GPA-400 : Great power amp which packs a punch!

I bought this as my 15W valve head wasn't loud enough in a full band situation. I use it to boost the volume considerably and be heard in any situation.

The unit feels nice and solid, with incredibly reactive tone shaping controls on the front. I've not used it in stereo, just bridge mono, but it's loud loud LOUD!

I've used it in cramped practice rooms, and on stage, either with a valve pre-amp or a valve head with an internal load through a few different 2x12 and 4x12 cabs and it's fantastic!

It's nice and compact and even stays cool. The noise floor is very low, and despite the instruction manual warning against possible EMI, I've found that even with a valve pre-amp directly on top of the unit, it doesn't cause any extraneous noise.

I'd suggest this as a go to product for either making a valve amp (making sure it's safely loaded and attenuated if necessary) louder, or for amplifying a modelling set up. It really packs a whollop!

Not to mention the price compared to other alternatives... Superb value for money!