I see that the last response from Rose is from November 2022. Has there been any updates regarding Rose fully supports Hi-Res Apple Music? I’ve recently tried the Eversolo DMP A6 and it is capable of streaming hi-res Apple music. If Eversolo successfully implemented this, I truly hope Rose has also done the same or better. My Rose is on its way and I hope I don’t have to return it.
Only Apple hardware or software developed by Apple products and apps support lossless music.
Since the app (software) on the Android phone was also developed by Apple, it supports lossless sound sources.
So, until now, Apple hardware or software supports only up to aac256 bps unless it is a product or app developed by Apple.
For hi-fi audio equipment, I think Apple Music will gradually expand technology disclosure.
If Apple releases this part in the future, we will be able to apply it.
Additionally, we will explain the differences in how to play Apple Music lossless music on other products.
Hi-Fi Rose does not use the Android Audio Framework to provide HIFI Audio services but is designed to deliver pure audio data to the DAC without loss by using the self-developed Rose Audio Server.
Since we use the Android OS, there are many people who misunderstand that the Audio System also uses the Android Audio System, so I would like to explain the current audio playback structure of Hi-Fi Rose in more detail.
Basically, we use Android to provide a smooth touch screen-based user interface. Additionally, all processes related to HDMI output and graphics on the LCD are performed through the Android Framework. Android’s graphics system is very well tuned compared to other OSs, so the CPU calculations and power consumption required to provide a similar interface are relatively small. This has the advantage of minimizing interference in audio-related processing despite providing a rich graphical interface.
In addition, video playback, system settings, etc. are also used by taking advantage of Android.
The audio system does not use the Android Framework. To provide HIFI Audio service, all steps from I/O to sending audio data to DAC were implemented using the Rose Audio Server we developed ourselves.
Figure 1 is the traditional Android audio structure. A mixer is implemented on the Android Framework to support various audio channels (calls, notification sounds, multimedia, alarm etc.), and all audio is played through this mixer. Because of this, transcoding inevitably occurs in the audio data, and even when playing lossless sound sources, they are played at a specific Bit/Sampling Rate.
However, Hi-Fi Rose products do not use the Android Framework for audio playback, as shown in Figure 2.
When playing audio, only the path is passed to the Rose Audio Server, and the Rose Audio Server directly reads the audio source (file/stream, etc.), converts it into pure audio data (PCM/DSD), and uses the ALSA (Advanced Linux Sound Architecture) API. to pass audio data to the DAC on the Linux Kernel. Rose Audio Server is a framework for HiFi Audio developed directly by Hi-Fi Rose to deliver audio data as it is to the DAC without modification, support MQA Decoding, or perform DSP functions such as EQ (RS201), MQA Decoding, Resampling, etc.
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Thank you for the response with details. I hope soon Rose will be able to implement Apple music the best possible.
I reale hope it will come. I am interested in your products, but all my music is related to Apple Music. I have not invested money in a good sound system for listening to compressed audio, Lossless and HiRes is therfor a must. I still have to use a iPad connected over USB to my Oppo 205 acting as a DAC.
EverSolo have problems with the newest versions of Apple Music for Android 4.7, that is not a solution for me.
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Only Apple hardware or software developed by Apple products and apps support lossless music.
Since the app (software) on the Android phone was also developed by Apple, it supports lossless sound sources.
So, until now, Apple hardware or software supports only up to aac256 bps unless it is a product or app developed by Apple.
For hi-fi audio equipment, I think Apple Music will gradually expand technology disclosure.
If Apple releases this part in the future, we will be able to apply it.
Additionally, we will explain the differences in how to play Apple Music lossless music on other products.
Hi-Fi Rose does not use the Android Audio Framework to provide HIFI Audio services but is designed to deliver pure audio data to the DAC without loss by using the self-developed Rose Audio Server.
Since we use the Android OS, there are many people who misunderstand that the Audio System also uses the Android Audio System, so I would like to explain the current audio playback structure of Hi-Fi Rose in more detail.
Basically, we use Android to provide a smooth touch screen-based user interface. Additionally, all processes related to HDMI output and graphics on the LCD are performed through the Android Framework. Android’s graphics system is very well tuned compared to other OSs, so the CPU calculations and power consumption required to provide a similar interface are relatively small. This has the advantage of minimizing interference in audio-related processing despite providing a rich graphical interface.
In addition, video playback, system settings, etc. are also used by taking advantage of Android.
The audio system does not use the Android Framework. To provide HIFI Audio service, all steps from I/O to sending audio data to DAC were implemented using the Rose Audio Server we developed ourselves.
Figure 1 is the traditional Android audio structure. A mixer is implemented on the Android Framework to support various audio channels (calls, notification sounds, multimedia, alarm etc.), and all audio is played through this mixer. Because of this, transcoding inevitably occurs in the audio data, and even when playing lossless sound sources, they are played at a specific Bit/Sampling Rate.
However, Hi-Fi Rose products do not use the Android Framework for audio playback, as shown in Figure 2.
When playing audio, only the path is passed to the Rose Audio Server, and the Rose Audio Server directly reads the audio source (file/stream, etc.), converts it into pure audio data (PCM/DSD), and uses the ALSA (Advanced Linux Sound Architecture) API. to pass audio data to the DAC on the Linux Kernel. Rose Audio Server is a framework for HiFi Audio developed directly by Hi-Fi Rose to deliver audio data as it is to the DAC without modification, support MQA Decoding, or perform DSP functions such as EQ (RS201), MQA Decoding, Resampling, etc.
2 Likes
Thank you for the explanation about the challenges with Apple Music. I received my Rose RS130 yesterday. I hear a great improvement over my old streamer. I did notice that Apple Music was an app on the Rose before I purchased. Previous to 2021, all Apple had was AAC and that’s the only format for purchase from the iTunes Store. I was a little disappointed even before the unit arrived to learn about the AAC format available through Rose. This is all on Apple. I’m an Apple Music subscriber and usually only listen to it in my car as it works with Android Auto. I also subscribe to Tidal and have a huge NAS library. I listen to Tidal and the NAS at home. Awesome sounding streamer. I’ll hope that Apple becomes more flexible over time. Apple Music is only available on most devices through Airplay. I know one person that just streams off his computer to his DAC to get the lossless and HiRez from Apple. I’m not that much of an Apple fan!