Small, yet powerful ground control.
What if you could significantly upgrade your audio system without changing any of your components? Simply connect your system to the SR Ground Block and you will hear things you've never heard before. Even the most sophisticated electronics are transformed with a dramatic reduction in noise. Music ushers forth from a jet black sonic background, with never before noticed detail. And modest components take on new refinement to perform far above their class with virtually every area of system performance being enhanced in dramatic and surprising ways. Available for in-home audition, experiment and confirm for yourself that the SR Ground Block is an unprecedented breakthrough that will forever change how you experience music at home.
The SR Grounding Block was engineered to improve ground performance on our new Atmosphere Series Level 2, 3, and 4 interconnects and speaker cables, as well as all SR products with external ground plane connections—like Tranquility Base isolation platforms, FEQ, and Atmosphere wave generators.
With optional connectivity cables the SR Ground Block also dramatically improves the performance of turntables, DAC’s, Pre-Amps, Power Amps, USB devices or any component with an active or passive circuit inside. Sold with a 30-day no-risk money back guarantee, the SR Grounding Block is available for an immediate in-home audition.
Note: Many power amplifiers will sound best without the ground engaged. Try your power amp and speaker cables with and without the ground attached and choose what sounds best for your system.
The term “ground” refers to a connection to the Earth, which acts as a reservoir of charge. The high-speed, SR Grounding Block provides a conductive path for this ground, separate from the normal current-carrying path of your components, which under certain conditions can add up to 10 dB of noise if poorly designed! The ground path with the least resistance is the best path to Earth, and there is no better ground path for your components than the SR Grounding Block.
18 ports to perfection.
By cleaning up your system’s ground connection you hear a noticeable improvement in soundstage height, depth and width thanks to a lower noise floor. Soundstage scale is improved with richer tonal density especially at the edges of your sound field. Image outlines are brought into clearer focus while musicality and overall system refinement are greatly improved.
When using Atmosphere Interconnects and Speaker Cables Levels 2–4, the Grounding Block applies our UEF technology to the directly to the ground path's shields lowering the noise floor and ramping up overall performance.
Synergistic Research Galileo UEF and Atmosphere Cables
Synergistic Research Tranquility Bases
Synergistic Research Atmospheres
Turntables – Standard or Small Spade Connect to Ground Post on Turntable
Phono-stage - Standard or Small Spade Connect to Ground Post
Digital to Analog Converters (DACs) – Connect to spare Digital Input, Output or Chassis Ground
Reel to Reel Tape - Connect to spare Analog Input, Output or Chassis Ground
Pre-Amplifiers – Connect to spare Analog Input, Output or Chassis Ground
Power Amplifiers – Connect to spare Analog Input, Output or Chassis Ground. Note: Many power amplifiers will sound best without the ground engaged. Try your power amp and speaker cables with and without the ground attached and choose what sounds best for your system.
USB Devices – Connect to spare USB Input, Output or Chassis Ground
Audio Computers - 3.5mm Headphone Jack
Any Component with an active circuit inside – Connect to spare Input, Output or Chassis Ground
Grounding Block Specifications:
- 1 each (10 ft) standard wall ground wire to connect SR Ground Block to the wall
- 4 each (4 ft) standard ground wires: Enough to connect up to 2 pairs of SR Atmosphere or Galileo UEF Series Interconnects or Speaker Cables
- 2 each (8 ft) standard ground wires: Enough to connect 1 pair of SR Atmosphere or Galileo UEF Series Interconnects or Speaker Cables
Available connections for other SR products with SR Ground Plane Technology:
- Synergistic Research Atmosphere: Acoustic Wave Generator
- Synergistic Research FEQ: Frequency Equalizer
- Synergistic Research Tranquility Base Products
Optional High-Def connectivity ground cables are available for the following applications:
- Turntables: Connect to Ground Plug on Turntable
- Digital to Analog Converters (DACs): Connect to spare Digital Input, Output or Chassis Ground
- Pre-Amplifiers: Connect to spare Analog Input, Output or Chassis Ground
- Power Amplifiers: Connect to spare Analog Input, Output or Chassis Ground.
- USB Devices: Connect to spare USB Input, Output or Chassis Ground
- Any Component with an active circuit inside: Connect to spare Input, Output or Chassis Ground
"One of the most significant effect results of reducing the noise floor and signal compression via the SR AGB SE allowed me to listen to music at much lower volumes without any loss of detail, silence between notes, and dynamics. Component changes alone have never resulted in the type of improvement the SR AGB SE brings to the table. With the SR AGB SE installed I was more engaged with the music and not left searching for it. The SR AGB SE is an integral part of my reviewing system. Highly recommended."
- Mike Girardi - StereoTimes - September 2018
"The Synergistic Research passive Grounding Block and Active Ground Block SE have become an indispensable part of our systems. It improves the sound in a way where component and cable swaps just can’t mitigate. If you want to maximize the potential of your system and experience fresh musical highs, we have no hesitation in recommending either of these Synergistic Research grounding blocks."
-Siao Jer - AudioBacon.net - March 2018
"The resulting impact of these three products is more than the sum of the parts. By that, I mean that with these devices it’s more of a “1+1+1 = 5” effect. The noise floor drops significantly, and with that, I feel like I am hearing everything my system was designed to perform. Honestly, I wish these three devices did not matter as much as they do. It’s a new can of worms to unravel and makes system setup a lot more complex. However, I would never go back to an “untreated” system. The new system sounds more dynamic, more detailed, more lifelike in the soundstage and timbre of the various instruments. In short, it sounds more musical, more real."
-Lee Scoggins - Part-time Audiophile - September 2018
"The more I listened to my system with the HDG cables and Grounding Block, the more I was convinced that the addition of these products are on the critical path in assembling a truly high performance audio system."
"you would be hard pressed to find a tweak, at this price point, that gives you better bang for your buck. If there is a better grounding solution available for audiophile systems at this price, I have not encountered it yet! That being the case, it was an easy decision to make it a part of my reference system."
-Malcolm Gomes - Positive Feedback - April 2019
"I was not prepared for the major sonic enhancement that these products delivered. The extent of the positive enhancements goes far beyond merely those of a “system tweak”."
"Synergistic Research has become a market leader of innovative audiophile products."
"The effect on our system was immediately obvious: A thin layer of hash that had been below my notice (Ain't it always the way?) was removed, clarifying a system that I already thought was exceptional."
"It certainly made a difference in our test room, making the system seem more organic sounding, more focused, with a bigger soundstage, and a significant reduction in low level hash."
with Galileo UEF Tuning Modules ($1995 MSRP)
with Galileo UEF Tuning Modules ($3495 MSRP)