Testimonials
Through out time, I've had the pleasure to have Mastered so many projects. Very often, this process ends up going beyond the professional side, leading to friendship, which I've come to cherish over the years.
I appreciate all the trust that you put in my work!
"When we reissued the record July 13 (1990, live), the CD booklet had a mention that it had been mastered. It's not true. In 1990 there was no technique, equipment or training to master a record in Portugal - you could do a little here and there, raising and lowering frequencies. Rui Dias warned me and the fans realized that, on the reissue of July 13 (in July 2020) we would hear things previously hidden, without expression.
And so it was. This is what mastering is all about. A skill that Rui is specialised in, investing tons of money to have the world's top gear and software used to give smell, colour and dimension to our music - he add quality to the sound art. And it's because of the quality of his work that I stopped sending our records to New York (sorry Vandette), because the really good stuff is here on the south bank of the river Tagus."
"I've known Rui since the days when he worked at Tcha-Tcha-Tcha Studios, which at the beginning was mainly a recording dedicated studio. Despite being a versatile sound engineer, Rui was always very interested on the audio mastering side and so he opened his own studio. And he did it well. His long professional experience, his very well trained ears and the excellent equipment he has acquired - analogue and digital - allows him to develop Mastering in an international standard.
I've already had the opportunity to witness this in the mastering of new records (Fandango, Luta Livre) and in the restoration of old recordings from vinyl records and even VHS tapes (reissues of Peste & Sida). We used to go abroad for Mastering, now that's not necessary anymore, Mister Master Studio has the best solutions, right here at our door".
“When I think about Rui Dias, there are two words that come to my mind immediately: professionalism and friendship. Rui is certainly one of the most competent and dedicated guy I know in the music industry. He never say no to an urgency. Through out the years that we've been working together, there's never been a problem, not even a small one, with every single master that comes from him (and there have been hundreds). He's always there to clarify any doubts that arise, with the spirit that distinguishes the great professionals - a tremendous will to learn and an unparalleled generosity to share knowledge.
It's a pleasure to work with you Rui!”
“For all your mastering needs, either national or international, Mister Master is the studio , Rui Dias is the man! I’ve just had my first song of the album mastered by Rui Dias and he will be mastering the rest of the album when it’s ready!
He’s not just a great mastering engineer, he’s a musician with great sensitivity and emotion and that’s my main reason to have chosen him to take care of my tracks.
Great job and thank you Rui for making it sound so good!”
He’s not just a great mastering engineer, he’s a musician with great sensitivity and emotion and that’s my main reason to have chosen him to take care of my tracks.
Great job and thank you Rui for making it sound so good!”
I've known Rui Dias for many years, way before his specialization in mastering. He's always been very careful about recording and mixing and I've always liked his sensibility that he had been improving over the years.
Let's say that he has a clinical ear. About all the mixes that i've asked him to Master, all frequencies are always enhanced in the right way, with the necessary sobriety appropriate to the type of music and without unnecessary exaggeration. It's the sensibility I was talking about. For that reason, all my latest work in which I was involved as a producer, have been mastered by Rui at the Mister Master studio."
Let's say that he has a clinical ear. About all the mixes that i've asked him to Master, all frequencies are always enhanced in the right way, with the necessary sobriety appropriate to the type of music and without unnecessary exaggeration. It's the sensibility I was talking about. For that reason, all my latest work in which I was involved as a producer, have been mastered by Rui at the Mister Master studio."
"The claim "Mastering is an art, not a science" fits in the definition of Mister Master Studio's work like a glove. Mister Master Studio understands music like we do, is creative like we are, and uses the best tools to raise our work to the best quality. Everytime I've requested a mastering service, I've gotten back all the comfort and an absolute quality that I need to release my work."
“The act of creation, inevitably generates expectations about what results from it. Writing, composing songs, recording them in the studio with the essential participation of the musicians, is a demanding job that we want to be as close as possible to what we have in our minds. Then, it's mandatory that the result of all this work, reaches people with the sound that we imagined at first, with the balance and texture that the music requires. The mastering work done by Rui Dias at Mister Master Studio is amazing in that aspect and I was very happy with the final result. For the next record, I'll be back there, for sure. ”
"Rui Dias is a very special human being to me. We've been on many stages together and we've travelled a lot of kilometres, so... well... other times. What comes out of this introduction, is that this man has a very well trained ear and a huge experience in studio work. what I can say about Rui is that: his methodology, the usage of various concepts and his professionalism, make the quality of Mister Master Studio enormous. Thank you Rui Dias".

