A selection of musicians who have acquired an instrument by Stephan:

Violin
• Guillaume Antonini - Quatuor Leonis
• Jane Berger - 2nd violin Augsburger Philharmoniker
• Holm Birkholz - Berlin Philharmonic Orchestra
• Monika Blankenburg - Hamburg
• Philipp Bohnen - Berlin Philharmonic Orchestra
• Aline Champion - 1st violin Berlin Philharmonic Orchestra
• Eulalie Charland - soloist
• Harim Chun - NDR Sinfonieorchester
• Elzbieta Szymanska-Čonka - 2nd violin Wiener Symphoniker
• Albena Danailova - concertmaster Vienna Philharmonic Orchestra
• Yana Deshkova - concertmaster Aalborg Symfoniorkester
• Purchase through Deutsche Stiftung Musikleben, Germany
• Julien Dieudegard - soloist and Béla Quartett
• Eva Dollfuss - assistant concertmaster Dresdner Philharmonie
• Sara Domjanic - soloist
• Manuel Doutrelant - Ludwig Quartett
• Claire Duff - soloist
• Ashot Farkissjan - Arditti Quartet
• Isabelle Faust - soloist (A. Stradivari "Sleeping Beauty")
• Ning Feng - China Berlin (Strad 1727)
• Esther Feustel - Staatstheater Mainz Orchester
• Johannes Fleischmann - soloist
• Etienne Gara - soloist
• Roberto González-Monjas - concertmaster of the Orchestra of the Accademia Nazionale di Santa Cecilia, Rome, violin professor at the Guildhall School of Music & Drama, London
• Henry Gronnier - soloist and assisting teacher of Midori at University of Southern California, and Rossetti Quartett
• Giovanni Guzzo - soloist
• Johannes Haase - soloist
• Liang Haoxing - 1st concertmaster of the Luxembourg Philharmonic Orchestra
• Jakub Haufa - 1st concertmaster of Varsovia Symphony Orchestra
• Here playing and leading the III movement of Mendelssohn d-minor
• Karoline Hille - 1st violin Norwegian National Opera Orchestra
• Rainer Honeck - concertmaster of the Vienna Philharmonic Orchestra
• Klaus Hoyer - Hoyer Trio
• Marlene Ito - Berlin Philharmonic Orchestra
• Daniela Jung - 1st violin of the Bavarian Radio Symphony Orchestra
• Jae-Young Kim - Novus String Quartet
• Young-Uk Kim - Novus String Quartet
• Michal Kostka - Vienna Philharmonic Orchestra, Schulhoff Quartett
• Marian Kraew - 1st concertmaster of the Munich Symphony Orchestra
• Thomas Lefort, soloist, (protégé and student of Ivry Gitlis and Roland Daugareil, famous soloist at the Orchestre de Paris) playing our violin at the music festival "Violon sur le sable", Royan (Juli 2015)
• Marjolaine Locher - soloist
• Sandrine Mallet
• Rainer Mehne - Berlin Philharmonic Orchestra
• Charles Mutter - 1st concertmaster of BBC London Orchestra
• Nikola Nikolov - Ensemble Bel Air
• Arnaud Nuvolone - 1st concertmaster of Orchestre Pasdeloup, 1st violin of Opéra de Paris
• Annedore Oberborbeck - 1st concertmaster Tiroler Symphonie Orchester Innsbruck
• Igor Ozim - professor
• IhnSeon Park, Vienna
• Stefan Pöchhacker - Bruckner Orchester Linz
• Wilken Ranck - concertmaster of the Staatsorchester Darmstadt
• Shunske Sato - soloist, baroque violin (A. Stradivari, 1700 "Dragonetti" u.a.)
• Silviya Savova - Zürcher Kammerorchester
• A-Rah Shin - Associate concertmaster Seoul Philharmonic Orchestra
• Richard Soldan - 1st Violin Deutsche Oper Berlin
• Viktor Stenhjem - soloist
• Tobias Steymans - 1st concertmaster of theBavarian Radio Symphony Orchestra
• Julien Szulman - soloist
• Johannes Tomböck - 1st violin Vienna Philharmonic Orchestra
• Ana Maria Valderrama - soloist, 1st prize and audience prize at International Violin Competition Pablo Sarasate 2011
• Reinhold Wolf - 1st concertmaster of Deutsche Oper Berlin (G.B. Rogeri)
• Rainer Wolters - 1st concertmaster of the Radio Symphony Orchestra Berlin (Maggini)
• Toru Yasunaga - former 1st concertmaster of Berlin Philharmonic Orchestra
• Zhaoyang Lin - soloist and professor at China Central Conservatory of Music
• Stewart Webster - soloist, England and Scotland
• Julian Walder - Vienna Austria
• Jihwan Yi - Seoul Korea
• Kana Himeno - Berlin
• Markus Klein - Germany
• Winston Maxwell - Paris
• Lisa Obert - Swiss
• Michael Jones - England
• A.Peolovski - Opera de Paris
• Shaina Kuo - soloist, Swiss
• Alexander Read - solo Orchester Montreal Canada
• Caroline Pether - solo England Manchester
• Maja Anna Syrnicka - soloist, Germany Poland
• Aisling O'Dea - Scotland
• Emily Delitt - Scotland

