HQPlayer 4 Pro + HQPlayer 4 Desktop (Thread updated by Soda)
Streaming partners:
Supported source formats:
- CDDA (Audio CD)
- FLAC
- WavPack (PCM and DSD)
- DSDIFF (DFF, non-compressed)
- DSF
- RIFF (WAV, including DXD/RF64)
- AIFF
- MP3
- RAW streams
- Realtime audio inputs
Supported playlist formats:
- M3U / M3U8
- PLS
Features:
- Software upsampling / downsampling with selectable algorithm up to 32-bit 1.536 MHz or down to 8-bit 32 kHz PCM (39 options, most "apodizing")
- Delta-Sigma modulators for upsampling PCM/DSD content up to 98.304 MHz 1-bit SDM (14 modulators, 43 PCM oversampling options and 2 DSD rate converters)
- Selectable dithering / noise shaping algorithm (9 options)
- Selectable convolution algorithm (FIR) for equalization, such as digital room correction (2 options), for PCM/DSD content
- Optional high-frequency expansion for the convolution engine
- Parametric equalizers for PCM/DSD content
- RIAA equalization for vinyl sources
- Software-based digital volume control for PCM and SDM (DSD)
- Source content analysis to detect need for apodizing oversampling filter
- Playback of DSF/DSDIFF files through any supported audio interface (PCM conversion and DSD rate conversion)
- Selectable algoritm and noise filters for DSF/DSDIFF PCM playback (12 / 9 options)
- Native/direct playback of DSF/DSDIFF files (ASIO DSD, DoP v1.1 with both 0x05/0xFA and 0x06/0xF9 markers)
- Playback of stereo, 2.1, 3.0, quadrophonic, 3.1, 5.0, 5.1 and 7.1 channel material
- Speaker configuration for multichannel playback (delay and level) for PCM and SDM (DSD)
- Matrix processing for routing, filtering and mixing channels with gain, for PCM/DSD content
- Bypasses operating system software mixer and sample rate conversion
- Support for professional ASIO drivers
- Network endpoint support with Signalyst Asynchronous Network Audio Adapters
- Support for ID3v2 tags on AIFF, DSF, WAV and MP3 files (versions 2.2, 2.3 and 2.4)
- Smooth level limiter for clipped material
- "Dual wire" channel bonding support to reach 2x rates, PCM and DoP (DSD)
- 64/80-bit floating point processing
- Full support for multi-core processors
- Light weight desktop-GUI to lower graphics noise
- Touch-aware remote control client
- DSP offload to GPU using
- Headphone cross-feed processing
- Adaptive loudness control
- Support for ReplayGain 2.0 metadata
Resampling filters:
- 24 linear phase
- 2 intermediate phase
- 10 minimum phase
- 3 impulse optimal
- 3 closed form
Dithers and noise-shapers:
- 4 dithers
- 5 noise shapers
Delta-Sigma conversion:
- 14 modulators
- 43 oversampling filters (64x - 2048x)
- Direct rate conversions, 2 algorithms
- Digital volume control
- Convolution engine
- Routing and mixing
External control applications:
- HQPDcontrol /
All modern DACs employ oversampling and delta-sigma modulation, however the hardware implementations are more or less resource constrained. Higher quality oversampling and delta-sigma modulation can be done by utilizing vast mount of processing power available in modern PCs. Many AVRs also resample internally to 48, 96 or 192 kHz, with the HQPlayer, these can be fed at the native rate.
Want to buy 192/24 or DXD files for future but currently own only 96/24 capable hardware? Or want to buy DSD128 or DSD256 files but currently own only DSD64 or 192/24 PCM capable hardware? Resampling and dither/noise shaper can be used to playback high resolution files on a lower resolution hardware, allowing future-proof investment on high resolution files.
For digital room correction and other equalization purposes, selectable convolution algorithms are included. Convolution engine supports RIFF (WAV) format FIR impulse responses, which can be produced with suitable software, such as , + , , or .
Network Audio Adapter
Network audio is especially useful to give freedom from cables when player is run on a tablet or other wireless device.Processing is performed by the player application and the processed data is then asynchronously streamed over network to a very lightweight network audio adapter interfacing to the DAC. Asynchronous FIFO provides maximum isolation between processing and audio reproduction.
System requirements, Windows version:
- Windows 10 x64
- Audio interface with support for WASAPI Exclusive or ASIO
- CPU support for AVX2 instruction set
- Display adapter with OpenGL support
- Minimum full-HD resolution (1080p)
- PDF reader software (such as or )
System requirements, Linux version:
- 20.04 LTS (64-bit) or 34
- Audio interface with ALSA-drivers
- CPU support for SSE4.2 (AVX2 on Fedora) instruction set
- Display adapter with OpenGL support
- Minimum full-HD resolution (1080p)
System requirements, macOS version:
- macOS version 10.15 or later for x64
- macOS version 11.0 or later for arm64
- Audio interface with CoreAudio drivers
- Minimum full-HD resolution (1080p)
System requirements, CUDA offload:
- NVIDIA GPU
- Minimum
- Latest
Recommended hardware:
- aqua NAA
- iFi
- (Win/Linux/Mac)
- (Win/Linux/Mac)
- Holo Audio May/Spring/Cyan, shops: / (Win/Linux/Mac)
- RME ADI-2 / (Win/Mac/Linux)
- Merging / / /
- Denafrips / / / /
- Ferrum PSU
- CAPS Twenty and
- DACs (Win/Mac)
- EVGA NU Audio / (Linux)
- as a NAA with Linux (using provided bootable image)
- as a NAA with Windows or Linux (using provided bootable image)
Devices with built-in NAA:
- aqua
- iFi
- exaSound
- Sonore / as a NAA
- SOtM / / as a NAA
- StackAudio
- exaSound / / /
Control applications:
- HQPlayer Client (included, Windows/macOS/Linux)
- HQPDcontrol on and