Francisco Grilo
Mixing Engineer
"Professionalism, dedication and friendship, are the three pillars, which grounded on an undeniable vocation, make Rui's work the final complement for all those who aspire to perfection. The Mister Master Studio, equipped with an exquisite selection of modern equipment in terms of processing and monitoring, is a true alchemical laboratory where the transmutation of our creations reach their highest sonic dimension. Cheers, Rui".
"There were times when Mastering was done abroad, but for years now we have a great professional, Rui Dias. He is our industry guru who is also a great person. Good job Rui!"
“Working with Rui Dias is a true pleasure. He’s an easy going person, he meets deadlines and really knows what he’s doing. He always go through the right way and he knows how to listen to musicians and publishers in the requests they make to him. I highly recommend his Mastering services.”
"Mister Master Studio is specialized in Mastering and was introduced to us on "The Red Album" and Rui did a great job which we loved a lot. The further album "The Black Album" was a natural choice. Once again an excellent experience. The equipment is top notch!... and Rui... "is the Best Master"!"
"Experience, accuracy, knowledge, equipment and sensitivity. These are some of the mandatory requirements for the best Mastering Engineer. Rui Dias and Mister Master Studio have all those characteristics. So I don't hesitate to trust my music to Rui, when it comes to Mastering."
“In these latest years, working with Rui has been an experience of evolution. His skills to achieve the sound image that my mixes ask for, gives me all the confidence to put my work in his hands and his ears.”

Juan Carlos Casado (Kallé)
Recording and Mixing Engineer
"The complexity of our sound universe needed all the technical and artistic attention of someone who understood our compositions. The competence and intuition of Rui Dias allowed us to exalt, sublimate and magnify all the tracks of our first album (Queda Livre). After hearing what we heard, we can tell that it won't be our last Mastering with Rui!"
"I was very pleased with the result of Rui Dias' Mastering work in all the projects he has already mastered for me. My music got to the level of the best international mastering studios. Besides all this the communication is fast and efficient! He became a fundamental part of my work."
“Over the years, I recorded many times with Rui Dias as a recording and mixing engineer, and I got to know quite well his extreme dedication to the musical cause.
For all those records in which I've participated as a guitarist and some others that were mastered by Rui, I can only say that I always like how they sound."

Mário Delgado
Guitarist
"Estúdio Mister Master gave my songs the finishing touch they needed. I always ask Rui to master them, and I'm never wrong.... Everything's on point! You can hear mastering!"
"Nowadays there are many Mastering solutions.
Working with Rui, you'll get professionalism, quality and good taste, from the first contact, until the final delivery.
Friendly and helpful.
I strongly recommend it!”
Friendly and helpful.
I strongly recommend it!”

Diogo Melo de Carvalho
Percussionista
"Al'Fado" / "Lucky Duckies"
"Al'Fado" / "Lucky Duckies"
"I strongly advise you to master your music at Mister Master Studio. It has excellent equipment and above all, the competence and know how of Rui Dias."
"It was a pleasant surprise to find a Mastering Studio in Portugal with Mister Master Studio's quality. Excellent service, quality and friendliness. I highly recommend it."

Paulo Ferraz
Recording and Mixing Engineer (Funchal-Madeira Island)
"Experience, intuition, dedication and assertiveness. The Mastering of Lado Esquerdo 's album at Mister Master Studio was 'THE' magical touch that the songs were asking for. Thanks for everything Rui!"
"Professional studio with great vibe and very good sound."
"World Class mastering done by an excellent human being! Perfect match!"
"A good recording start is only possible when we know that down the line, we have a Rui Dias @ Mister Master Studio at the finish line."
"Mastering? Say no more.
Rui Dias at Mister Master Studio. Based on my experience, you don't have to think that much."
"Working with Rui is having the safetiness that things will end up well. Rui has a very special way of approaching music."

Francisco Santos
Recording and Mixing Engineer
"The frequencies handled by Rui Dias at Mister Master Studio, are like a certain sonic oxygen for the soul."