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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryIndustryElectrical IndustryGossau SgA1 Sound Technologies Stefan Zehnder
A1 Sound Technologies Stefan Zehnder Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of A1Sound Technologies is the manufacture and distribution of components and accessories for the self-construction of loudspeakers, in particular electronic components such as coils, capacitors, resistors and crossover networks, as well as mechanical components such as bass reflex tubes, terminal connectors and screws.

AI-generated
Offering

Products & services

Industry:Electrical Industry
✓ Offered7
Loudspeaker kits
Kits for floor-standing speakers, compact speakers, home cinema, subwoofers and PA/sound reinforcement for DIY assembly.
Loudspeaker drivers
Tweeters, midrange drivers, mid-bass drivers, woofers, subwoofers, full-range drivers, coaxial drivers, passive radiators and other loudspeaker drivers.
Crossover components
Air coils, core coils, CFC foil coils, capacitors, resistors and accessories for building crossovers.
Accessories and small parts for speaker building
Bass reflex tubes, connection terminals, screw terminals, cables and plugs, spikes and speaker feet, insulating and damping materials, grills, screws and nuts.
Electronics for loudspeakers
Active modules, amplifiers and various electronics for loudspeaker construction and operation of active speakers.
Complete loudspeakers
Active speakers and passive speakers as ready-made speaker solutions in addition to DIY components.
PA / sound reinforcement
Components and kits for sound reinforcement applications, listed as a subcategory within the loudspeaker kits and drivers categories.
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A1 Sound Technologies Stefan Zehnder

Trust & reputation

ranQ Trust Score of A1 Sound Technologies Stefan Zehnder

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

A1 Sound Technologies Stefan Zehnder has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
A1 Sound Technologies Stefan Zehnder scores 78.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
A1 Sound Technologies Stefan Zehnder scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
A1 Sound Technologies Stefan Zehnder scores 0.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Bahnhofstrasse 40
9200 Gossau Sg

At a glance

Legal form
Sole proprietorship
UID
CHE-114.274.751
Founded
2008 · 18 years
Last commercial register change
November 27, 2012
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.67.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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