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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryZurichTastenwerk GmbH
Tastenwerk GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Tastenwerk GmbH is the sale, maintenance and restoration of pianos and grand pianos. This also includes services such as tuning, repairs and the organization of concerts and events. The company also offers consulting and sales of new and used pianos and grand pianos, and has its own workshop for piano manufacturing and repairs.

AI-generated
Offering

Products & services

✓ Offered10
Piano and grand sales
New and used pianos, grands and selected digital pianos; brands such as Yamaha, Roland, Schimmel and Steinway & Sons, inspected, prepared and advised in the showroom.
Tuning service
On-site piano and grand tuning; on request also as a tuning plus service with fine adjustment, as well as cleaning of keys and instrument.
Piano workshop
Repair, partial revision and complete overhaul for pianos and grands; also sound optimisation, professional reworking and work on vintage instruments.
Silent system installation
Retrofitting Silent systems in pianos and grands, including installation of the AdSilent-2 and professional electronics installation.
Rental instruments
Rental of pianos, grands and digital pianos with flexible rental periods; delivered prepared, inspected and ready to play, with the option to buy later.
Purchase of pianos and grands
Assessment and purchase of used or inherited pianos and grands with on-site viewing, quotation, collection and immediate payment.
Occasions
Inspected, cleaned and regulated used pianos and grands with guarantee, initial tuning, piano bench, transport, hygrometer and care products.
Yamaha pianos & grands
New Yamaha acoustic pianos and grands, from entry-level instruments to concert grands, displayed in the showroom and available for advice.
Yamaha digital pianos
Yamaha digital pianos from compact entry-level instruments to hybrid models, as well as CLP-, CSP-, Disklavier- and Silent-models.
Steinway & Sons pianos and grands
Selected used Steinway & Sons pianos and grands with personal advice and five years’ guarantee.
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4.4/5

Tastenwerk GmbH

Trust & reputation

ranQ Trust Score of Tastenwerk GmbH: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Tastenwerk GmbH scores 91.6 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.87.024%
  • 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.100.010%
  • 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.95.08%
Tastenwerk GmbH scores 74.1 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.79.212%
  • 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%
Tastenwerk GmbH scores 83.3 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).83.322%
Tastenwerk GmbH scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tastenwerk GmbH reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 72 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
4.8
of 5

Aggregated from 72 reviews across all connected sources

Sources
GGoogle4.872
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Winterthurerstrasse 20
8006 Zurich
Opening hours
Mon
11:00 - 18:00
Tue
11:00 - 18:00
Wed
11:00 - 18:00
Thu
11:00 - 18:00
Fri
11:00 - 18:00
Sat
11:00 - 16:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-144.295.108
Founded
2018 · 8 years
Last commercial register change
June 9, 2022
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.
88.0
6%
  • 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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