The Supratek preamps are pretty light. Therefore isolation with the usual spikes can be pretty difficult, not to mention the tube microphonics and noise you can experience with a light chassis preamp and a pair of old 6SN7's sitting on a hard surface.
What *I* did was buy three black diamond cones with threaded studs. I removed the copper bottom plate and then I drilled three holes - evenly spaced - & bolted on the studs.
I purchased resonance control material called "dynamat" and covered the inside of the copper bottom plate with it. I also added dynamat to various accessible areas on the inside of the preamp. This stuff limits resonance and helps a great deal when fighting tube harmonics.
With all the dynamat inside the preamp, I'd swear it added 10 pounds or so - but I'd be lucky if it was 2 pounds :)
I sit my Supratek (w/black diamond cones) on a rubber thing I purchased at home depot. I found this rubber thing in the plumbing department. I think it is used to make gaskets for pipes or something. It comes in a 12 x 12 size and fits nicely underneath the Supratek and is virtually invisible. This seems to further decrease resonance and drops the microphonics down even further.
The Supratek works fine with inexpensive power cords. I wouldn't go out of my way to put an Electraglide FatMan on it as the best results seem to come from ordinary cords. I am currently using a Bybee MkII power cord with good results. The Bybee seems to quiet things down a bit without making the preamp sound sterile (like with an Elecraglide) or adding colorations - actually I think its a perfect cord for the Supratek.
You might also try something like the Absolute Power Cord which doesn't "do" much - or Mark Bucksath (the outstanding Ultimate Audio reviewer who got the first glimpse of the Supratek) seems to have had good results with a Discovery power cord.
What *I* did was buy three black diamond cones with threaded studs. I removed the copper bottom plate and then I drilled three holes - evenly spaced - & bolted on the studs.
I purchased resonance control material called "dynamat" and covered the inside of the copper bottom plate with it. I also added dynamat to various accessible areas on the inside of the preamp. This stuff limits resonance and helps a great deal when fighting tube harmonics.
With all the dynamat inside the preamp, I'd swear it added 10 pounds or so - but I'd be lucky if it was 2 pounds :)
I sit my Supratek (w/black diamond cones) on a rubber thing I purchased at home depot. I found this rubber thing in the plumbing department. I think it is used to make gaskets for pipes or something. It comes in a 12 x 12 size and fits nicely underneath the Supratek and is virtually invisible. This seems to further decrease resonance and drops the microphonics down even further.
The Supratek works fine with inexpensive power cords. I wouldn't go out of my way to put an Electraglide FatMan on it as the best results seem to come from ordinary cords. I am currently using a Bybee MkII power cord with good results. The Bybee seems to quiet things down a bit without making the preamp sound sterile (like with an Elecraglide) or adding colorations - actually I think its a perfect cord for the Supratek.
You might also try something like the Absolute Power Cord which doesn't "do" much - or Mark Bucksath (the outstanding Ultimate Audio reviewer who got the first glimpse of the Supratek) seems to have had good results with a Discovery power cord.