"A basic remote control operates on the principle of line of sight, meaning if your remote control can “see” the component it will work properly. Once electronics are hidden behind wood doors, that line of sight is interrupted and the remote controls no longer work – unless we add a simple, yet clever device, the infrared repeater.
The job of the infrared repeater (IR Repeater) is straight forward: repeat your remote commands to the hidden electronics so they work properly. You enjoy the concealed look of hidden electronics with full remote control functionality. "
When should I use wired IR Repeater Kit, and when should I use the wireless IR repeater kit?
Does your IR Repeater kit compatible with AT&T, Foxtel and CANAL cable TV system
Wired IR Repeater : some of them can works with cable TV system
Wireless IR Repeater : YES
There are bounch of wireless IR repeater kits in the current market, why yours?
Trouble shooting for A-1369/A-1382：Wirelwess IR repeater
What's the advantage for using Bluetooth audio receiver?
Can upgrade your existing stereo system to becomes a wireless stereo system
add on value for your exixting stereo system
What's the advantage for using Bluetooth audio receiver with power amplifier?
User can install themselves easily, just connected the speaker wires, and tide it up
Why you put a DC jack in front of the wallplate , and put two power wire (red and black) in back of the wallplate?
DC jack in front of the wallplate/ faceplate: easy for end-user to connect the power wires themselves
Two power wire in back of the wallplate: easy for installer to connect the power wires in the wall
How can I make sure I can play the music from the exactly the speaker which I want to (Let's say there are 10 Bluetooth audio receivers have been turn on)?
There are a lot of ways to solve this common problem. But the quick and easiest way is to assign Unique ID and unique password for each device (Bluetooth Audio Receiver, or Bluetooth audio receiver with built-in power amplifier)
Can I have my unique ID and password for my bluetooth Audio Receiver?
Yes, but there is a MOQ request, which is 300pcs.
What's the purpose for pre-amplifer?
The job of a preamplifier is to turn a low-voltage, high-impedance signal susceptible to signal degradation, into a higher-voltage, low-impedance signal. This process is often referred to as adding gain, and preamplifier specifications often refer to how much gain the preamp provides without introducing audible noise. The output of the preamplifier can then be safely sent along to a power amplifier that will raise the current to levels that can drive speakers.
In the case, a phonograph does not actually contain a signal at the correct frequency response for playback systems. They are recorded differently to reduce audible artifacts. This means that you must have a phono preamp somewhere in your signal chain in order to play back a vinyl record. This is a special type of preamp that applies RIAA equalization
It's quite interesteing for your "2-Microphone mixer to AUX preamplifier", but where to use?
Karaoke, Education, Church
For "RIAA Phono pre-amplifre", why there is a volume control there? Any specifc purpose?
Usually, the pre-amplifier is more closer to the user; the audio power amplifier is close to speaker. So the convinient way for the user to adjust the volume is to control the volume either on audio source, or on the pre-amplifier
How do I know your "RIAA phono pre-amplifier" follow the RIAA standard?
You can test your product and compare with the follwing RIAA equolization curve.
RIAA equalization curve for playback of vinyl records. The recording curve performs the inverse function, reducing low frequencies and boosting high frequencies.
Do your "RIAA phono pre-amplifier products" for (moving magnet) mm type of phono cartridge? Or (moving coil)mc type of phono cartridge?
For ours is for mm type, and the impedance is 50Kohm
◆Audio Power Amplifier：
For your Audio Power amplifier, what's the advantage for "class D"?
Please refer the following comparing table
In your products, what's the difference between " mic level" and "line level"?
For "Stereo audio to Digital audio converter", what's the application?
Converts an analog audio output (from any standard line level source) into a digital audio signal for connection to a commercial amplifier or distribution system. Both coaxial and optical (Toslink) input connections are provided.
For "Digital audio to Stereo audio converter", what's the application?
Converts a digital audio output (from a DVD player, set top box etc) into a standard stereo line level signal for connection to a stereo or commercial amplifier system. Both coaxial and optical (Toslink) input connections are provided, plus a coaxial ‘loop out’ connection. The internal low noise digital to analog converter ensures no signal degradation. Standard stereo RCA output. Includes power supply.
For "Dual Output Digital Audio Converter", what's the application?
S/PDIF digital audio is today’s standard for home theater surround sound. However there are two distinct formats (Coaxial and TOSLINK), and your a/v components may feature dissimilar connection types. This is a great little gadget for those who need to convert optical to coaxial or coaxial to optical or even input a single optical or coaxial and get both outputs working simultaneously.
What's the purpose for "HDMI VGA + Audio Converter"? Application please.
HDMI to VGA + Audio Converter is designed to enable the connection between the latest HDMI digital devices such as Home Theater PC, HD/Blu-Ray DVD Player and Gaming Console and the analog display units. It converts digital HDMI signal to analog VGA and stereo audio.
Everything talking about HDMI, so where does VGA products apply for?
VGA is more relevant than DVI is. you are more likely to find monitors/TVs in the future that have VGA than DVI
The main reason, is that schools, universities, and meeting rooms in businesses were all wired with VGA to the projectors.
What's the features for VGA, HDMI and DVI?
Please refer the following table from HP web-site
What's the special for your "USB2.0 Over CAT5 Extender with 4 port Hub"
Extend four USB 2.0 or USB 1.1 devices up to 164 feet (50 meters) over Cat5, Cat5e or Cat6 Ethernet cable
USB 2.0 High Speed (480Mbps), backwards compatible with USB 1.1 Full Speed (12Mbps)
Built-in hub to connect up to 4 USB 2.0 or USB 1.1 devices
Support suspend / resume detection
Plug-n-Play - no driver required