Power Rating

Fig 5
Even though the ground water pump can only pump 250 liter/seconds, the train can still be filled up with say 1000
liters/second, as long as the train does not arrive too often.
Similarly, a power supply with the right peak reservoir will be capable of feeding an amplifier with sufficient power as
long as the power requirements are matched to the signal source being amplified.
On the power amp side of things, we chose an amp capable of 450 watts (20ms burst @1kHz)
(fig. 6).
Fig. 6
This Audio Precision measurement shows a 1kHz sinus burst (20 ms) that have a peak value of 60V, corresponding to
42.42Vrms  450W in 4 Ohm
However, as mentioned in the ‘Solid state amp’ section, designs like these have inherent
challenges when it comes to their maximum performance handling, in particular when being
concerned about how it sounds.
To meet this challenge we therefore decided to combine our PSU and Amp solution with what we
call ‘Active Power Management’.
Active Power Management™
Active Power Management™ is inspired by the nature and response of tube amps and is in
essence an adaptive part of the amp that actively reacts to the source signal.
Active Power Management™ is controlling an integrated circuit that kicks in when the amp gets
close to its maximum performance and starts to compress and limit the peaks of the bass signal
as well as pulling up the smaller signals similar to the way a tube amp would perform.