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The Daily Insight

What should I look for in an optical cable

Author

Andrew Mitchell

Published Apr 20, 2026

So if you’re getting a Dolby Digital signal, and it’s not cutting out, your optical cable is fine. If you’re transmitting PCM, the audiophile answer is that different optical cables can cause different amounts of jitter. The reality is, the digital-to-analog converter in your gear has vastly more effect on the sound.

Does it matter what optical cable I buy?

So if you’re getting a Dolby Digital signal, and it’s not cutting out, your optical cable is fine. If you’re transmitting PCM, the audiophile answer is that different optical cables can cause different amounts of jitter. The reality is, the digital-to-analog converter in your gear has vastly more effect on the sound.

Are there different qualities of optical cable?

There are different types of optical, but again, other than better build quality, a fibre-optic is the same whatever the price. The main difference is hybrid TOSlink connections, where one end is a 3.5mm headphone plug, and the other end a conventional optical connector, which Apple use for most of their computers.

What kind of optical cable do I need?

To use the digital optical output port on your TV you need a standard digital optical cable. A standard digital optical cable is a fiber optic cable with a TOSLINK connector at both ends.

Which optical fiber cable is best?

1. AmazonBasics Digital Optical Audio Cable. The digital optical audio cable by AmazonBasics is among the best there is in the market. I highly recommend this product to everyone looking for a dependable Toslink cable.

Does optical cable length affect sound quality?

Unless optical S/PDIF is REALLY wierd, not it won’t make a difference. With things like SONET and optical Ethernet any length cable works just as well until you go over the max and attenuation makes your signal not go through.

Do high quality optical cables matter?

Quality of the actual connection matters most. Then it usually is a matter of length. Short length, then a regular run-of-the-mill plastic fibre is ok. For longer cables you want a glass-fibre with quality connectors to get better s/n-ratio.

What is better sound quality HDMI or optical?

The major difference is that HDMI cables can pass higher resolution audio which includes formats found on Blu-ray like Dolby TrueHD and DTS HD Master audio. Fiber optic cables won’t be able to transmit these high-res sound formats. … You will get quality sound only as you get with HDMI cable.

Can optical cable be too long?

According to BICSI (an organization specializing in telecommunications), the longest practical length of an optical cable is limited to 20 feet. Anything longer than that is susceptible to errors due to internal reflections.

Is Toslink the same as optical?

The official term for optical audio cable is “Toslink,” short for Toshiba Link. Developed in the early ’80s to connect their CD players to their receivers, it was a red laser optical version of the Sony/Phillips “Digital Interconnect Format” aka S/PDIF standard. … But now more and more gear are dropping optical.

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What uses mini Toslink?

Mini-TOSLink connectors may be used for either input or output. Headphone/optical out, stereo line/optical out or in, and microphone/optical in are common types used on laptop computers.

Do Toslink cables make a difference?

Starting with AudioQuest Carbon coaxial and AudioQuest Vodka Toslink digital cables, the difference was primarily in clarity. That is, the sound was less transparent and softer with the Toslink cable, and soundstage depth was reduced compared with that of the coaxial cable.

Can Dolby Atmos go through optical?

Optical cables don’t carry Atmos, however. Connecting a source like Blu-ray directly to the receiver/soundbar has another benefit: Doly Atmos, Dolby True HD and DTS Master Audio. If you have an older TV these higher-fidelity formats can’t be sent over ARC.

Which cable has highest bandwidth?

Cable TypeSpeedBandwidthFiber optic cable10/100/1000 Mbps, 10/40/100/200 GbpsUp to 4700 MHzTwisted pair cableUp to 10 GbpsUp to 4700 MHzCoaxial cable—750 MHz (default)

Why optical fiber has high bandwidth?

Fiber-optic bandwidth is high both because of the speed with which data can be transmitted and the distance that data can travel without attenuation. Optical fiber transmits data as pulses of light through glass wire, allowing data to travel at nearly the speed of light.

Which optical cable is best for soundbar?

