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Welcome to Seismic Bars by Townshend Audio

Elevate your audio experience with Townshend Audio’s Seismic Isolation Bars, expertly designed to decouple your speakers or subwoofers from disruptive floor vibrations. Crafted with precision, each bar features a robust steel cross-piece and advanced Seismic Load Cells™, allowing your speakers to “float” at frequencies above 3Hz for unparalleled sound clarity. Experience wider soundstages, deeper bass, and reduced distortion, all while minimizing noise transmission to keep your neighbors happy. Easy to install and available in multiple weight capacities, Seismic Bars transform your listening environment, delivering music as it was meant to be heard. Discover the Seismic Effect today
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Sizing up

The weight of your speakers is crucial in determining the right load cells for perfect isolation within the audio waveband. Our carefully calibrated Loadcells ensure the ideal spring-mass load, allowing your speakers to “float” and achieve comprehensive isolation from external vibrations. Once this balance is achieved, you’ll select a platform that fits your speakers as shown in the diagram. If there is a slight overhang at the front or back, this may be acceptable. For speakers that don’t fit any standard platforms, we offer a bespoke service to create a custom stand that perfectly suits your setup.

Choose your Loadcell strength from the cart below

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What our customers says about us?

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The Ear
The EarJason Kennedy
ownshend Seismic Speaker Bars produce a result that goes way beyond what you might expect from ‘speakers on springs’. To get an improvement in absolute resolution, precision of timing and solidity of stereo image from something so apparently simple is extraordinary. These things really do change the game, move the goalposts, and revolutionise the way we should think about speaker support. This is not an accessory… it’s an essential
Hi-Fi+
Hi-Fi+Jason Kennedy
have recently been trying Seismic Speaker Bars under PMC fact.8 speakers and have been shocked at the benefits that they accrue. The noise floor drops dramatically and the speakers ‘disappear’ from the soundstage. Close your eyes and it’s hard to point at them because the image is so strong, it’s so three dimensional and convincing that it seems unrelated to the position of the speakers. Equally impressive is the way that overhang is reduced and timing precision increased.”
HiFi Pig
HiFi PigDaniel Worth
he Seismic Speaker Bars gave a relaxed and controlled top end that flows with more ease and more confidence, whilst retaining the air and transparency I’ve worked so hard to achieve… The lack of injection into the structure of the room and the surrounding building was most noticeable here and less interaction with the framework of the structure equals less interaction back into the speakers.
Customer Review, MCRU
Customer Review, MCRU
Main Stream - Master Class Dynamic Parallel AC Line Conditioner
Main Stream - Master Class Dynamic Parallel AC Line Conditioner - Image 2
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Main Stream – Master Class Dynamic Parallel AC Line Conditioner

£324.00

Master Class Dynamic Parallel AC Line Conditioner (MainStream)
Eliminate AC mains noise with MainStream, a parallel line conditioner designed for high-end audio and video systems. Plug it near your gear to filter interference from appliances and RF sources—no current restriction, just cleaner power. Enjoy reduced hum, hiss, and video distortion with its tuned, multi-band filters. Housed in sleek aluminum with a blue glow, it’s lab-proven, affordable, and built to last. Perfect for any setup—add multiple for larger systems. Elevate your experience today!
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Description

Master Class Dynamic Parallel AC Line Conditioner (MainStream)
Elevate your high-end audio or video system with MainStream, a cutting-edge parallel AC line conditioner designed to banish interference from your home’s power lines. Everyday appliances—refrigerators, air conditioners, washers, dryers—and even external sources flood your AC mains with disruptive RF noise and energy pulses. MainStream tackles this head-on, delivering cleaner power to your components without ever restricting current flow.
Unlike traditional “series” conditioners, MainStream works in parallel—simply plug it into the mains socket nearest your equipment. It filters out interference across multiple frequency bands using a streamlined topology with minimal, high-quality components. No current passes through it, so there’s no limit to how many you can use—perfect for large systems. Say goodbye to hum, hiss, buzzing, or vibrations in your speakers, turntables, or chassis, and banish fuzzy images or moving bars from video displays.
MainStream’s tuned reactive filters target noise known to degrade audio and video performance, reducing system background noise to near-silent levels. Encased in a sleek, milled aluminum housing with a subtle blue glow to signal operation, it’s built for a lifetime of reliable service. Laboratory-proven via Fast Fourier Transform graphs, MainStream offers premium performance at a reasonable price—no resonant transformers, just pure interference elimination.
Key Features:
  • Reduces AC mains noise across multiple frequency bands
  • Enhances audio clarity and video quality
  • Parallel design: no current restriction, scalable for any system
  • Durable milled aluminium case with blue operational glow
  • Affordable, long-lasting, and lab-tested for effectiveness
Transform your listening and viewing experience with MainStream—clean power, made simple.
For global compatibility, each Main Stream  includes a high-quality British Standard 3-pin adapter. Experience cleaner power, enhanced equipment performance, and peace of mind with Main-Stream™—where disruptive noise meets its match.
V.A.T will be added at the checkout

Additional information

Weight 0.55 kg
Dimensions 10 × 10 × 5 cm

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frequently asked questions

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

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Unlock a world of pure, unadulterated happiness with our products—don’t lose touch with us now, and let us elevate your audio experience to blissful heights

