This little power supply features five 9v outputs for effect pedals, which is about enough for home practice if you, like me, get your tone mostly from the amplifier. This leaves enough room for something like a tuner, a boost or tubescreamer and 3 modulation pedals. The outputs are isolated so there's very little (if any) electrical interference.
The unit is very compact but satisfyingly heavy for its size and seems very well built. It also doesn't get too hot, even after a couple hours of use.
I would definitely recommend this power supply for rehearsing and playing at home, or even performing live if you use no more than 5 pedals (like many metal guitarists do!). I think this is possibly the *only* reliable, isolated power supply at this price range.
Edit: Just wanted to add this unit is more versatile than one might think. Using the daisychain connector it can power up to 5 pedals from a single output if together they don't exceed 120 mA, which happens to be just enough for a tuner, wah, tubescreamer, big muff and analog delay. Digital pedals use more power and are on separate outputs. I'm powering 7 pedals and still have a couple outputs available. Again, great little isolated PSU for a small home/practice setup.