I was very impressed with Ivan Folk's work on my songs - he made them sound how they should sound and I was amazed at the difference good mastering makes to a song. Ivan have been professional, quick and friendly throughout. It's been a pleasure dealing with him and I hope to continue to do so
Jon Potter(Cody Pomeroy) /England/ - singer, guitarist, songwriter
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"Ivan is a fantastic person with very dialed in ears. I own several of his recordings and listen to them not only as references for my own mixing, but also simply to enjoy his particular flavor of creativity. He is a great man and I wish life was such that we could be better friends."
Hi Ivan, thanks for your very fast working...I tried to fix it since last year and you did a great job in one day...I don't know if I should laugh or cry... since I put so much time and passion (and money) to get this fixed... BTW, it's probably a ME's secret, but what did you do? the 
bass seems tighter, but not compressed, the cymbals are present, but not harsh...it has more punch... So I'm pleased with the result and will ask my bandmate if he wants us to get the 6 another songs te get remastered too... again thanks...
Maxim Lehmann /France/
"It is always a great pleasure working with Ivan. He is not only a true audio professional, but also an artist who understands other artists. He never forces his musical taste on your expressions and artistry; he only makes you sound like YOU do, only better. I can highly recommend him for your mixing and/or mastering needs!"
Krisz /USA/ guitarist - the second best in Guitar Player Magazine’s Guitar Superstar ‘09 competition
„Ivan Folk and mastering7 have mastered every project I have produced over the past 10 years. I have come to expect nothing but the best in final mastering quality and critical listening. He always gives us the tools and advice to make our next project even better than the last. Ivan’s amazing musical talent and colorful music background allows him to have an open mind with each project and bring out the personality in all our music.”
Michael Payne, /USA/ Producer, Studio Manager – Hirado Studio
I had a very good experience with mastering7. Ivan Folk was able to take what we had worked so hard on and make it better. There is one song in particular that he rescued for me, and every time I hear it I am again thankful for the improvements he made. He was efficient and professional, and it was a pleasure to do business with him. 
Jennifer Opean /USA/ - singer, songwriter
I was cooperating with Ivan Folk at mastering7 on the studio mixing and mastering works of my debut album, "The Taste of Grace". I was deeply impressed by his professional and musical experience, accuracy and carefulness. He could work together with us very effectively, creating a good atmosphere. As a fairly nonprofessional songwriter I was pleased by the respect and sensitivity he was showing to my work and my intentions for the album. His opinions and suggestions were a great contribution to the musical message, not just the professional quality.
Erno Kerekes - producer, songwriter
„As the producer of Amaro Del, I have had the great pleasure of observing Ivan Folk's patience, dedication and professionalism during the mixing and mastering of our 2 albums. Iván is much more than an experienced sound engineer, he added a great amount to our music as a result of his knowledge as a musician himself.”
Norbert Maxim - producer, manager
The album titled Tabhair Dom Do Lámh – (Give me your hand) was mixed and mastered at mastering7. I am most satisfied with the mixing and mastering. Each instrument and voice can be heard separately, still they intertwine to create a whole. The different sounds are in due proportion and sound excellent. Although we never used bass guitar or anything of the like, the record has a nice, full sounding even in the bass range. Listening to the record one may experience the mood of live performance.
Ildiko D. Kiss -Iirish folk singer
Ivan Folk's high qualification in contemporary music and mastering techniques deeply determined the quality of our works. I can hear every detail of my arrangements in both of my musicales. The symphonic, vocal and electronic parts became well balanced. No masking of instruments, no over compressed roar, like in some of the pop songs nowadays.
Peter Andorka - composer
I worked with Ivan Folk at mastering7 several times in different styles as a musician and art director. His expertise was a big help for me during the mixing and mastering process. His masterful taste, incredible proficiency, compliance and kindness tremendously supported my work. The tracks mixed and mastered here sound very good! He always finds the adequte technical solutions serving the artist and his own style of music. 
Attila Csikos - jazz guitarist, arranger
We chose this studio after listening to the clean, fresh and vivid soundings of some CDs made here. Ivan Folk's experiences proved to be extreme help in improving our songs huddled up in the rehearsal room. Mixing and mastering made a huge difference in the quality of the sound. We recommend mastering7 to everybody who wants to make a great project, who wants to work with a professional who can bring out the best of the musical ideas.
J. Barth - blues guitarist, singer, composer of BLUE SPOT
"Now, we really thought our album sounded good when we finished recording it... But when we took it to MASTERING7 and listened to the results we realized it sounded more like mono AM radio before! We got the extra low punch and the brilliant highs and suddenly the material was ready to rock'n'roll!"
Firebell - rock band
The record proves that dynamic rock feeling not only comes from the regular rock band set up. Listening to the songs we haven't got the feeling of imperfection. The brightness and massive power of acoustic guitars, the incredible mixing and mastering, the proper spaces make this album to be in style.
Andras Gavel - Eucharist