This might be of interest to some of you. Latest HQPlayer 4 Desktop 4.6.0 features new sinc-S, sinc-L filter and bug fixes. Supports chaining multiple convolution filters and changing convolution algorithm and HF-expansion for matrix. Post-processing plugin support with Bauer headphone cross-feed. On macOS access to audio inputs is requested immediately at application startup time. Merging RAVENNA verified on Windows and macOS.