I have been listening to the ST-1000 for over a year and have logged over 500 hours. These amps are the bees knees. They are superior to any power SS amp I have ever heard in bass extension ans control, transparency, and sweetness of the midrange and treble. As for dynamics, they blow the doors off any SS I have ever heard; just unrestrained power with absolutely no trace of strain, congestion or grain. For the money, these amps are a screaming bargain.
People amaze me when they obsess about these tiny differences in sound between amps. In it's operating range, unstressed, the ST-1000 sounds similar enough to my Sumo, Classe and B&K amps that I doubt that I could distinguish between them in blind tests. However, I am sure that on recordings that tax the amp (concert volume full orchestral and organ recordings) I could distinguish between the ST-1000 and the SS amps - the difference is at the power margins and that is the difference between good reproduction and superlative reproduction that approaches the absolute sound.
People amaze me when they obsess about these tiny differences in sound between amps. In it's operating range, unstressed, the ST-1000 sounds similar enough to my Sumo, Classe and B&K amps that I doubt that I could distinguish between them in blind tests. However, I am sure that on recordings that tax the amp (concert volume full orchestral and organ recordings) I could distinguish between the ST-1000 and the SS amps - the difference is at the power margins and that is the difference between good reproduction and superlative reproduction that approaches the absolute sound.