This thing is actually really nice. Metal knob, and seemingly metal bottom. Pretty sturdy, lays flat on the desk and has little rubber soles on the bottom to keep it from slipping. Light only comes on when it’s in use, and works right out the box(Windows 11).

This does exactly what it says. A very simple plug and play model. Windows immediately recognizes that it adjusts the system volume. I didn't have to do anything special. I like that it has 4 small rubber pads underneath, so it stays on the desk where I put it, and doesn't slide around, and the USB cable is plenty long enough to reach across the desk. It also has the option of a nice cool blue glow which makes it look great, and the knob has multiple functions like quick/slower effect on the volume, mute, and a couple of others. Perfect for what I needed.

Worked right out of the box to adjust volume, and was super easy to configure as a fun mouse alternative using the notepad-based interface. I was very impressed by the clever firmware wizard! I recommend my settings:1 Clockwise : Mouse Wheel- (scrolls down)2 Counterclockwise : Mouse Wheel+3 Press : Mouse Click4 Press+Counterclockwise: Ctrl+Tab5 Press+Counterclockwise : Shift+Ctrl+Tab6 Long Press : EscThe rubber feet and general heft of the knob keep it stationary on the desk even when scrolling through multiple rotations. The metal feels smooth to the touch, and there is very slight concentric grooving on the face so that you can comfortably and consistently spin the knob. For immediate response, the stippling on the rim provides a firm grip for a partial rotation with a two-finger pinch.I'll have to follow up in a few months to describe its durability, as I can feel the knob wobbling a little bit, but so far I am loving it.

Excellent accessory. I reprogrammed it as a mouse wheel. This makes it an alternative to the mouse for scrolling through long web pages, and for tuning my software defined radio (SDR). The instructions for reprogramming are available in the product description, but hard to find. Here they are, copied from another review.1. Start with knob unplugged2. Open Notepad, or another text editor, or MS-Word. Notepad may be too slow and lead to dropped characters.3. Press knob down and hold4. Plug knob in.5. TURN KNOB (I had to turn the knob, or nothing happened)6. Notepad will display text and options7. Use the knob to move up and down through the menu, and push to select.8. You don't need a modifier, unless you are using a combination of keys like [ctrl.]+[x]9. Options include keyboard keys, mouse functions, and others.10. Save

Works great, plug and play with Windows 11, and controls Spotify on windows. Needed a controller to skip tracks on Spotify for windows and this worked perfectly right out of the box. Would have given it 5 stars but the knob is slightly lopsided/tilted (see picture). Price for quality is worth it and blue light is a neat touch.

iOS, Android, PC, Mac.....plug and play. Built of metal, a very quality product.

Worked like a charm. Just quite expensive.

After reading a review that someone used this knob with SDR i decided to get one, Been using the Flex Knob with Thetis but its a bit wonky to get going, this is so much simpler, it doesnt have ALL the advanced features the Flex knob has but its dead simple to set up.There are no instructions per say in the package , watch the video on the amazon site on how to set up before you decide what is best for you,It probably has over 150 fucntions/shortcuts and numbers that can be programmed. Thanks to the comment from a customer that left feed back , it made me look closer as to what it can actually do.

While the overall unit is solid, the actual knob & software is rather poor.Plastic knob cheap.

Very good worth the money

Update on July 19, 2018 - 3+ months later: I use this usb control knob everyday and it works great in adjusting sound running via my PC. I work with video editing with 3 monitors and also watch lots of YouTube videos. Every one of them varies in sound levels, so this knob allows fast changes in volume levels without hunting for the mouse to adjust controls on the PC or use a remote. If I get a call, rather than hunt for the mouse, just one swift tap shuts off existing PC sound to hear the phone. It would be nice if it was wireless, so I don't have to deal with the rather short cord. They need to provide a longer cord or make it wireless or have that as an extra cost option. The weight of the device is heavy enough to keep it fairly stable and not slide around. They should also provide some means to attach it to the side or under a desk, but hook and loop fastener tape would probably work also. Now if they could add a USB controlled second button to stop and start YouTube videos, that would be even better.Here is my original post:I just got this today, Apr. 6, 2018 and it is GREAT. Before, when playing YouTube music, or Amazon movies, or Plex TV recordings via an over the air capture device like HDHomerun, the volumes put out to my external speakers varied by source. Sometimes I had to adjust both the Windows 10 volume AND the YouTube volume or when I used headphones, they have to be turned way up using the Win 10 slider. That is inconvenient because I work in an enclosed porch where you can still rain and if heavy I have to switch to headphones, which is a pain. This adjusts them all. Now I don't have to use the mouse or cursor to adjust volume, but just this knob. It takes more turning to adjust volume when left as is, but if you press the knob and turn, the volume is adjusted much faster. And, if you just press and release the knob, it switches between on and mute. WONDERFUL. I have tried a couple cheaper kludgy devices, and almost bought an entire new speaker system with a remote knob, but this does what I want. The price is kinda steep for just an apparent rotating knob, but most others on the market are all in the same range. I ordered a different one fulfilled by Amazon, and for the first time ever, USPS lost it, so Amazon let me cancel it because they had no replacement.Here is what I tested so far:- YouTube video music - adjusted sound like described above.- Switched to a TV show recorded on a Plex Server, and it could not be heard. By turning the knob in fast mode, it immediately ramped up the sound to the level I wanted.- Switched to live OTA TV over HD Homerun and it was really loud... used fast mode and turned it down very quickly.- Switched to an MP4 video I recorded last night, and it was about the same at the OTA level, but it could be adjusted.- Tried to plug in my headphones, but the system is a custom build with ASUS motherboard and it wants to use onboard audio which is apparently a different source. I have to figure that out before I come back to explain how it works with headphones. Audio signal differences are a black art and very confusing to this user. The black base measures about 3" x 3.25" x 2.25" high (with knob). I have it sitting on a LARGE mouse pad so it doesn't slide around. There is no need for a picture since it looks just like the ones in the description.If I encounter issues later, I will return and update it.VJ in Florida Apr. 6, 2018