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I was really excited to get a R3 Pro to use with my FLAC files and Tidal HiFi subscription. I bought a pair of Sony 1AM2 headphones to go with it as well. The sound is phenomenal using a wired headset with a balanced cable.
However, bluetooth is a different story. Bluetooth has been horrendous. The range is terrible as you have to be right next to the device. With my Samsung Note 10+ I never have bluetooth issues and can be across the room. I also continue to have playback issues over bluetooth where songs get delayed during playback and will speed up as well. This is on both Tidal and FLAC files on the micro SD.
I have also had issues with the interface freezing up and becoming unresponsive. When this happens, all I can do is reboot.
Vendor's solution is for me to pay to send it to China to be looked at.
I had really high expectations when purchasing this device. Hopefully future firmware updates will improve the bluetooth performance.
I bought this device specifically to reorganize my library, use it as a music device that would stream to my sound systems. I have Revel Studio speakers, and Adcom power amplifier, Adcom preamp, and Denon high end Bluetooth - CD player. To play music I use two different phones connecting via Bluetooth to Audioengine B1 Bluetooth receiver, and also I just received SMSL M200 Bluetooth Audio with DAC AK4497 - which showed slight improvement over B1. All above combinations are indistinguishable from CD player output. With M200 having almost imperceptible edge over B1.
Now having set the background of the equipment, here is what happens: HiBy R3 Saber produced strangely muddied vocals in female techno music in default flat output. That is, it was expected to be flat, but it isn't.
All I want is for my FLAC music files to be transfered via LDAC to the Bluetooth receiver, whose DAC should take care of the rest. And it does, even from Samsung and Alcatel phones, as compared to the CD reproduction. HiBy R3 Saber on the other hand seems nice on something like New Age, and classical is almost OK, but the demanding techno catches it with pants down, so to speak. Playing with numerous controls allows to modify the sound parameters, and make it sound better. Which proves that the sound runs via DAC on the device, so it can be manipulated, and then it is packed back in LDAC and transferred. Why? I guess, main purpose of the device is to play into a headset, and bluetooth output is an afterthought.
It had firmware 1.5, and I tried and updated it to the most current 1.6, without any improvement improvement.
As I can't trust this gizmo to serve the purpose I needed it for, I will try to return it. And stick to trusty Samsung with Pulsar player. HiBy R3 is of no use to me. I give it 2 stars rather than one, because it is quite a nice looking little gizmo. But, what a disappointment at $209, this is not a feature, it is really a defect in transfer design!