Wishing you a very happy birthday!

Pianists and piano lovers, thank you so much — it's thanks to you that I am continuing to do this. You tell me, "It's beautiful!"— and it truly is. I've completed the replacement of the previously broken part, and now the instrument, as if reborn, will delight us with its marvelous sound. We will hear its voice once again — with its silvery flow of overtones. We invite musicians, investors, piano manufacturers, and anyone who would like to support the project in any way to collaborate. email: acouhyb@gmail.com https://acouhyb.es/

Hi Massimo! It was really great to hear from you, and I truly appreciate it! Thank you so much! I’ll definitely keep you informed if there’s any progress around the project. Have a great day, Sergey

Hi Massimo! It was really great to hear from you, and I truly appreciate it! Thank you so much! I’ll definitely keep you informed if there’s any progress around the project. Have a great day, Sergey

Dear Massimo, I’m very sorry for my long silence! Several piano manufacturers are currently considering the possibility of producing pianos with the ACOUHYB system, and they’ve paused to reflect on it. I’ve also stopped collaborating with the Japanese company for several reasons in a month ago. At this moment, ACOUHYB is still in its early stage. I continue my daily work as a piano technician, reinvesting what I earn into developing the project step by step. The first ACOUHYB piano was built and presented to the public on September 26th, 2025. It was an experimental model, but unfortunately, it broke down the next day. Now I have all the spare parts ready and I’m preparing for the repair. New concerts with ACOUHYB could be planned from autumn 2026. Meanwhile, I’m working intensely and searching for investors to cover patent and development costs. If you know anyone who might be interested in supporting the project, we could already start reserving possible concert dates — for example, at Petit Palau Barcelona or a smaller hall at L’Auditori de Barcelona. And of course, I would love to dream about concerts in your country as well. Ideal spaces for such performances are small acoustic halls — intimate venues where sound lives naturally, like Salle Cortot in Paris. Many musicians have already expressed their wish to be part of ACOUHYB, and this gives me great inspiration and hope. For now, I’m focusing on: – replacing the cast-iron frame; – installing the soundboard amplifier (already prepared). Later, I’ll work on: – the ACOUHYB Switch, allowing the same instrument to be used both traditionally and with the system; – and a left-pedal lock for “left-foot-free” performances. Thank you so much for your continued interest and kind support! With warmest regards, Sergey Gogolev

Dear Massimo, I’m very sorry for my long silence! Several piano manufacturers are currently considering the possibility of producing pianos with the ACOUHYB system, and they’ve paused to reflect on it. I’ve also stopped collaborating with the Japanese company for several reasons in a month ago. At this moment, ACOUHYB is still in its early stage. I continue my daily work as a piano technician, reinvesting what I earn into developing the project step by step. The first ACOUHYB piano was built and presented to the public on September 26th, 2025. It was an experimental model, but unfortunately, it broke down the next day. Now I have all the spare parts ready and I’m preparing for the repair. New concerts with ACOUHYB could be planned from autumn 2026. Meanwhile, I’m working intensely and searching for investors to cover patent and development costs. If you know anyone who might be interested in supporting the project, we could already start reserving possible concert dates — for example, at Petit Palau Barcelona or a smaller hall at L’Auditori de Barcelona. And of course, I would love to dream about concerts in your country as well. Ideal spaces for such performances are small acoustic halls — intimate venues where sound lives naturally, like Salle Cortot in Paris. Many musicians have already expressed their wish to be part of ACOUHYB, and this gives me great inspiration and hope. For now, I’m focusing on: – replacing the cast-iron frame; – installing the soundboard amplifier (already prepared). Later, I’ll work on: – the ACOUHYB Switch, allowing the same instrument to be used both traditionally and with the system; – and a left-pedal lock for “left-foot-free” performances. Thank you so much for your continued interest and kind support! With warmest regards, Sergey Gogolev

Dear Massimo, I was really glad to receive your letter! You’re right — the project was born at a not-so-perfect time. But it’s okay, we have no choice but to keep moving it forward as much as we can. Thank you so much! I’ll leave you a link — if you have time, please give it a listen too: https://youtu.be/ZFJj0ptBN5Y?si=vemx_7SnyMCeLr6L The subtle sustain effect sound of the Acouhyb can be heard in this video. Have a great day, Sergey

Dear Massimo, I was really glad to receive your letter! You’re right — the project was born at a not-so-perfect time. But it’s okay, we have no choice but to keep moving it forward as much as we can. Thank you so much! I’ll leave you a link — if you have time, please give it a listen too: https://youtu.be/ZFJj0ptBN5Y?si=vemx_7SnyMCeLr6L The subtle sustain effect sound of the Acouhyb can be heard in this video. Have a great day, Sergey

