tube noise please help


I have Supratek Cortese (tube preamp) running a pair of mono block Krell (FPB- 250). The noise from the preamp was terible ( even with the cheater plug for preamp and remove the bypass cap inside the amp ( as Krell recommented for tube)). thanks for any advices.
ass: cd: Mark levinson 37 and 360s
speaker : B&W 802'S Nautilus
conditioner: Richard gray 400s
wire: interconnect: audience 24, spkeaker: van del hul(revelation)
winsound

Showing 1 response by szutinglee

1. try unplugging other equipment to see if the noise is from caused by something else.
2. try different tubes.
3. check if the screws on transformer(s) are loose.
4. tighten all cable connections.
5. try tube dampers (Herbies Audio Lab) as last resort.
best of luck!
scott