I just want to say that Aqua’s LinQ streamer/DAC combo is a high-end audio product that has received generally positive reviews from audiophiles and reviewers alike. In terms of sound quality, many users have reported a significant improvement over lower-priced streamer/DACs. However, as with all audio equipment, the sound quality is subjective and depends on a variety of factors such as personal taste, the rest of the system, the room acoustics, and the music being played.
Regarding the HQPlayer Core module option for the LinQ, it is designed to provide the same flexibility and customization as the standalone HQPlayer software, with options for upsampling, filtering, and other processing features for both PCM and DSD. This means that you can use the LinQ as a Roon endpoint, and it will handle all the HQPlayer processing, so you wouldn’t need a separate PC or Linux box running Roon Core duties. MyAccountAccess
Overall, whether the upgrade to the Aqua LinQ streamer/DAC combo is worth the investment depends on your personal preferences, system setup, and listening habits. If you’re looking for high-end audio performance and are willing to invest in a premium product, then the Aqua LinQ may be a good option for you. However, if you’re satisfied with the performance of your current RoseHifi 150B, you may not see a significant improvement with the upgrade.