Instruction: Answer the given question using the supporting document.

Input:
Question: I am interested in this product for the optical output, but I am wondering if the optical output on this device supports 5.1 or 7.1 surround?
Document: in order for the Toslink to analog converter to work -- but this is simply a result of my overall setup, not a deficiency of the Kinivo. I did determine that the Kinivo will pass 5.1 surround sound off the HDM onto the optical if you wanted to hook up to a soundbar or AVR, though.
I purchased this unit to allow an older projection TV that only supports DVI input with L/R analog audio (pre-HDMI days) to connect up via HDMI to a comcast set top box, apple tv, new DVD player, and Xbox 360. I paired the optical output of the Kinivo to a monoprice TOSLINK to L/R analog converter.
I was trying to extend the capabilities of an old but perfectly working amplifier i had lying around. It had no hdmi ports but plenty of optical inputs and with this little device, i was able to split the audio into the amplifier and the video to a television i had.The hdmi port also transmits audio, so you can still hear audio without using the optical link.
First off let me start with the positives. It's really great that this has an Optical output. Why? I purchased a DLP TV when they first broke and HDMI was not out yet so I use the optical to supply my home theatre since DVI does not carry audio.
I got this because it is cheaper then the non-optical SPDIF @$53. Works for me. Able to see same output on 2 TVs , also able to see different output on 2 TVs. Connect to my cables box, PC, Apple TV and minix pro x7. Hope it will last.
I put a few pieces of velcro on it to secure it.2) In getting the unit setup I first tried it on a full HDMI TV. On the &#34;A&#34; side, there doesn't seem to be a way to enable the audio to remain on the HDMI cable versus getting dropped onto the optical output.
The power is a typical power brick. I have no need for the "two outputs can display different sources from different inputs simultaneously" feature so I didn't test that, other than that the unit works as described.As for my rating I would give it 5 but I consider 5 to be perfect and this unit is not. The price is a bit steep overall considering its function relative to the units it switches and it is not without some minor flaws.
There is no power button on the remote so you have to press the button on the switch to turn it off. -1 starOutput A stopped working right after the return period, so now I'm stuck with a unit that only half works. -3 stars
Once that's done then go ahead and set up the output you want to record - your tv will go blank while you're doing this, but it will come back. If you're not getting the audio, switch devices as I mentioned earlier. Once you've got your recording underway you can relax and watch something else. BUT -- don't switch sources until your recording is finished or you're going to have a gap.
I just tried out this switch today after ordering from Amazon/Blue Rigger.I was unable to get audio out either HDMI output to my TV. (Sharp LED 52700UN from 2009.) The TV showed an error message stating the audio signal was incompatible. It wasn't a complete bust, my old Onkyo receiver SR-804, recognized the signal and played back the audio.I didn't have luck with the intelligent switching (CEC).
Answer: Dear Customer, Thank you for your question regarding our HS420 HDMI Matrix. The matrix does support 5.1 and 7.1 surround sound through the optical output. Please contact us at support@kinivo.com if you have any additional questions or need assistance. Thank you,Kinivo Product SupportEmail : support@kinivo.comLive chat : http://support.kinivo.com | Mon-Fri: 9AM - 5PM PST