There seems to be something wrong with the power rating from Lab Gruppen. The continuous RMS rating of the amps is 1/3 of their "rated power". Their amps are that way maybe comparable to the bellringer but not to Yamaha, for example. I measured a P2500S I have and it was able to deliver at least the power values stated in their specs continuously. Lab Gruppen doesn't state how they measure the "rated power" but you can easily conclude from their current draw and thermal dissipation specifications that they take the maximal continuous RMS power an amp can deliver and multiply it by 3 to obtain their "rated power". That means for a 8Ohm load:
- FP10000Q = 4x433W < 2x P5000S = 2x2x 500W
- FP6000Q = 4x208W < 2x P2500S = 2x2x 250W
- FP14000 = 2x783W = 112% P7000S (non-EU version) or 2x P3500S bridged
- FP9000 = 2x533W = 106% P5000S
And so on. You have to multiply the full band power specs of the Yamaha PS-series (for example) by 3 to be able to compare it to the Lab Gruppen "rated power". Being in Europe, the only reason to buy a FP6000Q would be the more than halved weight compared to two P2500S and the halved rack space needed. But you save the need for replacing fans since the PS-series is dead quiet. Even the cloned FP6000Q ends up being more expensive than two P2500S in Europe. So, seen from Europe, the only of these cloned amps that might make any sense buying is the FP10000Q which would mean saving like 300€ and 12kg weight and 2U of rack compared to two P5000S. For that you don't have any warranty and a no-name china cloned amp that seems to have thermal issues (it seems to need the two extra fans) and which you maybe wouldn't be able to resale for a good price. If you're planning to use it professionally (as a musician, for example) more problems arise since it doesn't seem to be clear who would be responsible in case of a severe failure of the unit catching fire, for example. I would have to first consult a lawer to know if I'd be making myself responsible for the unit, since I would be the one importing it to Europe. Too much trouble for too less gain, even if you don't have any thoughts about buying a plagiarized product, what actually makes it clearly wrong in the first place. At least in my case it was pure greed that led me to consider buying a stolen engineering work. I'm ashamed that I had to do the math first and not just obeyed my consience from the beginning...
Last edited by always-ultra; 11-23-2014 at 05:06 PM.