Long confined to office use, gaming, or occasional streaming, the PC is rarely considered a serious audiovisual source. However, when properly configured, it is capable of competing with very high-quality sources. Native access to high-resolution files, extensive support for streaming services, considerable decoding power, permanent software upgradability: the PC’s potential is quite simply colossal. A true digital Swiss army knife, it can become the heart of a complete hi-fi or home theater system, provided it is properly configured and optimized.
The PC: a source with infinite possibilities
A modern computer is capable of playing virtually all existing audio formats: PCM up to very high resolutions of 32-bit/1,573kHz or more, DSD, FLAC, ALAC, WAV, AIFF, etc. It also provides access to platforms such as Qobuz, Tidal, Apple Music and Spotify, with no hardware limitations imposed by third-party manufacturers.
The potential is just as impressive for video. With 4K HDR file playback, Dolby TrueHD, DTS-HD Master Audio, Dolby Atmos or DTS:X track management, and precise adjustment of display frequencies, the PC has all the cards in hand to deliver an immersive experience for movies, TV series and video games. But without optimization, it remains a consumer device whose default settings favor simplicity over fidelity.
Optimizing audio output for hi-fi
On both Windows and macOS, the internal audio engine is designed to mix all system sounds before sending them to the selected output. System alerts, app sounds, browser, audio player: everything passes through the same channel, no matter how the computer is connected. This universal management often requires automatic resampling of the signal to a shared frequency. In Windows, for example, the system operates at a frequency defined in the audio parameters. If this is set to 48kHz (the current value), a 96kHz file will be converted to 48kHz on the fly, without the user being aware of it. This operation disrupts the integrity of the original signal, compressing or even deleting information.
How to optimize audio output in Windows
To optimize audio output from a Windows PC, go into the audio settings, then the properties of the playback device (USB DAC or HDMI output). In the “Advanced” tab, we advise you to select a resolution suited to your needs, typically 24-bit/44.1kHz if you mainly listen to CD files, or 24-bit/192kHz if you use a lot of high-resolution content. It is also advisable to deactivate all audio enhancements offered by the system.
The second optimization involves the use of an exclusive mode. By enabling this in the device properties, you authorize compatible software to take full control of the audio output. Players such as Foobar2000, Audirvana, Roon or even the Qobuz app can then use exclusive WASAPI or ASIO modes. In concrete terms, this means that the signal is sent directly to the DAC without passing through the Windows mixer. Each file is played back at its native frequency, with no imposed conversion. In the chosen software, all you need to do is select the corresponding audio device in WASAPI (Event or Exclusive) or ASIO mode in the output parameters. Once configured, the system will no longer be able to superimpose sound notifications during playback, a sign that the stream is fully dedicated to music.
How to optimize audio output under macOS?
Under macOS, audio management is simpler. The “Audio MIDI Setup” utility lets you check the sample rate associated with the selected output. Here too, it’s a good idea to adapt this value to the type of files you’re listening to. However, as with Windows, the system fixes a single frequency until it is dynamically modified by software. A specialized player such as Audirvana or Roon can automatically adjust the DAC frequency according to the file being played, avoiding unnecessary conversion.
External DAC: a real increase in quality
Even when perfectly configured, a PC still relies on its internal digital-to-analog conversion section when connected via its headphone output. This audio section, integrated into the motherboard, is primarily dictated by cost, size, and versatility. It is rarely designed for high-fidelity listening on a hi-fi system or with headphones.
This is precisely where an external USB DAC comes in. By entrusting conversion to dedicated electronics, the computer is transformed into a simple digital transport. It simply transmits a data stream, leaving the crucial conversion stage to a specialized device. Careful power supply, precision clocking, jitter control and fittingly sized analog stages are all crucial to preserving signal integrity. The increase in quality is generally immediate. The audio reproduction gains greater sharpness, detail, and clarity. Added to this is extensive compatibility with high-definition formats: PCM up to 32-bit/768kHz for certain models, native DSD up to DSD512, and even more for the most ambitious DACs.
Integration is equally flexible. DACs with RCA or XLR outputs can be connected directly to a hi-fi amplifier. Other models integrate their own headphone amplifier to power high-impedance or low-efficiency headphones. This configuration is ideal for listening in complete privacy and without disturbing others, especially when working in an open-plan office.
