FAQ's
HDMI - Q. What are the dimensions of the Performance Optical Ultra High Speed termination?
Answer: Please find attached photo's showing the precise dimensions of the Performance Optical Ultra High Speed termination.
HDMI - Q. Is QED Optical Ultra High Speed guaranteed to work with 4K gaming/TV to the longest 20M length?
Answer: We had all the latest optical HDMI cables tested and approved at an authorised test centre and they have been awarded the official Ultra High Speed holographic logo. This means that all the lengths up to and including 20 m are guaranteed to ...
HDMI - Q. Is my 'Premium' with Ethernet HDMI cable compatible with eARC?
Answer: This from the CEDIA white paper on HDMI 2.1 connectivity. As QED Premium is a “with Ethernet” cable it will be capable of transmitting eARC: “It was noted in Section 5 that HEAC is a standard rather than optional feature in Category 3 cables, ...
ETHERNET - Q. Is my Performance Graphite ethernet cable directional?
Answer No, the cables are non directional.
Reference Digital Audio 40 - Q. What is the minimum bending radius of this cable?
Answer: The minimum bend radius is 25 mm. The characteristic impedance the cable depends entirely on the geometry and if this is distorted then a localised impedance mismatch will cause reflections and increased jitter in the digital signal; the ...
HDMI - Q. I have a QED QUNEX HDMI-P, is it compatible with ARC on my equipment?
Answer: Yes, the old 1.3 standard HDMI-P cables all had pin 14 for audio return channel (ARC) connected so, unofficially they should work OK with 1.4b ARC.
Reference Digital XLR 40 - Q. What happens to the signal which is outside of the audio band?
Answer: The ferrite jacket has the effect of attenuating external noise signals of 10 MHz and above that might reach the audio signal. It would also attenuate radiation from the cable above those frequencies from affecting other parts of the audio ...
Q. What is the outer diameter of my digital interconnect jacket?
Answer: Please find the jacket outer diameters for QED digital interconnects as follows:
Q. Are digital coax cables capable of hi res audio?
Answer: Ordinary 75 ohm coaxial cable has been used for years as TV aerial cable with frequencies in the UHF band 470 MHz and beyond so 24/384 at 18 Mb/s would be no problem for a cable like this. However with digital coaxial outputs, like all such ...
Q. Which USB cable is capable of hi res audio?
Answer: If your amplifier can achieve higher bit rate audio with the USB Audio Input (for example, accepting up to 32bit/384kHz & DSD 256 digital files from Mac or PC), then you would need the QED Reference USB cable.
Reference Digital Audio 40 - Q. What is special about the QED Reference Digital Audio 40 plugs?
Answer: The Reference Digital Audio 40 is made using a cable with a very tight 75 ohm characteristic impedance, however the standard RCA plugs (which have to be used because the domestic S/PDIF connector uses them), are not designed to be 75 ohm. ...
Q: Which QED optical cable is best for hi-res audio?
Answer: When speaking of hi-res audio, the actual bit rate of 32-bit 192kHz is 12.28 Mb/s. QED's Performance Optical Graphite is a good cable, and will cope with this data rate, but for a jitter free presentation of audio signals this fast, you need ...
Performance Optical - Q. What are the sizes of the plugs on your Toslink to Mini Toslink cable?
Answer: We can confirm that the Toslink end is 12.5mm and the mini Toslink end is 10.5mm.
HDMI - Q. What are the outer jacket diameters of the QED HDMI cables?
Answer: Profile eFlex HDMI - 5mm OD Performance Premium HDMI - 6mm OD Performance Active HDMI (black) - 7mm OD Performance Active HDMI (grey) - 8.5mm OD
Q. What is QED Bandpass Filter Technology?
To learn about Bandpass Filter Technology and get a better understanding of what it can do, please click here.
Q. Are QED HDMI cables 2.0 compatible?
Answer: All current QED HDMI cables are already compatible with the HDMI 2.0 standard and carry the "High Speed with Ethernet" logo and 3D/4K logos. For more information, please click here.