Synergistic Research HFT + FEQ


I heard this tweak at RMAF and brought it home on a 30-day free trial. Unfortunately it turned out to be a real system killer. I had 20 of the HFTs and tried them with and without the FEQ, using a ladder to put them up and take them down repeatedly. I couldn't believe how awful it was. Made it hard to enjoy my otherwise excellent ~$45k system.

I had a similar experience with their Quantum fuse. Never did trust anything with "Quantum" in the title. HiFi Tuning Supreme fuses, on the other hand, made my amps sound significantly better.
128x128augwest
I managed to source for the 1/4" copper cones but have no such luck finding 1/8" copper caps from plumbing suppliers and other hardware stores here in Singapore. Any kind soul here willing to sell me your extras if you have any?
glory,

These plumbing accessories are identical looking to the product Audio Magic sells. I suspect they may be the same -- in which case he has an excellent profit margin, 
sabai,

Is the PARKER 3GF-10 you linked to is of size appropriate for 1/4" (large) Hareline Brass Cone Head?

Have you made your HFT using these elements? What are your impressions?