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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryRetail & CommerceRetail - Books & MediaZurichIsler Irniger Sennhauser Geigenbaumeister AG
Isler Irniger Sennhauser Geigenbaumeister AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Isler Irniger Sennhauser Geigenbaumeister AG is the manufacture, restoration, rental and sale of stringed instruments, particularly violins, violas and cellos, as well as the manufacture and sale of bows and accessories. This also includes consulting and services such as instrument care and repair.

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Products & services

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Isler Irniger Sennhauser Geigenbaumeister AG

✓ Offered10
Sale of String Instruments and Bows
Sale of modern and antique violins, violas, cellos and gambas, as well as matching bows; including baroque instruments, baroque and classical bows, and accessory advice.
Rental of String Instruments
Rental of violins, violas, cellos and double basses for children and adults; including bow, case, rosin, shoulder rest, advice and crediting the rental amount toward the purchase.
Repairs for String Instruments and Bows
Professional repairs for violin, viola, cello and bow; advice on repair options, handling of minor and major damage, and, on request, a replacement instrument.
Restoration of String Instruments
Thorough restorations of violin, viola and cello with protection of the original material, precise workmanship and instrument-specific advice.
Custom Construction of String Instruments
New construction of violins, violas and violoncellos based on individual consultations about playing style, sound expectations and musical goals; from wood selection to fine tuning of the sound.
Baroque Conversion of String Instruments
Historically oriented baroque conversion with adjustments to mensur, neck angle, bridge, string selection and setup; including partial adjustments such as gut strings or baroque bows.
Sound Adjustment
Sound adjustment and sound regulation for violin, viola, cello, bow and viola da gamba to optimize sound and playing technique.
Bow Rehairing
Rehairing of bows for string instruments as a workshop service in the field of services.
Appraisal of String Instruments
Appraisal of violin, viola, cello and bow as part of the workshop services.
Strings and Accessories
Strings, rosin, accessories, cases and other items for string instruments; available in-store and in the online shop.
Trust & reputation

ranQ Trust Score of Isler Irniger Sennhauser Geigenbaumeister AG: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Isler Irniger Sennhauser Geigenbaumeister AG scores 83.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.80.024%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.87.310%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.88.08%
Isler Irniger Sennhauser Geigenbaumeister AG scores 85.5 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%
Isler Irniger Sennhauser Geigenbaumeister AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Isler Irniger Sennhauser Geigenbaumeister AG scores 88.6 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 35.88.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Isler Irniger Sennhauser Geigenbaumeister AG reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.7 out of 5 stars from 30 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 30 reviews across all connected sources

Sources
GGoogle4.730
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Schlossergasse 9
8001 Zurich
Opening hours
Mon
Closed
Tue
14:00 - 18:00
Wed
14:00 - 18:00
Thu
14:00 - 18:00
Fri
14:00 - 18:00
Sat
10:00 - 16:00
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.410.425
Founded
1997 · 29 years
Last commercial register change
January 9, 2025
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.100.06%
  • 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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