HQPlayer Pro is a high-quality audio file converter, recorder, and player for 64-bit Windows 7/8.1/10, macOS and Linux. HQPlayer features several user-selectable high-quality resamplers as well as user-selectable dither/noise shaping algorithms and delta-sigma modulators.

It is mainly intended as a mastering post-production tool for producing high-quality final distribution files in various formats. Any of the supported source formats can be converted to any of the supported destination formats. For example, DXD intermediate format can be converted to both PCM and DSD outputs.

Recording and playback are also supported in both PCM and SDM (DSD) formats. Playback feature also allows monitoring of final output format during conversion and recording, monitoring can be enabled/disabled on the fly.

HQPlayer Pro also includes a pipeline matrix for performing channel routing, mixing and gain adjustments, including convolution engine for applying advanced equalization or other kinds of effects.

Supported inputs:

CDDA (Audio CD)

FLAC

WavPack (PCM and DSD)

DSDIFF (DFF, non-compressed)

DSF

RIFF (WAV, including DXD/RF64)

AIFF

MP3

PCM and DSD from an audio device

Supported outputs:

FLAC

WavPack (PCM and DSD)

DSDIFF (DFF, non-compressed)

DSF

RIFF (WAV, including DXD/RF64)

AIFF

MP3

PCM and DSD to an audio device

Features:

Automatic gapless output track splicing for album processing

Switchable realtime output monitoring

Software upsampling / downsampling with selectable algorithm up to 32-bit 1.536 MHz or down to 16-bit 32 kHz PCM (45 options, most "apodizing")

Delta-Sigma modulators for upsampling PCM/DSD content up to 49.152 MHz 1-bit SDM (12 modulators, 3 SDM rate converters, 49 oversampling options)

Direct DSD up / down rate conversions (3 options)

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 de-emphasis equalization for PCM/DSD content

Software-based digital volume control for PCM and SDM (DSD)

Source content analysis to detect need for apodizing oversampling filter

Processing of DSF/DSDIFF files to any supported output (PCM conversion and DSD rate conversion)

Selectable algorithm and noise filters for DSF/DSDIFF to PCM conversion (13 / 12 options)

Native/direct recording and playback of DSF/DSDIFF files (ASIO DSD, DoP v1.1 with both 0x05/0xFA and 0x06/0xF9 markers)

Channel balance configuration for multichannel playback and processing (delay and level), for PCM and SDM (DSD)

Matrix processing for routing, filtering and mixing channels with gain, for PCM and SDM (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, DSDIFF and WAV files (versions 2.2, 2.3 and 2.4)

"Dual wire" channel bonding support to reach 2x rates, PCM and DoP (DSD)

64/80/128-bit and arbitrary precision floating point processing

Full support for multi-core processors

Lightweight desktop-GUI to lower graphics noise

DSP offload to GPU using NVIDIA CUDA

Headphone cross-feed processing

Level adaptive loudness control

High dynamic range and distortion masking MP3 encoding modes

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