Viola
• Julia Adler - soloist, principal of Munich Philharmonic Orchestra, professor at Hochschule Berlin
• Max Baillie - soloist
• Fanny Baradeau - Orchestre de l'Opera de Paris
• Robert Bauerstatter - Vienna Philharmonic Orchestra
• Matthias Benkert - 1st principal of Berlin Radio Symphony Orchestra
• Marie-Barbara Berlaud - Quatuor Rothko
• Marie-Noëlle Bernascon - soloist
• Lise Berthaud - soloist
• Cynthia Blanchon - Winner of the 2015 competition of the Mécénat Musical Société Générale
• Cristina Blanco Amavisca
• Monika Blankenburg - Hamburg
• Nicolas Bone - 1st principal of Radio France Philharmonic Orchestra
• Cyril Bouffyesse - principal of Radio France Philharmonic Orchestra
• Myung Whun Chung - musical director of the Radio France Philharmonic Orchestra
• Laurent Camatte - soloist
• Hélène Clément - Doric String Quartet
• Fanny Coupé - 2nd principal of Radio France Philharmonic Orchestra
• Purchase through Deutsche Stiftung Musikleben, Germany
• Sophie Divin - Orchestre de Paris
• Magali Foubert - professor at the Conservatoire de Musique de Mulhouse
• Sebastian Führlinger - Vienna Philharmonic Orchestra
• Siegfried Führlinger - professor, Berlin
• David Gaillard - 1st principal of Orchestre de Paris
• Thomas Hajek - Vienna Philharmonic Orchestra
• Benjamin Hartung - principal of Württembergische Philharmonie
• Daniela Ivanova - Vienna Philharmonic Orchestra
• Xavier Jeannequin, Paris
• Anna Krimm - Beethoven Orchester Bonn
• Karl-Heinz Krumpöck - Wiener Symphoniker
• Rainer Küchl - concertmaster of Vienna Philharmonic Orchestra
• Gad Lewertoff - professor at Tel Aviv University
• Benoît Marin - principal of Radio France Philharmonic Orchestra
• Purchase through Mécénat Musical Sociéte Générale, France
• Laura Möhr - soloist Stuttgarter Kammerorchester
• Alice Mura - principal of Gewandhaus Orchester Leipzig
• Béatrice Muthelet - 1st principal of Mahler Chamber Orchestra
• Jonathan Nazet - viola player at the Opera de Paris
• Hans Peter Ochsenhofer - Vienna Philharmonic Orchestra, Ensemble Wien
• Dagmar Ondracek - principal of Luxemburg Philharmonic Orchestra
• Lolla Petrovitsch - Walddörfer Kammerorchester Hamburg
• Francesca Piccioni - Lyskamm Quartett
• Sophie Renshaw - Oxford Philomusica
• Erwan Richard - soloist
• Pauline Sachse - 1st principal of Berlin Radio Symphony Orchestra, professor at the Hochschule für Musik Hans Eisler Berlin
• Naoko Shimizu - 1st principal of Berlin Philharmonic Orchestra, playing our viola at Yokohama's Philia Hall (Jan. 2007)
• Renaud Stahl - principal of Orchestre National d'Ile de France
• Anna Puig Torné - Mahler Chamber Orchestra
• David Vainsot - Orchestre National d'Ile de France
• Laurent Verney - 1st principal of Opera de Paris
• Manuel Vioque-Judde - Solist, plays our viola, 5th European Young Soloist Festival, Caracas (2016)
• Myung Whun Chung - music director Orchestre Philharmonique de Radio France
• Simone Jandl
• Elodie Laurent - France
• Jenny Lewisohn - England soloist, Hieronymus Quartet
• Seho Ha - soloist, Seoul Korea
• Maria Moros Ballesteros - Spain

Cello
• Julian Arp - soloist
• Monika Blankenburg - Hamburg
• Adrien Chosson - Orchestre Pasdeloup
• Corentin Dellicour - Douchetchka Orchestra
• Purchase through Deutsche Stiftung Musikleben, Germany
• Pierre Doumenge - soloist
• Mathieu Foubert - Southbank Sinfonia, Camerata Alma Viva, Rothko Quartett
• Olivier Garban - Strasbourg Philharmonic Orchestra, Ensemble Phileas
• Emmanuel Gaugué - 1st principal of Orchestre de Paris
• Harald Georgi - Qatar Philharmonic Orchestra
• Alexandre Giordan - principal of Radio France Philharmonic Orchestra
• Marie Gremillard - Orchestre Pasdeloup
• Maximilian Hornung - soloist
• Sebastien Hurtaud - soloist
• Olivia Jeremias - soloist, principal of Hamburg Philharmonic Orchestra
• Anastasia Kobekina - soloist
• Dimitri Kindynis - Nigel Keay Quartett
• Su-a Lee - assistant principal cello Scottish Chamber Orchestra
• Isabelle Loubaresse - Rouen
• Olaf Maninger - principal cello Berliner Philharmoniker
• Marcel Markowski - principal cello Sinfonia Varsovia
• Joëlle Martinez - Ardeo Quartett
• Robin Michael - soloist
• Johannes Mirow - associate principal cello Deutsche Oper Berlin
• Nadine Pierre - 1st principal of Radio France Philharmonic Orchestra, Trio George Sand
• Christian Proske - associate principal cello Tonhalle Orchester Zürich
• David Riniker - Berlin Philharmonic Orchestra, member of the 12 Cellisten der Berliner Philharmoniker
• Ben Rogerson - BBC Concert Orchestra
• Henry David Varema - soloist, Artimus Ensemble
• Lukas Wittermann - teacher at Ida Bieler International School of Music
• Johannes Zahn - Munich New Philharmonic Orchestra
• Eric de Wit - solo cellist Scottish Chamber Orchestra
• Sophia Rönnebeck - Salzburg Austria