Dear Massimo, ☺️ When we first heard the main timbre voice of the first grand piano with the ACOUHYB system, it was clear that we were dealing with a new acoustic sound effect, something we had not used before, at least on the piano. The sound duration of a piano with an ACOUHYB system is perceived as 20-25% longer. The background accompaniment of the sound harmonics wound by the lowest tuned fourth string realizes the sensations in the perception of the musical piece. Today, more and more professional musicians are joining the project. There are composers who write music specifically for ACOUHYB. The richness of harmonics in the sounds of an ACOUHYB assures us that this has a future. We will develop a new topic on the specificity of the sound of the first register of ACOUHYB, which is usually tuned in our concerts according to the generally accepted standards for tuning the piano, and we will tell people about it. We have already talked about the fact that “the first timbre of ACOUHYB with a standard tuning has a specific and special background sound, but I didn’t think it would manifest itself so strongly in the real ACOUHYB with its 4 strings per note.” S. G. When playing it, you feel as if you are playing with accompaniment. The harmonics envelop you. This can be compared, for example, to when you dip your hand in water and then in jelly – you seem to feel a slight difference between the two. The additional volume of the sounding harmonics draws us into the music even more strongly. You want to keep playing and not stop. This is a special aesthetic feeling that arises and is characteristic of playing the piano with the ACOUHYB system. https://youtu.be/A2Pb5TkUx44?si=lFNT-PEWdoE5X-lr https://www.facebook.com/share/v/19S4eMihhB/ https://goo.gl/maps/Rcgbf6LqLLbQKKABA?g_st=aw This can only be understood and felt if you try it with your own hands. I'll be glad to see you, tell me about it and come when it's more convenient for you so I can tell you about the ACOUHYB system. And you could take advantage of the opportunity to discover the new ENSCHU pianos models: E-121 EX; E-170 EX; E-186 EXS. I'll wait for your news! Best regards, Sergey Gogolev Acouhyb PIANO Center. Enschu Office. 8 Renart, 08030 Barcelona Spain http://wa.me/34622226956 Email: acouhyb@gmail.com https://acouhyb.es/ We are engaged in retail and wholesale trade of: - new ENSCHU pianos; - used pianos; - refurbished pianos; - pipe and electric organs; - tuning and repair of pianos, pipe organs and harmoniums.

Dear Massimo, ☺️ When we first heard the main timbre voice of the first grand piano with the ACOUHYB system, it was clear that we were dealing with a new acoustic sound effect, something we had not used before, at least on the piano. The sound duration of a piano with an ACOUHYB system is perceived as 20-25% longer. The background accompaniment of the sound harmonics wound by the lowest tuned fourth string realizes the sensations in the perception of the musical piece. Today, more and more professional musicians are joining the project. There are composers who write music specifically for ACOUHYB. The richness of harmonics in the sounds of an ACOUHYB assures us that this has a future. We will develop a new topic on the specificity of the sound of the first register of ACOUHYB, which is usually tuned in our concerts according to the generally accepted standards for tuning the piano, and we will tell people about it. We have already talked about the fact that “the first timbre of ACOUHYB with a standard tuning has a specific and special background sound, but I didn’t think it would manifest itself so strongly in the real ACOUHYB with its 4 strings per note.” S. G. When playing it, you feel as if you are playing with accompaniment. The harmonics envelop you. This can be compared, for example, to when you dip your hand in water and then in jelly – you seem to feel a slight difference between the two. The additional volume of the sounding harmonics draws us into the music even more strongly. You want to keep playing and not stop. This is a special aesthetic feeling that arises and is characteristic of playing the piano with the ACOUHYB system. https://youtu.be/A2Pb5TkUx44?si=lFNT-PEWdoE5X-lr https://www.facebook.com/share/v/19S4eMihhB/ https://goo.gl/maps/Rcgbf6LqLLbQKKABA?g_st=aw This can only be understood and felt if you try it with your own hands. I'll be glad to see you, tell me about it and come when it's more convenient for you so I can tell you about the ACOUHYB system. And you could take advantage of the opportunity to discover the new ENSCHU pianos models: E-121 EX; E-170 EX; E-186 EXS. I'll wait for your news! Best regards, Sergey Gogolev Acouhyb PIANO Center. Enschu Office. 8 Renart, 08030 Barcelona Spain http://wa.me/34622226956 Email: acouhyb@gmail.com https://acouhyb.es/ We are engaged in retail and wholesale trade of: - new ENSCHU pianos; - used pianos; - refurbished pianos; - pipe and electric organs; - tuning and repair of pianos, pipe organs and harmoniums.

