GPA-400 : Simple amp, easy to use and very loud!

The GPA-400 has everything you need from a power amp, especially if you carry it around a lot. At only 3kg, it is so light that it makes travelling to gigs super easy.

There are two channels, each with two speaker connections (jack plugs), so simple and straight forward. The resonance and presence are effectively tone controls, similar to bass and upper mid - I know electronics experts will cringe about this description, but that's pretty much how they work. They can be quite handy for balancing up the tone of slightly different speaker boxes.

There is a push-button mute switch on the front, signal indicators and red clipping LEDs. I never got these to light up, because it is so devastatingly loud, I was frankly too scared.

The sound is clean, really really clean and the high frequencies can be a little bit shrill, but this can be mostly accommodated by EQ in the pre-amp.

So to summarise, a cheap, sturdily built, very light, tremendously loud power amp. It will not sound like an over-driven valve power stage (which will weigh ten times as much), but it will accurately reproduce anything your amp modelling effects unit delivers to it.

For the price, this is an excellent buy.