My Krell KSA250 amps were recently serviced by Krell in the last year. The amps never hummmmed or hissssed but I did notice one amp was much hotter than the other. So I had sent both amps to Krell to check. It was time to replace caps and since the amps were sent back to me everything is perfect.
Sound with only one KSA250 on my B&W 800 speakers was good but not quite delivering the soundstage and presentation. Now that I biamp superb improvements with soundstage and better definition. Also recently upgraded power cables on the Krell amps which put them into 5th gear and worth the imvestment. Hope this helps you out. I am chilling listening to some Bach with my awesome reference stereo system.
Sound with only one KSA250 on my B&W 800 speakers was good but not quite delivering the soundstage and presentation. Now that I biamp superb improvements with soundstage and better definition. Also recently upgraded power cables on the Krell amps which put them into 5th gear and worth the imvestment. Hope this helps you out. I am chilling listening to some Bach with my awesome reference stereo system.