I use the Harley Benton GPA-100 to raise the level of the signal of my guitar. The chain that I currently use is guitar-> modeler -> eq -> amp(Harley Benton GPA 100) -> cabinet.
As a result, it works very good, is not over heat, delivers the signal with no noise, is well built, feels pretty solid, the meters and lights are very clear, can deliver 100w in 8ohms, which is good enough for live situations, and is transportable, you can carry it in a backpack without problems.
At the time I had this equipment, I had 0 problems at this date, after rehearsal, live performance, and recordings. is very reliable.
I think the only defect I had was the EQ section that is included. It sounds so generic that it has no soul (I know it's a budget amp, but if they change that part of this device, like including an EQ section with similar bandwidths to Marshall or Fender, this would definitely be the holy grail for amplify a modeled signal)
If you want to use this as an amp EQ after your modeled tone, you'll end up sounding like generic/cliché... so make sure your tone/shaping is completely ready before using this equipment, or make sure you have enough room in your preset to add an equalizer to the end of your modeled chain instead of using the EQ section of the Harley Benton GPA100.
After that is a really good piece of gear for the price that it cost.