Lastly, many modern active speakers now come with their own USB DAC. Connected directly to the computer via a single cable, they take care of the digital-to-analog conversion themselves, with full optimization between the converter, internal amplification, and drivers. For those looking for a simple, elegant installation capable of true high-fidelity reproduction, these active speakers with integrated USB DAC represent a highly relevant alternative to traditional separate systems for the office or studio.
How to use a PC as a home theater source
A computer can also be of interest for home theater use. Connected via HDMI to an AV receiver or soundbar, the computer becomes capable of transmitting high-definition audio streams with a flexibility that few consumer sources can match. While certain multimedia devices or streaming platforms limit the formats available, a properly configured PC can manage all the audio tracks present in a file or on a disc.
However, it is essential to configure the HDMI output correctly. The choice between PCM and bitstream is decisive. With PCM, the PC decodes the audio track itself and sends an uncompressed multichannel signal. With bitstream, it transmits the raw stream to the AV receiver or soundbar, which then decodes and distributes the channels. Operation is then strictly identical to that of a home Blu-ray player. To preserve immersive formats such as Atmos or DTS:X, bitstreaming is essential.
However, the set up requires special attention. In Windows, you need to access the audio settings, select the HDMI output corresponding to the amplifier, and then check the compatible formats in the device properties. It is essential to activate compatibility with the available Dolby and DTS formats. Then, in the video player software, be it Kodi, JRiver, VLC or another advanced player such as MediaPortal, you’ll need to activate the bitstream or passthrough option to enable the audio stream to be sent directly to the AVR.
Picture quality: a previous shortcoming for PCs
While a computer’s audio section can easily compete with dedicated sources once a separate DAC or a properly configured HDMI output comes into play, the video section has long been the weak link. For years, PCs struggled to match the best TVs, projectors and media players, especially when it came to HDR management. Software implementations were sometimes approximate, dynamic metadata management limited, and tone mapping often poorer than that integrated into specialized displays.
Windows, in particular, has long suffered from perfectible HDR management, with an image that is sometimes too bright, washed-out or inconsistent depending on the apps used. Activating system HDR did not always guarantee faithful reproduction of content, especially in the absence of precise display calibration. Added to this were constraints linked to graphics drivers and the compatibility of older cards, which sometimes limited effective color depth to 8 bits or restricted bandwidth in 4K.
However, the trend is reversing with modern graphics cards now offering far more mature support for today’s video standards. HDR10 management is fully integrated, 10-bit output via HDMI 2.0 or HDMI 2.1 has become commonplace, and internal processing capabilities have advanced considerably. It is now possible to activate a display at 23.976 Hz 4K (or more for gaming) with adapted color depth, while maintaining a color space in line with video standards. This adjustment precision is one of the PC’s greatest assets. Where some set-top boxes impose fixed or limited settings, a PC lets you choose the precise display frequency to match the content being viewed, thereby avoiding micro-stuttering.
Another notable development is the video processing capabilities of today’s GPUs. Advanced scaling, noise reduction filters, interpolation, sharpness processing and fine color management are now integrated into hardware. Coupled with high-performance playback software, these tools make it possible to optimize the reproduction of a video file, particularly when playing back HD content on a 4K screen. Of course, a high-end TV or projector will often retain an advantage when it comes to specific internal processing, particularly for dynamic HDR formats such as Dolby Vision, which are not yet natively handled by PCs. But the gap is narrowing significantly with current generations of graphics cards and ever-improving operating systems.
Software: the brain of the system
In a computer-based installation, hardware is only part of the equation. The graphics card, external DAC and HDMI connection obviously all play a decisive role, but it’s the software that orchestrates everything. It manages the audio stream, decides how it’s transmitted, adjusts sampling frequencies, drives peripherals, and structures the entire user experience.
Software for hi-fi
Dedicated audio playback software such as Foobar 2000, Audirvana or Roon’s primary role is to transmit a bit-perfect stream, strictly faithful to the data in the original file.
