Synergistic Research HFT's


I acquired a ten-pack of SR's HFT room treatments and installed them according to directions just prior to last night's listening session. Easy to install using the blue-tack type of material that was included in the package. 

http://highend-electronics.com/products/sr-hft-high-frequency-transformer

The listening room already sported two pairs of Shataki  Holograms ... one pair in the front corners of the room and a second pair in the rear corners of the room. In addition to the Holograms, there are tube traps along the rear of the listening position. I thought I had my room problems solved with the existing treatments and I was satisfied with those results.

Enter the SR HFT's ...

I had my friend Robert over last night to help evaluate the changes, if any. I was looking forward to maybe a small improvement at best. I mean, what can one expect from little metal devises that stick to your walls ... little devises so small that one wouldn't even notice them unless they were called attention to?

Long story short ... we were hit over the head with astounding disbelief at the ... I don't want to use the word "improvement," because that would be an understatement. I'll use the word trans-formative instead.  Because, that's exactly what this tweak has done; its transformed my listening environment, and consequently my entire system, into an unbelievable music machine. 

The first CD I played was a private recording of Rachmaninoff's third piano concerto, with the L.A. Philharmonic orchestra during a Rachmaninoff piano competition. The disc features the winner of the contest on piano.  This has always been one of the favorite recordings in my collection. It transports the listener into the venue in a very natural way. This CD was burned right from the master tape with no artificial reverb or compression.   A good test for any changes to the system. 

Uhhh .... what I thought was a great recording transported us into the live event. Astounding to say the least.  How can such a simple tweak as ten little dots spread around the room have such a huge effect?  My theory is ... the sound energy coming from the speakers causes certain resonances at certain frequencies, and those resonances  excite certain areas of the room and smears the sound. The HFT's take those resonances out of the equation. That's my  theory, anyway. 

Here's the noted improvements:

1. A much more solid presentation at higher volume levels. Everything just seems to hang together better. 

2. Bass control: The best bass from my system yet. Very defined. The lower registers of the piano are a delight. 

3. Size of the presentation:  What I thought was a big sound stage before has been expanded in a very focused way.

4. Transparency: I can "see" much further into the presentation now. The audience noises,coughs & sneezes, the orchestra tuning up, the members turning the pages of the music, the conductor walking on the platform ... all there where a lot of it wasn't before. 

5.  Musicality: The correct tones of the instruments, which I've paid particular attention to in the system, were much improved. Strings, timpani's and the presence of the piano were all dead-nutz on. Amazing. 

6. 3-D:  A much more holographic presentation.  Good Lord, how much better can this get? So much more "air" around the performers. It really adds to the suspension of disbelief in a big way.

I could go on and on with our positive impressions last night, but I will echo what Robert said:  "This is your greatest tweak ever!"  "It sounds like you've improved your entire system." 

After playing a number of CD's featuring piano, we switched to the analog rig and played a whole variety of music ... from straight ahead jazz to Hawaiian music.  The expansion of the sound space, and the realism from analog and tubes with the new room treatment? Unbelievable. 

The ten pack of HFT's gets you to "level two" ... one more pack of five would get it to "level three."  Based upon last  nights results, there is another five pack in my near future. 

Are any of you other A'goners using SR HFT's in your room?  If so, please post your results here. I'd like to know if your experiences with these devises are similar to mine. 

Happy listening, guys. 
128x128oregonpapa
Has anyone tried using circuit breakers on apartment or home circuit breakers?  I just did and was pleasantly surprised, so I am checking on others' experiences.  I tried two grey ones there and liked what I heard. 

Also, has anyone found that one can use too much blu-tac when affixing an HFT or ECT to some surface?  I am beginning to wonder whether HFTs should also be placed directly on the surface that produces bad resonance?  And perhaps one should use the least amount of blu-tac as it might make sense for the back of the HFT to make contact with it.  Or does the HFT work by absorbing resonating waves from the air through its open, concave side as opposed to its flat rear flat side?   Does anyone have any knowledge or experience of this?  I have certainly found that ECTs are most effective when placed directly on the noisiest computer chips rather than just near them on a computer or DAC PCB.  I just started today to remove some of the generous amounts of blu-tac that I have on the back of some of my HFTs, so I guess I should know eventually if it makes a difference.  But perhaps there someone knows something about how HFTs work or has some ideas?

Thanks.

Sorry , in my first sentence, I meant has anyone tried using HFTs on circuit breakers?
Yes ECT"s and HFT's will effect the sound when placed on a circuit breaker or on the Black wire (hot wire) exiting the circuit breaker.
Two to perhaps 5 inside a breaker box can have a nice effect.
After deciding where I want my devices placed I switch from blu- tac to a drop of super glue to affix  the devices. They effect is amplified .
Have fun and experiment with location!

David Pritchard
Thank you David, I will try more HFTs in the circuit box.  

The trouble with using superglue for me is that I rent and will move eventually.  So I should perhaps try some removable glue.


Buy the permanent glue dots. That's what SR uses and you can still remove them.

ozzy