BluDento B1 True Hi-Fi aptX HD NFC Bluetooth v5.1 Audio Receiver with COAX OPT RCA Outputs & TI DAC

PRODUCT SPECIFICATIONS:
Bluetooth Version: 5.1 compliant, QCC3034 Chip set;
Bluetooth Profiles: A2DP v 1.3. 1, EDR
aptX HD, aptX Low Latency, aptX Classic, MP3, AAC, SBC audio codecs;
Built-In DAC: TI / Burr Brown PCM5102A;
PCM interface: 32bit, 384kHz (Max);
Supports 48kHz / 24bit LPCM audio data;
DAC SNR (Typical): 112dB;
Receiver sensitivity (basic rate,
typical): 90dBm;
Audio Input: Bluetooth only;
Audio Outputs: Analog Stereo RCA, Digital TOSLINK Optical and SPDIF Coaxial;
Power Supply: DC 5V 0.5A -3A USB power adapter required (NOT INCLUDED)

FREQUENTLY ASKED QUESTIONS:
Is the Bluetooth always on when the unit is powered on, or does it go to sleep? And are all 3 outputs active at the same time?
Yes, always ON, no sleeping mode;
Yes it works. You get output from analog, SPDIF and TOSLINK at the same time.

Is this version also a Bluetooth Audio Transmitter?
This is simply a Bluetooth receiver!

Can you rename the BT device? I want to connect several of these to a multi-zone whole house audio amp & want to know to which zone I am sending.
Yes, we are able to customize the BLUETOOTH ID for pairing instead of the default "B1" ID. Just leave us a note when ordering.

Can you have two identical HIFI Bluetooth music audio receivers in one household?
Yes, but ideally they should have different Bluetooth IDs. BluDento are able to customize the BLUETOOTH ID for pairing instead of the default "B1" ID. You had better leave us a note right after ordering.

If you use the optical out, does it bypass the DAC?
Yes,
digital outputs: Optical & Coaxial bypass the on-board DAC.

Do you have a comparison of your BLT-HD version vs BLT-2 version? What are the primary differences?
Both BLT-2 and BLT-HD are AAC, SBC, aptX, aptX LL supported;
BLT-HD is LDAC supported but BLT-2 NOT;
BLT-2 is Bluetooth v 5.1 but BLT-HD v 5.0;
B1 is NFC-enabled but others NOT.
No more differences.

What is the max VRMS level of the L & R channels outputs?
2.12V at 50HZ at 0dB.

Does the power supply adapter come in the box? If not how do I get it?
No, Any 5V USB charger it's fine.

How many A (amps) minimum does the USB power adapter need to be for this unit?
Min 0.5A.

How many Bluetooth devices can simultaneously stream to this device?
Only one.

How many source devices can be connected at the same time?
Two.

I have multiple phones/tablets/laptops. I can't tell which is currently connected to the device. How can I force-pair the one I have in my hand?
You have to do it manually.

Does it have a on/off button or auto-on when power is connected? And will it remember the connected device when it comes back on after power was cut?
It doesn't have a on/off button; Yes it searches for previously paired Bluetooth devices when powered up.