I am considering purchasing a Kenwood TS 590. From reviews of users I see conflicting reports about low ssb output and or lack of audio punch.
Plenty of users seem to be griping about the power out meter only showing 60-70W max on SSB. Several hams have demonstrated, using true peak-reading power meters, that 100-110W out is the true
PEP reading across the HF ham bands for this rig on SSB. Other modes (FM, AM, and CW) will read the same whether measuring average or peak (PEP) power. There are at least a couple videos on YouTube accurately demonstrating this.
My view is that the meters on other rigs are of the usual "average power" type, but are compensated
(that is, read 'average power' at about 40% higher) on SSB in order to read "correctly." The less likely reason is that all other rigs' meters (except the TS-590S's) are of the considerably more complex and expensive "peak power" (PEP) type.
But as long as you understand that this as a "quirk" and not a failing or flaw in the transceiver, you can dismiss any personal concerns and those other hams' SSB output gripes.
I believe that the chief challenge of this rig is getting your audio output quality optimized. There is such a strong subjective aspect to this, as well as the tremendous flexibility offered by this transmitter, that only time and experience and some on-air help from other honest and experienced hams can ultimately match your voice and microphone to the proper on-air conditions. My, how my TS-520S and TS-440S were SOOO
simple in this regard!