-time. Note that it is also possible to use the third-party freeware Jack OS X utility to route audio 

output from Hauptwerk into an audio sequencer or software effects processor in real-time. However, it is quite 

technical and we think some less-experienced computer users might find it complex to configure. 

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Other MIDI sequencer software 

In principle any MIDI sequencer software should be compatible with Hauptwerk. A 'virtual MIDI cable' is required 

to connect Hauptwerk to a non-VSTi MIDI sequencer running on the same computer. 

Mac OS X includes one natively, called the 'IAC Driver', but it is disabled by default. On an Apple Mac please run 

/Applications/Utilities/Audio MIDI Setup, click on the MIDI Devices tab, double-click on the IAC Driver icon and 

then make sure that the Device is online option is ticked. It is preferable (but not essential) to do this before 

running Hauptwerk, since Hauptwerk will then automatically default to using the driver for its 'MIDI sequencer' 

configuration when it is run for the first time. 

On Windows platforms a third-party program is required, such as MIDI Yoke. 

On 64-bit Windows, MIDI Yoke works with 32-bit Hauptwerk but not with 64-bit Hauptwerk. LoopBe is compatible 

with native 64-bit software. 

MIDI keyboards and organ consoles 

To play Hauptwerk 'live' you need at least one MIDI keyboard, or a MIDI organ console, plus leads to connect it to 

the computer's MIDI interface. Hauptwerk is designed to be compatible with the MIDI implementations found in 

the majority of digital and electronic organs, so that MIDI draw-knobs, pistons, swell shoes and so forth can control 

Hauptwerk and be controlled by Hauptwerk where the hardware allows it (1). Please see the MIDI implementation 

section of the user guide for details of the MIDI implementations supported by Hauptwerk. 

As noted above, touch-screens are very popular for use with Hauptwerk, since they provide a simple and effective 

interface to control Hauptwerk's stops, avoiding the need for MIDI draw-knobs/tabs, etc. or any complex MIDI 

configuration. Many Hauptwerk users use MIDI piston buttons to trigger Hauptwerk's combinations and a touchscreen 

to program those combinations, which is very simple to configure but convenient for performance. 

Hauptwerk has native support for up to four monitors (1), including touch-screens, allowing different virtual 

console windows to be shown on separate physical monitors. For example you could display stop jambs on either 

side of your MIDI keyboards using two monitors. 

(1) MIDI output facilities and multi-monitor support are only available in the Advanced Edition of Hauptwerk. 

Amplifier, speakers or headphones 

Hauptwerk produces audio output signals through the computer's audio interface(s). Amplifiers and loudspeakers 

or headphones will then be required to turn those signals into sound. 

The quality of the audio amplifiers and speakers is critical; there is no point spending a lot of money on a computer 

and audio interface and then using PC speakers - the results will almost certainly be terrible. At the very least, a 

good quality stereo hi-fi amplifier and pair of speakers should be used, or good quality hi-fi headphones. Recording 

studio monitor speakers are usually good alternatives. For amplification in large buildings, it is often better to have 

many smaller high-quality amplifiers and speakers than a few high-powered ones. 

Hauptwerk fully supports multi-channel audio output (1), so you can amplify different organ ranks, or parts of 

ranks, separately if you wish and have a multi-output audio interface. You can also distribute pipes within groups 

of available channels. This enables a three-dimensional sound to be created and minimizes some types of 

distortion inherent in loudspeakers. It is usually the preferred method of amplification with dry sample sets used in 

reverberant spaces. 

(1) Multi-channel audio output is only available with the Advanced Edition of Hauptwerk. 

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Spare USB port 

Hauptwerk is licensed by means of the Hauptwerk USB key. To use a licensed version of Hauptwerk you will need a 

spare USB port to connect it. If your computer does not have sufficient ports then you will need to get a USB hub 

and cable to add more. We recommend only using good quality USB hubs with separate power supplies to ensure 

that the dongle functions reliably. 

Important note 1: Since it is not possible for us to test with all hardware and third-party software, we would 

recommend testing an evaluation version of Hauptwerk with your system before purchasing a license. 

Important note 2: Milan Digital Audio does not make or sell computer hardware. We hope you find any 

recommendations we give useful as reference but we cannot guarantee that any given combination of PC parts or 

drivers will work or perform well together, regardless of whether some of them follow our recommendations. We 

are sorry we cannot provide a significant level of help or advice for computer hardware, beyond the 

recommendations made in the user guide and on our website. If you need help or support with building PCs, using 

computers, or buying, installing or using PC components, please make sure that you have a support contract with a 

company that can provide that support. If you are considering buying a computer to run Hauptwerk and you do 

not have much experience with building computers, diagnosing driver and hardware compatibilities, and so forth, 

we would recommend either buying an Apple Mac (Apple Macs give superb performance 'out of the box') or 

buying a PC from a company that offers ready-made high-performance PCs designed and tested for use with 

Hauptwerk. The MIDI hardware section on our website lists several such companies. 

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Hauptwerk Prerequisites

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