What Seismion does

Seismion GmbH designs and manufactures active mechatronic vibration isolation systems for two distinct customer bases: high-precision industrial and laboratory equipment (white-light interferometers, scanning electron microscopes, semiconductor production lines with moving XY-tables, and E-beam lithography systems) and high-end audiophile applications (turntables, tube amplifiers, loudspeakers). The company's core technology centers on an active feedback control system that uses specially developed piezoelectric acceleration sensors, analog control electronics, and contact-less voice coil actuators to implement the sky-hook damper principle across all six degrees of freedom. Seismion claims 7-37x better isolation performance than state-of-the-art air spring systems in the critical 1-10 Hz frequency range, with sub-Hertz isolation starting below 1 Hz, settling times in fractions of a second, and VC-F/VC-G level performance meeting semiconductor lithography standards. The product portfolio comprises the Reactio family (original, Plus, and 2), the modular Atlas system for heavy industrial loads (100-1,000 kg per unit), and Reactio Beams, alongside partner-branded products such as the Thorens New Reference turntable and the Helmut Thiele ADB01 active damping base.

The company operates a direct-inquiry hardware sales model with non-publicly-disclosed pricing, distributing through a global network of 12+ regional channel partners across EMEA, APAC, North America, and LATAM, supplemented by direct sales from Hannover headquarters. Seismion reaches customers through technical blog content, YouTube and Instagram channels (both launched September 2024), and event-driven GTM via the High-End Munich audiophile trade show (three consecutive years: 2023-2025) and the German Physical Society Spring Meeting. The company is privately held by its two co-founders, Dr. Marcus Neubauer (Managing Director) and Sebastian Mojrzisch (Managing Director), with no external institutional investment disclosed. Founded in 2021 in Hannover, Germany, Seismion operates with 1-10 employees and sells exclusively to enterprise buyers in its two target segments.

Name

Seismion

Legal name

Seismion GmbH

Website

https://seismion.com

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

1–10 employees

Short description

Seismion GmbH designs and manufactures active mechatronic vibration isolation systems using piezoelectric sensors and voice coil actuators, serving industrial metrology, semiconductor production, and high-end audiophile customers globally. Founded 2021 in Hannover, Germany.

Ownership category

akta.pro rank

Product category

Precision Vibration Isolation Systems

NAICS

Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Electronic Coils, Transformers & Other Inductors (3677)

akta.pro primary industry

Vibration Control & Anti-Vibration Products (Mounts, Bushings, Isolators) (IMANALAD)

Keywords

• Active vibration isolation
• Piezoelectric control systems
• Precision mechatronics manufacturing
• Optical measurement equipment
• High-end audio isolators

Headquarters

HQ city

Hannoversch Münden

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Supply Chain, Marketing or Sales, Operations

Revenue model

1. Active Vibration Isolator Sales: Sale of active vibration isolator products including Reactio 2, Reactio Plus, Atlas, and Reactio beams systems to industrial and audiophile customers.

Go-to-market motion2 records

Distribution channels12 records

Marketing channels6 records

Core offering

Seismion designs and manufactures active vibration isolators that use piezoelectric acceleration sensors, analog control electronics, and contact-less voice coil actuators to implement the sky-hook damper principle across all six degrees of freedom. The product portfolio includes the Reactio series (Reactio, Reactio Plus, Reactio 2) for table-top applications and the Atlas modular system for heavy industrial loads, serving high-precision measurement, semiconductor production, and high-end audiophile markets.

Product overview

Seismion is a vibration technology company offering active vibration isolators for industrial and high-end audio applications. The product portfolio centers on active isolators that use piezoelectric sensors, analog control systems, and voice coil actuators to provide vibration isolation and stabilization across six degrees of freedom. The Reactio product line (Reactio original, Reactio Plus, and Reactio 2) serves as the core portable table-top platform, while Atlas provides a modular system for heavy industrial loads (100-1,000 kg per unit), and Reactio Beams offers beam-based configurations. Collaboration products include the Thorens New Reference turntable and Thiele ADB01 active damping base. Accessories include metallic footers and audio racks. The company positions its active isolators as superior to passive air spring systems, achieving 7-37x better isolation in the critical 1-10 Hz frequency range.