Our Location

7 Bridge Road, East Molesey

Phone Number

0044 (0) 208 979 2155

Email Address

mail@townshendaudio.com

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Auto-Transformer Preamplifiers

Available in five weight capacities (from under 5kg to over 75kg), these steel-crafted bars adapt to any speaker size, ensuring precision sound quality for every audiophile. Easy to install—simply remove spikes and slide a pair under your speakers—the Seismic Isolation Bars transform your audio setup with dramatic improvements in resolution and musicality. Trusted by hi-fi enthusiasts worldwide, they’re a must-have for anyone serious about pristine sound.
Boost your hi-fi performance today with Townshend Audio’s Seismic Isolation Bars—shop now and hear the difference vibration-free listening makes!
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Audio Cables

Immerse yourself in sonic truth with Townshend Audio’s Fractal Speaker Cables and Interconnects, engineered for ultimate transparency.
Featuring proprietary Fractal™-treated copper, these cables banish distortion and unveil a captivating, lifelike soundstage that redefines audio fidelity.
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Seismic Podium

Elevate your audio with the Townshend Podium and Seismic Range, where cutting-edge isolation banishes vibrations down to 3Hz.
These engineering marvels deliver a pristine, immersive soundstage, freeing your music from the distortions of the floor beneath.
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Why Choose Isolda Speaker Cables?


Most speaker cables in the audio industry overlook the science of transmission line theory, resulting in micro-reflections that smear and veil the purity of sound. These reflections bounce between the source and speaker, muddying the music you love. The Isolda DCT Speaker Cable eliminates this issue through its unique geometry, closely matching the impedance of your amplifier and speakers. The result? A crystal-clear soundstage, lifelike 3d imaging, and seismic bass that transforms your listening experience.

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Engineered for Audiophile Perfection

Crafted by hand in small batches, Townshend Isolda cables feature closely spaced, insulated flat copper conductors encased in a polyester braid sheath. This design makes them virtually immune to Radio Frequency Interference (RFI), ensuring a silent background that lets every note shine. Whether you’re listening to intricate classical compositions or powerful rock anthems, the Isolda delivers sound so natural, it feels like the artist is in the room.

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Flexible and Consistent Performance

Unlike other cables, Isolda DCT Speaker Cables perform flawlessly even in unequal lengths. Thanks to their advanced impedance-matching technology, the sound from each speaker remains identical, regardless of cable length. This flexibility makes them ideal for any audio setup, from compact home systems to sprawling high-end rigs.

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Pure, Uncolored Sound

 

The Isolda DCT’s impedance-matched design (8 ohms) eliminates signal reflections, delivering music exactly as recorded. The Ear praises it as “one of the best speaker cables money can buy” for its neutral, fatigue-free sound.
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Seismic Bass Power

Closely spaced EDCT copper ribbons produce deep, articulate bass with unrivaled solidity. townshendcable.com highlights “bass with a power that is truly seismic,” making every low note punchy and precise.
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Stunning 3D Imaging

he cable’s low-inductance geometry creates a holographic soundstage, placing instruments with pinpoint accuracy. 6 Moons notes it “can convey a huge and realistic soundstage,” immersing you in the music.

 

 

 
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Silent Backgrounds

 

Virtually immune to RFI due to its flat, closely spaced conductors, the Isolda DCT ensures pitch-black backgrounds.
 
With genuinely silent backgrounds,” letting subtle details shine.“
 
 
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Perfect Impedance Matching

With an 8-ohm impedance matching typical speakers, the Isolda DCT prevents distortion from mismatched cables. townshendcable.com explains this preserves square waves, ensuring “no ringing or distortion.”
 
 
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Unequal Lengths, Same Sound

Unlike other cables, Isolda DCT Speaker Cables perform flawlessly even in unequal lengths. Thanks to their advanced impedance-matching technology, the sound from each speaker remains identical, regardless of cable length. This flexibility makes them ideal for any audio setup, from compact home systems to sprawling high-end rigs.

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Explosive, Precise Dynamics

 

EDCT-treated conductors deliver lightning-fast transients and vast dynamics for thrilling playback. From soft whispers to orchestral peaks, every note snaps with energy, as HiFi Pig praises its “bass clarity and space.” townshendcable.com emphasizes high-current handling, ideal for dynamic genres like rock or classical. The Isolda DCT brings music to life with unmatched precision and power.
 
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Natural, Fatigue-Free Sound

We’ve engineered the Isolda DCT for a relaxed, natural sound, free from harshness or edge. Impedance matching and RFI immunity ensure effortless music flow, perfect for vocals or acoustics, and one astute audiophile’s tale of his relief from “Alice-in-Wonderland” cable woes. Enjoy hours of fatigue-free listening with emotional depth and clarity.
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Unleash Your Music’s True Potential

Unlike other cables, Isolda DCT Speaker Cables perform flawlessly even in unequal lengths. Thanks to their advanced impedance-matching technology, the sound from each speaker remains identical, regardless of cable length. This flexibility makes them ideal for any audio setup, from compact home systems to sprawling high-end rigs.

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Unleash Your Music’s True Potential

 The Townshend Isolda DCT Speaker Cable is your key to audiophile bliss.

 Transform your hi-fi into a sonic masterpiece. Don’t just listen—experience music with seismic power, stunning clarity, and soul-stirring emotion today.

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