Tube Amp Noise with Klipsch Cornwall II

Get the Quicksilver Horn Mono amps. No noise, no fuss and they sound great on high efficiency speakers.

Hi, I also own the Cornwall II's, and can definitely state that they are not the problem. Tube amps work wonderfully with them, even the flea-wattage ones. I would suggest that the brightness you don't like is probably coming from the Rogue amp - the Rogue amps are perhaps the brightest tube amps I have ever heard. This is partly because they are relatively high in wattage. I use a PrimaLuna amp, which is about half the wattage of alot of the Rogue stuff, and it has a much warmer sound. I would suggest that you try a lower-wattage amp than the Rogue, and you will probably find the sound you are looking for.

Call Rogue and find out which small tubes are in the gain stage, this would affect the hiss in the speakers the most. Then do as TVAD & Rodman99999 suggested and call either upscale audio, Brent Jesse, Jim McShane or Vintage tube services and get Phono grade tubes. Any brand of tube will lower your hiss in your speakers as long as they are low noise phono grade.