COLT Duo Acoustic End-button 90º
FASTER COLT DUO – Acoustic End-Button – Cello, has been developed from the FASTER PRO violin model and adapted to the acoustic characteristics of the cello. It features an elaborate, compact, and complex design that enhances the cello’s sound and tonal quality, combined with increased harmonics and improved acoustic emission.
By incorporating two specific silver tubes with internal compressors, the FASTER COLT DUO eliminates the residual air generated inside the cello’s soundboard, which limits its vibration capacity. It reproduces the vibrations of the lower area of the cello’s soundboard and other adjacent parts, generating a significant amount of acoustic power and contributing to the growth of harmonics, which are reinforced by increasing the intensity of the emerging air collected by the two silver tubes.
FASTER COLT DUO substantially inhibits vibration dispersion. works on the cello as an “all-in-one”:
- Enhances radiated energy.
- Amplifies sound production and acoustic projection.
- Distributes and organizes the frequency spectrum.
- Offers high acoustic stability under pressure and humidity variations.
- Increases harmonic production.
- Expands dynamic range.
- Increases timbre quality.
- Facilitates playing.
- Increases response speed.
- Reduces, in most cases, the production of wolf tones.
- Eliminates, in specific cases, the production of wolf tones.
- Prevents the loss of a large portion of the acoustic energy produced by the cello as well as the transfer of unwanted frequencies.
- Transmits the recovered energy, acting as a passive amplifier.
The COLT DUO is the ideal complement to the FASTER Artica, Dorna, and Meiga acoustic end pins for cello, as well as the BELTON acoustic stoppers. The combination of these elements undoubtedly offers an abundant amount of quality sound and great playability.
When you need to install your COLT DUO on a different cello, simply purchase a replacement COLT Cone, adapt it to the new instrument, and attach your COLT DUO
Taxes / VAT and shipping not included
TECHNICAL CHARACTERISTICS
- End-Button with a single size, suitable for any 10 mm diameter cello end pin.
- Weight: ± 63gr.
- Measurements and t: 3.5 x 3 x17cm.
- Offers great comfort and precision in opening and closing, exerting a high degree of coupling force with approximately half a turn of the tightening knob.
- Simple assembly system using an easily adaptable universal cone (from ∅ 28 to 25 mm) machined from insulating thermoplastic resin.
- Dynamic interior blocking system against parasitic vibrations, made of elastic polymer with maximum mechanical resistance.
- End-Button made of composite with high dimensional stability, excellent hardness, and density that favors the speed of sound propagation. This material offers high resistance to traction, deformation, and wear due to friction.
- Two 935 silver tubes, 8.4 and 9.9 cm respectively, and 7 mm in diameter, with brass and silver compressors.
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Pavel Gomziakov
Cello soloist & chamber musician - Lisboa, Portugal
There have been many pieces of research on acoustic improvement on cello spikes. I tried almost all of them, but none convinced me. However, the FASTER Artica 600 cello endpin makes a real difference!
Sound becomes free and achieves a large projection in the concert hall.
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Nicolas Hartmann
Principal cellist - Orquestre National de Lyon. France
I enjoy very much playing my cello with my new FASTER Artica 600 Titanium endpin. The instrument sounds better. The projection is more efficient, and the sound is more rounded, deep, and rich in harmonics.
I am so happy!
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Gabriele Geminiani
Principal cellist - Orchestra Santa Cecilia. Roma, Italy
I have installed the FASTER Titanium 600 cello endpin, designed by maestro José María Lozano, and I am incredibly satisfied with the results. From the very first moment, I have noticed a massive improvement in my violoncello.
I recommend this endpin to all cellists for being such a valuable invention.
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Scott Dickinson
Viola soloist, chamber musician and principal violist of the BBC Scottish Symphony Orchestra - Scotland
Dear José María, thank you so much again for helping me and my viola with the FASTER Titanium. I am so happy!
Many people have noticed an improvement in my viola, so a very big thank you. I have told many people about you and will continue to do this!
Thank you again and all very best wishes.
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Günther Sanin
Concertmaster - Orchestra Arena di Verona. Verona - Italy
The FASTER Silver has increased the sound and the harmonics in my violin, thus getting a quicker response and making it easier to play. Some fellow musicians ask me whether I had a new violin!
I am very much satisfied with the results and recommend it to all violinists.
Thank you for your valuable help in making my violin even more beautiful!
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Rodrigo Moro Martín
Principal double bassist - Orquesta Nacional de España & Mahler Chamber Orchestra. Spain
The FASTER Artica endpins improve the sound enormously, and also the instrument’s response. Its reaction is more pleasant, and an improvement in the string resonance is noticeable both in the bow and the left hand.
In my case and my instrument, it considerably increases the sound value. It is not only a matter of power and brightness but also of sound quality.
I have tried two endpins, the Artica Titanium and the Artica Silver. With the titanium model, the sound gets more rounded, and the range of harmonics is much better than with a regular endpin. The feeling with the silver model is similar, although, in my opinion, the sound quality is much better, being much more round and refined.
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Giovanni Battista Fabris
Concertmaster - Orchestra del Teatro Carlo Felice. Genova, Italy
I have the privilege of having been the first to try the FASTER Silver, created by José María Lozano.
The sound quality produced by the FASTER Silver is excellent. In addition to the FASTER Titanium features, caused by faster physical functioning and air movement inside the instrument, you can produce better dynamics.
The intensity that the sound acquires is physically perceptible in the hands so far that it becomes rather pleasant, as when making dough for bread. The ease of execution increases, and so does the emission rate. Doing better seems impossible, but you never know with him. The attainable bow attack is impressive. It produces many more harmonics. To sum up, as much as it may cost, given the results, it is a low price.
Bravo, José María
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Javier Albarés
Principal cellist - Orquesta de Radio Televisión Española. Madrid, Spain
Dear José María, allow me to share with you my opinion about your FASTER Artica 600 Titanium and Silver cello endpins, a real discovery for me. Not only do they improve the production of harmonics in the instrument, but they also produce a considerable increase in loudness. The tone in my cello has become clean and beautiful, with astonishing clarity and sharpness. What the Artica cello endpin can accomplish is striking.
Congratulations on the thorough study of the sound quality of the instruments, and on your attention towards our instruments’ accessories, which far from staying mere accessories, they turn out to be indispensable music tools thanks to you. Thank you so much!