Dear Massimo, ☺️ When we first heard the main timbre voice of the first grand piano with the ACOUHYB system, it was clear that we were dealing with a new acoustic sound effect, something we had not used before, at least on the piano. The sound duration of a piano with an ACOUHYB system is perceived as 20-25% longer. The background accompaniment of the sound harmonics wound by the lowest tuned fourth string realizes the sensations in the perception of the musical piece. Today, more and more professional musicians are joining the project. There are composers who write music specifically for ACOUHYB. The richness of harmonics in the sounds of an ACOUHYB assures us that this has a future. We will develop a new topic on the specificity of the sound of the first register of ACOUHYB, which is usually tuned in our concerts according to the generally accepted standards for tuning the piano, and we will tell people about it. We have already talked about the fact that “the first timbre of ACOUHYB with a standard tuning has a specific and special background sound, but I didn’t think it would manifest itself so strongly in the real ACOUHYB with its 4 strings per note.” S. G. When playing it, you feel as if you are playing with accompaniment. The harmonics envelop you. This can be compared, for example, to when you dip your hand in water and then in jelly – you seem to feel a slight difference between the two. The additional volume of the sounding harmonics draws us into the music even more strongly. You want to keep playing and not stop. This is a special aesthetic feeling that arises and is characteristic of playing the piano with the ACOUHYB system. https://youtu.be/A2Pb5TkUx44?si=lFNT-PEWdoE5X-lr https://www.facebook.com/share/v/19S4eMihhB/ https://goo.gl/maps/Rcgbf6LqLLbQKKABA?g_st=aw This can only be understood and felt if you try it with your own hands. I'll be glad to see you, tell me about it and come when it's more convenient for you so I can tell you about the ACOUHYB system. And you could take advantage of the opportunity to discover the new ENSCHU pianos models: E-121 EX; E-170 EX; E-186 EXS. I'll wait for your news! Best regards, Sergey Gogolev Acouhyb PIANO Center. Enschu Office. 8 Renart, 08030 Barcelona Spain http://wa.me/34622226956 Email: acouhyb@gmail.com https://acouhyb.es/ We are engaged in retail and wholesale trade of: - new ENSCHU pianos; - used pianos; - refurbished pianos; - pipe and electric organs; - tuning and repair of pianos, pipe organs and harmoniums.

Dear Massimo, ☺️ When we first heard the main timbre voice of the first grand piano with the ACOUHYB system, it was clear that we were dealing with a new acoustic sound effect, something we had not used before, at least on the piano. The sound duration of a piano with an ACOUHYB system is perceived as 20-25% longer. The background accompaniment of the sound harmonics wound by the lowest tuned fourth string realizes the sensations in the perception of the musical piece. Today, more and more professional musicians are joining the project. There are composers who write music specifically for ACOUHYB. The richness of harmonics in the sounds of an ACOUHYB assures us that this has a future. We will develop a new topic on the specificity of the sound of the first register of ACOUHYB, which is usually tuned in our concerts according to the generally accepted standards for tuning the piano, and we will tell people about it. We have already talked about the fact that “the first timbre of ACOUHYB with a standard tuning has a specific and special background sound, but I didn’t think it would manifest itself so strongly in the real ACOUHYB with its 4 strings per note.” S. G. When playing it, you feel as if you are playing with accompaniment. The harmonics envelop you. This can be compared, for example, to when you dip your hand in water and then in jelly – you seem to feel a slight difference between the two. The additional volume of the sounding harmonics draws us into the music even more strongly. You want to keep playing and not stop. This is a special aesthetic feeling that arises and is characteristic of playing the piano with the ACOUHYB system. https://youtu.be/A2Pb5TkUx44?si=lFNT-PEWdoE5X-lr https://www.facebook.com/share/v/19S4eMihhB/ https://goo.gl/maps/Rcgbf6LqLLbQKKABA?g_st=aw This can only be understood and felt if you try it with your own hands. I'll be glad to see you, tell me about it and come when it's more convenient for you so I can tell you about the ACOUHYB system. And you could take advantage of the opportunity to discover the new ENSCHU pianos models: E-121 EX; E-170 EX; E-186 EXS. I'll wait for your news! Best regards, Sergey Gogolev Acouhyb PIANO Center. Enschu Office. 8 Renart, 08030 Barcelona Spain http://wa.me/34622226956 Email: acouhyb@gmail.com https://acouhyb.es/ We are engaged in retail and wholesale trade of: - new ENSCHU pianos; - used pianos; - refurbished pianos; - pipe and electric organs; - tuning and repair of pianos, pipe organs and harmoniums.