  • AmazonBasics CL3 rated Optical Cable (For In-wall installation) …
  • Monoprice Premium Optical Audio Cable. …
  • FIRBELY Digital Optical cable. …
  • FosPower Toslink Digital Optical Audio Cable (Best Affordable Optical cable) …
  • CableCreation Digital Optical Audio Cable.

What cable gives best sound quality?

If you’re looking for the best audio quality, HDMI is your choice. While an optical cable can still pass surround sound and super high-quality audio, thanks to the added bandwidth in the latest HDMI versions (2.0) you’ll be able to pass higher resolution and audio.

Do more expensive optical cables make a difference?

The honest truth about expensive cables is that they really don’t make much difference to audio and video quality. Also, once you reach a certain price range (anything above $50), you’re only really paying for a brand name.

Do HDMI cables make a difference in sound quality?

An HDMI cable only transmits signals. It doesn’t make the audio and video quality better than your TV or other devices’ capabilities.

How far can you run an optical audio cable?

A: The ADAT spec puts the limit on optical cable length at five meters (around 16 feet). However, the length you can achieve depends greatly on the cables you are using. Inexpensive optical cables lose signal quite rapidly. But good-quality glass cables can be used for much longer runs.

How long should Interconnects be?

The optimum length relationship of inexpensive interconnect and speaker cable is approximately (inter) = 4+0.343(spkr) (in feet). Therefore, in general, inexpensive interconnects should be 1/3 the length of 11AWG ZIP speaker cables or shorter (1/3 rule).

Is HDMI an optical cable?

HDMI and Optical cables cables are two popular choices for transmitting audio from a source, such as a TV, or Blu-ray player, to an external A/V system, or speaker setup. HDMI can transmit both audio and video, while optical transmits audio only.

Does HDMI ARC affect picture quality?

It makes it even easier to connect a home cinema system to the television. Thanks to HDMI ARC, a device can both receive audio signals from a single source and send them back via the same cable. … After 20 meters, you can expect the signal to degrade and the picture and sound quality to greatly diminish.

Is it better to connect Soundbar with HDMI or Optical?

The biggest difference is that HDMI can pass higher-resolution audio, including the formats found on Blu-ray: Dolby TrueHD and DTS HD Master Audio. These formats can’t get transmitted across optical. … So if you want just a single cable between two devices, HDMI is your pick.

Can you use HDMI ARC and optical at the same time?

From box both HDMI and optical can take in same time.

What is Toslink 3.5 mm?

The AudioQuest Forest Toslink to 3.5mm Mini Optical Digital Audio Cable (2.46′) is designed to reduce distortion in your digital audio signal. … This reduces dispersion, jitter timing errors, and the amount of signal loss at the digital-to-conversion stage.

Are Spdif and Toslink the same?

The Toslink cable (SPDIF Digital Optical cable) consists of an optical fiber cable with a SPDIF connector on both ends. Toslink cables support several types of media formats. … Plastic works well with S/PDIF but glass transmits better light for a better sound. The difference may not be clearly heard from your equipment.

Does Mini Toslink work 3.5 mm?

The mini-toslink end is designed for a 3.5mm S/PDIF port. If your MP3 player has the port this cable would work. Your AV receiver digital optical port would fit the toslink end but the mini-toslink requires a S/PDIF compatible 3.5mm port.

How do I use 3.5 mm Toslink?

  1. Plug in your fiber optic Toslink to 3.5 mm cable into your digital audio player (your gaming console, TV, or another digital sound source)
  2. Plug the 3.5 mm end of the cable into the input end of your DAC. …
  3. Plug your headphones or stereo into the output end of the DAC.

What sounds better coaxial or optical?

And, in our experience, compared to optical, a coaxial connection does tend to sound better. That’s because it has greater bandwidth available, meaning it can support higher quality audio up to 24-bit/192kHz. Optical is usually restricted to 96kHz.

What is Toslink jitter?

The problem with TosLink is that it is S/PDIF, which inherently adds jitter. The faster the rise time of the data link, the less jitter gets added. TosLink is pretty slow and the rise times are slow enough that it can barely handle the data rates for S/PDIF. So there is more jitter added than with a coaxial cable.