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
I've got a set of the Galileo UEFs speaker cables coming in Friday, luckily ex-demo so broken in -- hopefully a simple switch up from my existing Galileo LEs, and got them at a very good price ...
I have around 70 hours on the blue duplex outlet now.
Sound is somewhat muddled a bit of reverb and a bit of dullness. It's difficult to find the best words to describe, lacks focus?
The depth of soundstage is clearly deeper as is the hight and width. In fact the depth is deeper at the outer fringes almost like a slight surround sound effect.
Four or five hours on the black. The Oppo power supply is connected to the black.
I'm sure those Galileo LE's will be amazing Folkfreak.
I'm currently using (2)  5 packs of HFTs and a FEQ. Happy with the way they positively affect my system.
Although I appreciate @oregonpapa 's passion, I'd tone down the positive effects somewhat.

I think the fact that these items are so physically small vs. their positive effects, may (affect) one's normally suave nature in describing items.
Still cooking the Blue outlet but for those that are interested in the difference between the Galileo LE and newer UEF it's an interesting comparison

Firstly they're clearly cut from the same cloth tonally and changing one for the other does not alter the fundamental tonal balance. I'd also recommend that you definitely use the grounding connection as without it the noise floor is noticeably higher. I have the full active ground block and made up a connection using the stock SR wire -- upgrading to the HD links or a custom pair from Verastarr will no doubt be a nice tick up.

Once grounded and with the gold bullets (I've yet to try the silver) the UEF has noticeably less pronounced bass than the LE but more detail and a major step change in clarity and information retrieval in the upper mids and highs. This is especially apparent in the clarity around breathing and vibrato on vocal and in the more high pitched percussion. The drop in perceived bass is something I've found often happens on my analog rig when I improve things, at first it seems you're missing something but then you realize that a bass hump has been smoothed over and all the detail and extension is still there but now in better proportion to the rest of the frequency range.

Overall the gestalt of the UEF is more natural and open, greater information retrieval but with no edge or harshness. In fact with the UEF some vocals that had been shrill became more natural and even toned.

The main benefit of the UEF is a much lower noise floor -- it seems the old cliche of hearing into the recording holds true in spades with this one and you may find yourselves turning the volume up a notch or too (it tends to be the case that it is low level distortion that limits where you place the volume control -- more of this tends to make the same absolute level seem louder)

So if you're system can handle natural bass and doesn't need the bit of bass bump the LE provides I'd say the switch to UEF is a no brainer