Low Latenry HD 2-in-1 Transmitter Optical B19

Optical + RCA + 3.5MM: Apart from 3.5mm Aux / RCA Connection, Generic Bluetooth adapter also supports optical cable (Toslink / SPDIF) input/output. With provided optical cable, you can enjoy high-quality digital sound through multiple audio outputs, such as wired stereo speakers or headphones.

Product Details

Transmitter Low Latenry HD 2-in-1 transmitter Optical B19


1. Charging is necessary for first use. It can be fully charged for about 3 hours. The LED lights up red during charging and turns off when it is fully charged,

2. The optical terminal and AUX terminal cannot be used at the same time. Please note that digital output cannot be done simultaneously when digital input.

3. In order use aptX HD and aptX LL, your bluetooth headphones and speaker need to have aptX HD and aptX LL function. Otherwise codec will automatically be aptX or SBC.

Under TX mode, 2 Bluetooth headphones can be paired at once so parents can watch in silence and give children a needed break . Under RX mode, 2 smart devices can be paired for playing different songs. Record 8 devices and automatically re-pairing with existing paired devices.

Auto-Turn Off: In RX or TX mode, The it will automatically turn off if there is no devices to be connected within 10 mins.


Bluetooth Version - 5.0, Class 2

600mAh Rechargeable Lithium battery

Operating time in receiver mode: 22 hours

Operating time in transmitter mode: 26 hours

Charging time: 3 hours

Transmission range: within 10m

Audio coding: TX- aptX HD, aptX Low latency, aptX SBC

Audio coding: RX- aptX HD, aptX Low latency, aptX SBC, ACC

Product Image:

Audio Transmitter and Receiver (5)


Buyers can receive a partial refund, and keep the item(s) if they are not as described or with quality issues by negotiating directly with seller within 7 days from the day the item(s) were received.

1. What are the Payment terms?

1). We accept Paypal, Western Union, and Bank Transfer. 

2). 100% payment for little value bill; 30% deposit and 70% before shipping for big value bill.

2.Q: What are your advantages in this industry?
A: We have strict quality control system, FCC/CE/ROHS approval.      

3.Q: What is your product warranty?
A: We offer 1 year product warranty

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