Active Ground Block
The heart of your system.
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Peripheral HUB
44 ports to perfection.

Synergistic Research Cables
Shields engaged.
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Now with inlcuded fuse upgrade
UEF Blue Fuse
The Blues never sounded so good.
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An included upgrade on the Active Ground Block SE model, the SR Black Fuses encompass our latest understanding of passive Quantum Inductive Coupling and are our most powerful fuses to date. In addition to a proprietary conditioning process followed by a 1,000,000 volt signal we call Quantum Tunneling that alters conductive pathways within the specially developed burn wire, we add a Quantum Inductive Surface that includes Graphene to stabilize the electrical wave feeding your system for a dramatic improvement in system performance over standard and audio-grade fuse

Review
"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
Review
"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
Review
"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
Review
"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."
Review
"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
Review
"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”."
Review
"Synergistic Research has become a market leader of innovative audiophile products."
Review
"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."
Review
"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."
Active Ground Block Specifications:
US 120V MSRP –$1,995.00
Bundled with $499.00 UEF Black 10 gauge AC Cable
INTL 230V MSRP –$2,295.00
Bundled with $499.00 UEF Black 10 gauge AC Cable
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- Construction: Aircraft Aluminum
- Dimensions: Height 3″ x Width 10.75″ x Depth 6″
- Weight: 5.5 lbs.
- Internal Active UEF
- Connector Input: 1 each 15 amp IEC
- 99.995% Pure Silver Ground Strap: 52 square centimeters
- SR Quantum Capacitor
- Point-to-point wiring
- Silver Solder 4%
- Hand Built Time: 2.5 hours
- Quantum Tunneling: Standard Level 2
- 5 Day Burn In: 2 Step Process
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Voltage and current Rating:
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- Input rating US: 15amp/125v
- Input Rating International (EU/AU/UK): 16amp/250v
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Connector Input :
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- 44 each 2mm ground ports
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UEF:
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- Graphene treatment throughout unit
- 2nd generation Internal ULF (Ultra-low frequency) Generator to bias AC to the Earth’s Schumann Resonance for a dramatic drop in a system’s noise floor
- 1 each SR Power Transformers
- 1 each SR Quantum Capacitor in ULF field generator
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Connector Input:
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- 1 each 15 amp IEC
- 1 each On/Off switch
- 1 each SR Black 1.6A Fuse
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99.995% Pure Silver
- 52 square centimeters
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
UEF Black 10awg power cable
Pure. Clean. Power.

UEF Black PowerCell power cable specifications:
3 each 10 awg. SR Copper:
- Dielectric: (EPDM) Ethylene Propylene
- Connector Input US: 1 each Synergistic Research C07 Pure Copper
- Connector Input Int’l:1 each Synergistic Research C07 Pure Copper
- Connector Output US: Synergistic Research C07 Pure Copper IEC 20 amp connectors
- Connector Output Int’l:Synergistic Research C07 Pure Copper IEC 20 amp connectors
Build Notes:
- UEF: UEF Technology Standard Level 2 - UEF coating with Graphene is applied to connectors and cabling significantly reducing the noise floor and allowing a purer signal to transfer with less grain providing more warmth and detail. The conductors also benefit from dampening effect that UEF provides.
- Quantum Tunneling: Quantum Tunneling: Connections and cabling are treated with 1,000,000 volts of electricity at specific frequencies and pulse modulations, creating a canal in the conductor material and contact points at the molecular level that allows electrons to flow more freely.
- 5 day Burn-in: 2 step process
- Hand crafted in our California factory
Voltage and current Rating:
- US: 30amp/125v
- (EU/AU/UK): 20amp/250v

INTL 240v—$2,195
INTL 240v—$3,295
with Galileo UEF Tuning Modules ($1995 MSRP)
INTL 240v—$7,995
with Galileo UEF Tuning Modules ($3495 MSRP)