Foobar 2000
Among these programs, Foobar 2000 stands out for its minimalist yet extremely rigorous approach. Highly appreciated by discerning audiophiles, it offers great configuration flexibility, extensive compatibility with many audio formats and the ability to precisely optimize the playback chain. Its austere interface may be off-putting at first, but its transparency and lightness make it a benchmark for those who place signal fidelity above all else.
Audirvana
Audirvana adopts a different philosophy, more focused on the overall listening experience. Designed specifically for hi-fi use, this software focuses on audio flow optimization, advanced management of high-definition formats and seamless integration of streaming services. It can work with both USB DACs and network players, supporting streaming via USB, AirPlay or via local network in DLNA. Ergonomics are more accessible, without sacrificing technical requirements.
Even more ambitious, Roon redefines the role of playback software in a modern hi-fi installation. Much more than a simple player, it acts as a music ecosystem. Roon centralizes the local library, streaming services and network distribution within a richly documented interface. It allows multiple listening zones to be controlled, and different DACs or network players to be addressed simultaneously, while guaranteeing rigorous audio signal management. This approach requires a solid network infrastructure and compatible hardware, as well as a certain investment since the software is licensed, but in return it offers one of the most accomplished experiences on the market.
Software for home theater playback
In a home theater context, other software solutions naturally take over. Where Foobar2000, Audirvana and Roon focus on the purity of the stereo stream, software such as JRiver, Kodi and VLC adopt a global multimedia approach, designed to transform the PC into a truly universal audio-video player.
JRiver Media Center
JRiver Media Center stands out for its versatility and extensive configuration options. Designed for both audiophiles and home theater enthusiasts, it provides fine-tuned audio signal management, for both multi-channel PCM output and HDMI bitstream. It supports multichannel formats including Dolby Atmos and DTS:X. Its advanced video engine also enables precise control of the display, output frequency and HDR processing.
Kodi
Kodi adopts a different philosophy, more focused on user experience and visual ergonomics. A truly customizable multimedia interface, it lets you organize movies, series, concerts and music content within a richly illustrated library, complete with movie posters, summaries, and metadata. On the technical front, Kodi also offers audio passthrough via HDMI, enabling direct transmission of high-definition multichannel streams to AV receivers or soundbars.
VLC
VLC is in a class of its own. Less geared towards advanced library management or fine-tuning, its simplicity and versatility make it a real winner. Capable of playing virtually all audio and video formats without the need to install additional codecs, it is often the natural entry point to multimedia playback on the PC. While it doesn’t offer the same level of fine-tuning as JRiver or Kodi, it does enable a multi-channel HDMI output and can handle bitstreaming to a compatible amplifier.
Plex
Plex takes a more centralized approach to home streaming. Designed as a multimedia server, it transforms the PC into a true audiovisual hub, accessible from other devices on the network: smart TVs, set-top boxes, smartphones or compatible players. Plex automatically organizes films, series and concerts with posters, synopses, and enriched metadata, offering an experience akin to that of streaming platforms. On the technical side, it can play and transmit high-definition streams, with multichannel management via HDMI or distribution to compatible devices, depending on the chosen configuration. Its ability to unify all the multimedia content in the home within a fluid ecosystem is also very appealing.
MediaPortal
MediaPortal continues the tradition of home theater interfaces designed for the living room. Initially developed as an open source alternative to proprietary media centers, it transforms a PC into a true multimedia hub, controllable by remote control. Its strength lies in its modularity and extensive compatibility, with management of video libraries, TV channels (via a compatible tuner), and multi-channel audio formats transmitted via HDMI. MediaPortal favors a structured approach, geared towards everyday domestic use, with poster display, detailed metadata and organization by category.
A modern, scalable, high-performance source
Transforming your PC into a true hi-fi and home theater source takes a little time, but the results can be spectacular. With a well-chosen external DAC, rigorous audio settings, a correctly configured HDMI output and appropriate software, the computer becomes a perfectly legitimate link in a sophisticated installation. Its biggest strength lies in its versatility. It combines local playback, high-resolution streaming, advanced multichannel decoding and constant software upgradability. Properly integrated, it can become a true audiovisual hub, capable of combining hi-fi precision and cinema immersion without major compromise.
