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- USA
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
Measy AU680 Wireless Audio Speaker Transmission Box, Transmitter & Receiver, Transmission Distance: 100m, AU680Features 1. High quality transmit with 48k 16bit sampling. 2. Uncompressed transmit. 3. About 100 meters transmit of outdoors. 4. It is easy to use,plug and play. 5. AU680 wireless audio transmitter is a transmitter that enables wireless audio for home entertainment. 6. The product consists of the transmitter and the receiver. Specification 1. Operating Voltage: Transmitter: DC 3. 6V 5. 5V; Receiver: DC 3. 6V 5. 5V 2. Working current: Transmitter:
Features1. High-quality transmit with 48k-16bit sampling.
2. Uncompressed transmit.
3. About 100 meters transmit of outdoors.
4. It is easy to use,plug and play.
5. AU680 wireless audio transmitter is a transmitter that enables wireless audio for home entertainment.
6. The product consists of the transmitter and the receiver.
Specification
1. Operating Voltage: Transmitter: DC 3.6V-5.5V; Receiver: DC 3.6V-5.5V
2. Working current: Transmitter: 250mAh; Receiver: 100mAh
3. Ambient temperature: 0-85 degree C (Transmitter and Receiver)
4. The actual operating frequency range of the modual: 749-770MHz (Transmitter and receiver)
5. Modulation: Pi/4DQPSK (Transmitter)
6. Channel spacing: 4MHz (Transmitter and receiver)
7. Frequency selection method: Transmitter: Carrying channel one-way loop selection; Receiver: Provides automatic search and manual conversion of two models
8. Frequency stability: +/-100KHz (Transmitter and receiver)
9. The actual working channel of the modual: 20CH
10. Module channel spacing: 1MHz
11. Transceiver distance (using transmit power 100nv in open space): 100m
12. Transmit power (default is 100nV when ordering): 1-100mV (default 100mV)
13. Receiving sensitivity: -95dBm(Receiver)
14. Input level: 1.0VpK(Transmitter)
15. Input resistance: 10K ohm (Transmitter)
16. Input interface (Transmitter):
- Three input modes
-Stereo audio input
-Normal microphone input
-Monitor pickup audio input
17. Stereo input level 1: 30mW RL=32ohms (Receiver)
18. Stereo input level 2: 50mW RL=32ohms (Receiver)
19. Output impedance: 1k ohms (Receiver)
20. Input-output gain ratio: 1:01
21. Sphere of influence: 20-20000Hz
22. Time latency: 2.5ms
23. Sampling Rate: 48KHz 32bit
24. Signal to noise ratio: 96dB
25. Distortion: 0.3% at 1KHz
26. Dynamic Range:90dB
27. Left and right channel isolation: 85dB
Package List
1. Transmitter x 1
2. Receiver x 1
3. USB power cable x 2
4. Manual x 1
Specification:
| Package Weight |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 512 reviews
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Product Reviews
★★★★★ 5
Great sound mat for the price!
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
This is a good product. Many people go with KILMAT because of the value to price point. I did as well. When you clean the surface (in my case it was all painted metal) this stuff sticks very well. I do recommend you use a seam roller of some type, I used Lumiteco 3 piece roller set. This will help with adhesion and mostly flatten the overlapped edges. It also helps you see where you have rolled as it leaves little grooves. The difference when we had no sound mats and after was very impressive. We haven't finished our install yet and it is quieter than when we had an interior in the van. There are thicker mats available in other brands, but this will work great for our van build, but this helps keep the weight down. It is quality material, just be careful when you are removing the backing, the edge of the foil face can cut you. I suggest you layout where you are installing the mat and cut to fit. From what I have read, you don't need to cover every inch in the vehicle, just spot install for a big difference. I chose to cover most surfaces to help keep sound out when we are sleeping in the van. We haven't finished putting the van yet, but we have driven it around and been very satisfied with this product.
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Reviewed in the United States on December 3, 2025
★★★★★ 5
Excellent sound deadening mats
Style: 80 mil 36 sqft, Style: 80 mil 36 sqft
Purchased these for a 2020 Lexus RX350 due to the hollow sound of the car doors when shutting. They sounded cheap. The mats are super sticky and I applied them when the doors were hot from sitting in the sun. They alubutyl sticks like crazy and the end result was perfect. Now I have solid sounding doors. Good quality product.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Awesome product 👌
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
I love this stuff. I use it alot.
Sticks great
Easy to use
Molds super easy
Really helps with sound. Great product.
I wish I could get sponsored for this product on my projects..
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Good product at a good price
Style: 80 mil 36 sqft
This product works great and easy to install.
I do two or more vehicles a month.
I switch to this brand a year ago and would recommend to everyone of my customers
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Reviewed in the United States on April 16, 2026
★★★★★ 4
Good deal for the price
Style: 80 mil 18 SqFt
The product is good and contrary to some comments I read it was not a mess to install and went on very nicely. That said I placed on a 71 Baracudda and starting from a 71db I was able to drop that down to about 66 with two layers Kilmatt 80mil
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Reviewed in the United States on April 18, 2026