Hello ALL -
Having owned a Powerhead now for about 5 months, I thought to give an honest personal opinion of the Kempers' built in 600 watt amplifier section.
Having A/B the Kemper with numerous Tube amplifiers I find that using the Powerhead falls way short in comparison to a TUBE amplifiers power output
For my tests, the very same cabinet was used in all trials; a 212 Orange PPC212 with two Celestion 8 ohm Redbacks wired in series for a 16 ohm impedence.
16 ohm impedance gives the Kemper internal amplifier a 300 watt output rating.
A FEW Personal examples: 1. Marshall JTM45 Offset rated at 45 watts output blows away the Kemper powerhead in volume and sheer power.
2. Vox AC30 rated at 30 watts output blows away the Kemper powerhead in volume and sheer power.
3. MP CS-40 rating up to 75 watts output depending on the output tubes used. I tried with KT66's. Result: blows away the Kemper
powerhead in volume and sheer power.
CONCLUSION: Tube amplifier technology literally obliviates any amplifier output section based on Solid State technology - like the Class D amplifier in the Kemper.
Kempers' 300 watts at 16 ohms - well, you go ahead and try it for yourself.
The "measley" 30 watts of an AC30 tube amplifier will BLOW AWAY the Kempers 300 watt amplifier rated at 10 times more power!
Don't get me completely wrong here, I still really like and use my Kemper Powerhead for a lot of obvious other reasons.