UPDATE: After testing out a few more karaoke machines, and giving this one a longer try, I'm updating my review of this to add back more stars.This is definitely the luxury brand of karaoke machine. The speaker sounds great, it provides a lot of connectivity options, and the microphones sound excellent. I also really like that the microphones charge while set inside their slots in the box.The built in tablet is what sets this apart from most other machines. You can run the Karafun app directly on this machine without needing to use another device like an iPad. That makes it truly an all in one solution.There is an HDMI output so you can connect a TV and the lyrics from the Karafun app will show up on the screen. However, this is the feature that prevents this from being a 5 star review. For whatever reason, when an external screen is connected, the performance of the tablet absolutely tanks. The animations on the lyrics get super choppy, and the touch screen lags a lot. This was the cause of most of my frustrations from my first review after using it only for a few minutes. I realized later that I had been testing it entirely with an external screen connected. As soon as I unplugged the external screen, the performance improves again and it's great. So sadly it's not the best way to get the lyrics onto a large TV screen.The workaround for the HDMI output is to run Karafun on an iPad or computer, and connect via bluetooth to this machine. Then you can run the HDMI out from your iPad/computer to a TV and everything is happy.It is nice that the machine has a bluetooth mode so you can always fall back to not using the built in software on the tablet if you want.I just wish they had used a slightly more powerful CPU for this, and one that could also handle HDMI out well!-------------ORIGINAL REVIEW BELOWSo this thing is definitely fun, and sounds great and is nice and loud, but I was not super impressed with the touch screen.First, the good parts. The microphones sound good, and they charge and store in the box, which is super convenient. Getting this running took no time at all, just turn it on and choose which app you want to use (I used KaraFun) and go! The HDMI output is also great in case you want to put the lyrics up on a larger TV.But, it turns out there are some major downsides to bundling the screen with this.The screen is basically a built in Android tablet. They've done a good job of covering up all the Android-ness so you barely notice it. That's how it runs the Karafun app which was one of the reasons I got this in the first place.I tried a few songs in Karafun, worked fine, then started a download of the top 500 songs. After the download was finished, the app was running super slowly. Some of the buttons on the box were unresponsive. Finally I got the Android notice "Karafun isn't responding / Close app / wait" popup, but even that was unresponsive. I also had one time where the little side menu just disappeared completely and I had to restart the device to get it to come back.I tried running KaraFun on my iPad and connected via Bluetooth to the amp and it worked a ton better.