Audio Visual Accessories

A high-fidelity home theater or professional workstation requires premium audio visual accessories. Whether you need a 4K HDMI audio extractor to route sound to your soundbar, a Bluetooth 5.3 transmitter for wireless listening, or legacy RCA to HDMI converters for retro gaming, we have the exact hardware. Backed by 20 years of AV retail experience, Sun Cheong Computer (新昌電腦) provides ready-stock availability in Sham Shui Po and expert component matching to ensure your audio and video sync perfectly without signal loss.

AV Connectivity & Conversion Specifications Guide

Routing high-resolution video and lossless audio requires matching the correct digital protocols and interfaces. Here is a technical breakdown of our core AV accessories:

Product Category Key Technical Specifications Best Use Case
HDMI Audio Extractors 4K@60Hz, HDMI to SPDIF (Optical) / RCA, ARC Support Extracting audio from a PS5 or Apple TV to an older amplifier or soundbar.
Bluetooth Audio Adapters Bluetooth 5.3, 2-in-1 TX/RX, aptX Low Latency Adding wireless headphone support to non-Bluetooth TVs or vintage Hi-Fi systems.
Analog to Digital Converters AV (RCA) to HDMI, VGA to HDMI with Audio Connecting retro game consoles (e.g., PS2, Wii) or old PCs to modern smart TVs.
Professional Audio Cabling Toslink Optical cables, Gold-plated Banana Plugs Interference-free digital audio transmission and secure speaker wire termination.

Important Note (Hardware Limitations & Upscaling Reality): When using an AV (RCA) to HDMI converter, please understand that it cannot magically upgrade a blurry 480i analog signal into crisp 4K quality. It simply stretches the standard definition image to fit your modern screen. Furthermore, if you want to extract audio from your Smart TV's built-in apps (like Netflix or YouTube) to an external soundbar, your TV's HDMI port and the Audio Extractor must both support ARC (Audio Return Channel). A standard extractor without ARC will only extract audio from external devices plugged into it, not from the TV itself.

Frequently Asked Questions (FAQ)

Q: I connected my soundbar using an HDMI Audio Extractor, but there is no sound. Why?
A: The most common reason is an incompatible audio format. Most basic audio extractors and older soundbars can only decode 2-channel PCM audio. If your TV or PS5 is set to output Dolby Digital, DTS, or Bitstream, the extractor cannot process it, resulting in silence. Go into your TV or console's audio settings and change the output format to "PCM" or "Stereo."

Q: Why is there a lip-sync delay when watching movies with my Bluetooth transmitter?
A: Audio delay occurs when the transmitter and your headphones use the basic SBC Bluetooth codec, which has a latency of 150-250 milliseconds. While fine for music, this causes noticeable audio-visual desync in movies. To eliminate this, both your transmitter and headphones must support low-latency codecs like aptX Low Latency (aptX-LL).