Synergistic ResearchFEQ - Frequency EqualizerSynergistic Research FEQ - Frequency Equalizer Most Wanted Component 2014 AwardThis device, placed in the listening room makes a dramatic improvement to the sound. The FEQ (Frequency Equalizer) is an active device, available in 120V (with US plug) and 240V (with Schuko plug)....995.00

Synergistic Research FEQ - Frequency Equalizer Most Wanted Component 2014 Award

Listing ID: lis88c14 Classified 
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Synergistic Research FEQ - Frequency Equalizer
FEQ - Frequency Equalizer placement
FEQ - Frequency Equalizer placement
Most Wanted Component 2014 Award
Risk free 60-day Money Back Guarantee
Time Left: 10 Days


Asking Price: $995.00

New Retail Price: $995.00

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Ships fromApple Valley, CA, 92307
Ships toWorldwide
Package dimensions14.0" × 8.0" × 8.0" (5.0 lbs.)
Shipping carriersUSPS or UPS
Shipping costFree
Original accessoriesBox
Agon miniAverage Research Pricing

This device, placed in the listening room makes a dramatic improvement to the sound. The FEQ (Frequency Equalizer) is an active device, available in 120V (with US plug) and 240V (with Schuko plug). We offer a risk free 60-days Money Back Guarantee.

6 months financing available - no payments, no interest for 6 months! 

Place the FEQ (7 x 4.5 x 4.5 inches in size) behind your stereo or home cinema system, approximately the middle of the room close to the wall, or between your main speakers, plug it in, turn it on and let it do its magic.

The effect of Synergistic’s HFT (High Frequency Transducers) will be multiplied with the use of the FEQ (Frequency Equalizer).


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Michael Fremer, Stereophile, Feb. 2015:
"...after listening, I pulled the FEQ's plug and listened again. Damned if the stage didn't narrow somewhat, and lose a bit of the vivacious depth and retrieval of ambiance I'd heard with the FEQ plugged in. It just sounded more spacious, and especially more transparent, with the FEQ plugged in. So I plugged it in again..."

Michael Girardi, The StereoTimes, Dec. 2014:
"...the largest component in one’s system is the listening room yet it the one component that is commonly overlooked and misunderstood. The HFTs are tiny high frequency transducers that clean up high frequency harmonics in your listening room by cancelling the harmonic noise generated by room resonances. The FEQ is an ultra low frequency RF pulse generator that acts as a low frequency dither to overpower the ambient RFI and EMI fields. The combination of the FEQ and HFTs has made the biggest improvement in my system’s performance since I been reviewing high end audio components over the last 11 years. Considering the physical size of the HFTs and FEQ as compared to all other room acoustic enhancement devices and their comparative performance, the FEQ and HFT resides in the best in class category for room acoustic treatment. From an ergonomic and aesthetic standpoint alone they are revolutionary in the application of room acoustic enhancement. Happy was the day I removed my previous reference room acoustic treatments and replaced them with the FEQ and HFT's (and it wasn’t a secret that my family felt the same way). The combination of the FEQ and HFT is a paradigm shift in room treatment device design and delivers on its promised performance..."

Steve Plaskin, Stereophile’s, Oct. 2013:
"...I have never heard anything that was as effective in elevating the performance of a high end system as the combination of the Synergistic Research HFT and the FEQ... soundstage, noise floor, bass detail and dynamic power, midrange and high end clarity all improve with the use of these products... the Synergistic Research High Frequency Transducer and Frequency Equalizer will become a permanent part of my audio system. Removing these components is simply unthinkable given the quality of the sonic enhancement achieved with their use..." Check out the entire review

Customer Feedback:

"...I had no idea how imbalanced my listening room was until I plugged this bad boy in! Words cannot describe how linear my system now is. Bass definition is unreal, instrument separation is very life live, and voices are scary real, with amazing focus and sound staging! Very very happy with these and the HFTS!!!"

" FEQ and 3 packs of HFTs completely transformed my room creating the listening experience I’ve been looking for a very long time. While a lot of upgrading of components and wire over the years improved the quality of sound, the HFTs and FEQ have created a realistic 3 dimensional soundstage, with more inner detailed revealed and a profound overall improvement in listening enjoyment..."

"...picked up 3 HFT 5 pacs (15 HFTs) and an FEQ at Rocky Mountain and just wanted to let you know how wonderful my system now sounds... there’s a Betsy Larkin track playing and it’s as if she’s singing in my living room. The clarity now rivals my headphone rig, no shit. Anyway an amazing product that has whetted my appetite for more..."

"...they [FEQ & HFT] really souped up my system dramatically there was no accessory that I bought ever made this level of improvement..."

Big improvement for your system and your listening room!

- Actively enhances system performance and room acoustics
- Lends weight and definition to low frequencies
- Dramatically improves high frequency air and refinement
- Improves mid-range palpability
- Significantly expands soundstage layering
- Multiplies the benefits of HFTs in system and room
- Like a Tranquility Base for your listening room
- Unconditional no-risk 30-day money back guarantee
- Available for 120V and 240V
- $995 international retail price

As a business we have to collect 8% TAX from buyers in California.

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Return Window

Item can be returned within 30 days of receipt.

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Items must be returned in their original condition, with all included packing materials and no signs of use. Buyer assumes responsibility for all shipping return costs unless the item was not received as described.


Buyer will receive a full refund in the original payment method less any shipping charges.

Seller Information

HighEnd Electronics  Verified Dealer

Last 12 months

Member since December 2004