Differentiator

Problem solved

Functional benefit

Brands

• Reactio 2: Professional active vibration isolator for high-end audio and industrial use, featuring sub-Hertz isolation performance, automatic leveling, and locking functionality.
• Reactio Plus
• Atlas
• Reactio Beams

Products and services

• Reactio 2 Professional portable active vibration isolator with sub-Hertz isolation performance starting below 1 Hz. Features automatic leveling with 25 µm repeatability, push-button locking functionality, differential measurement technology for reduced interference susceptibility, and 2x better noise performance than its predecessor. Designed for high-end audio, industrial metrology, and semiconductor production applications.
• Reactio Plus Active vibration isolator offering approximately three times higher isolation performance than the original Reactio. Low-frequency isolation starts at -10 dB reduction at 1 Hz. Available in 500x400 mm and 600x500 mm dimensions with payload range of 0-120 kg.
• Reactio (original) Original active vibration isolator featuring piezoelectric acceleration sensors, analog control circuitry, and voice coil actuators for vibration isolation across six degrees of freedom. Awarded the Diamond Award by AudioKeyReviews. Dimensions and payload ranges vary by configuration.
• Atlas Modular active isolation system consisting of compact feet units (240x240x110 mm each) arranged in groups of 4, 6, or more to meet payload requirements. Each unit handles 100-1,000 kg load, with systems configurable up to several tons. A 'dynamic' version is available for applications with moving XY-stages requiring fast settling time.
• Reactio Beams Isolation system consisting of two beams arranged at variable distances to meet required sizes. Available in two configurations: 0-350 kg and 0-700 kg load capacity. Compatible with various breadboards with or without mounting holes (M6/25). Size per beam: 636x120x110 mm.
• Thiele ADB01 Active damping base designed by Helmut Thiele featuring Seismion's active isolation technology. World-renowned turntable and tonearm designer Helmut Thiele incorporated Seismion's proven active damping technology into his own active damping base design.
• Thorens New Reference Turntable developed in cooperation between Thorens and Seismion, featuring Seismion's active isolation technology built inside the turntable as a core element. First shown as prototype, later as final production product at High-End Munich.

Quantifiable outcome

• 7 to 37 times higher isolation performance than air spring systems, especially in the critical 1-10 Hz frequency range
• +5 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Helmut ThielecoreStrategic or Co-development Partner · 1 April 2024Helmut Thiele, worldwide acknowledged for his turntables and 'zero-tracking error' tonearm, designed the active damping base ADB01 featuring Seismion's well-proven active damping technology from the Reactio.
• ThorenscoreStrategic or Co-development Partner · 1 January 2023Cooperation with Thorens on the New Reference turntable, which features Seismion's active isolation technology built inside as a core element. The turntable was showcased at High-End Munich 2024 and 2025.
• darTZeelminorGTM or Marketing PartnerSeismion was co-exhibitor at darTZeel booth at High-End Munich 2024. darTZeel's NHB 468 power amplifiers were placed on Seismion Reactio Plus isolators.
• AbsolareminorGTM or Marketing PartnerAbsolare featured Seismion vibration isolators in their room at High-End Munich 2024.
• Sigma AcousticsminorGTM or Marketing PartnerSigma Acoustics used Seismion vibration isolators in their room at High-End Munich 2024.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Bilz Vibration Technology: German specialist in vibration isolation, leveling elements, and machine mounts serving industrial OEMs and precision equipment users. Closely comparable on geography (Germany), product category, and end-customers.
• Standa: Lithuanian manufacturer of optical tables, vibration isolation platforms, and precision positioning equipment. Competes in the same industrial laboratory isolation segment across European and global channels.
• Technical Manufacturing Corporation (TMC): US-based pioneer of active and pneumatic vibration isolation systems (Gimbal Piston, Stacis). Directly comparable as an active-isolation competitor serving semiconductor metrology, optics, and high-end instrumentation customers globally.
• Harmonic Resolution Systems (HRS): Premium audio isolation racks, bases, and platforms for high-end audiophile systems. Comparable to Seismion's audiophile Reactio line in product category, price tier, and target customer profile.
• Minus K Technology: Manufacturer of passive negative-stiffness vibration isolation platforms used in microscopy, interferometry, and precision measurement. Competes in the same precision-industrial segment with a complementary passive approach to the same isolation problem Seismion addresses actively.
• Symposium Acoustics: US-based manufacturer of high-end audio isolation platforms, racks, and footers for audiophile and professional audio customers. Directly competes with Seismion's Reactio line in the high-end audio vibration isolation niche.
• Kinetic Systems: Long-established US manufacturer of vibration isolation tables and platforms (Vibraplane) for laboratory and metrology customers. Directly competes in the same precision-instrument isolation market as Seismion's Reactio and Atlas lines.

Broad incumbents

• Thorlabs: Global photonics and optical-equipment vendor offering optical tables and isolation platforms alongside a deep catalog of lasers, optics, and motion control. Overlaps with Seismion on the industrial isolation use case but as one product line within a much broader portfolio.
• Newport Corporation (MKS Instruments): Broad-line supplier of optical tables, vibration isolation, motion control, and photonics instrumentation. Competes with Seismion in laboratory/semiconductor vibration isolation as part of a much wider portfolio.

Regional players

• HWL Scientific Instruments: German supplier of vibration isolation systems and optical tables for research and industrial metrology. Closely comparable on geography (Germany) and target customers, with overlapping active and passive isolation offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCZeIdsUllJHGNLr_B6H5cKQ
• Instagraminstagram.com/seismion_gmbh
• LinkedInlinkedin.com/company/seismion-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Seismion