Synergistic Research HFT - Five packs, Original models

HFT transducers

I am selling Synergistic Research HFTs in groups of 5. Each group of 5 HFTs is $168 which includes PayPal fees and shipping to the continental United States, Alaska, Hawaii, or Puerto Rico.
I have a total of 15 HFTs for Sale. If you want all 15 HFTs, I will sell 15 for $475.
Also included in each purchase is a supply of Blue Tak to safely attach the HFTs to your walls, speakers, audio furniture, etc.
I do not have the original boxes or directions.

Below is an excerpt from a review.

High Frequency Transducers are very small aluminum cylindrical objects with an inverted cone at their tops. The HFT measures a mere 8 mm in diameter and 8 mm in length. Using a little Blu Tack at the end of the HFT allows it to be attached to a wall, cables, etc. These devices are passive and require no active power supply. Synergistic Research makes a bold statement that the HFT improves all aspects of system performance.

Big improvement for your system and your listening room!
- Tunes acoustics, chassis and speaker cabinet resonances

- Expands soundstage height, width and depth

- Extends and clarifies high frequencies

- Dramatically improves low frequency extension / bass control

- Lowers noise floor for improved inner detail and micro-dynamics
- Significantly improved all aspects of system performance
- Regular price - $299 per 5-pack