That depends on you. KTVA will give you the tools to get the most out of your voice that can possibly be gotten. It takes time and effort. Don't kid yourself. You will have to work at it for quite some time if you're like anybody else here. You will have some immediate results, but many vocal achievements take time to accomplish. In the end, you will have VASTLY better results with KTVA over any other vocal method.
KTVA is the BEST product of its kind. There are many other vocal lessons that will take your money and leave you wondering what happened. You will get solid results with KTVA.
Skype or Studio lessons are a good way to enhance your learning and give you a boost, however many students participate only in the KTVA DVD/download programs and are quite satisfied with their progress.
How good is Great? If you are willing to put in the work that it takes to take you from where ever you are now to whatever Great means to you, you can do it on your own with the lessons provided. That part is entirely up to you, and your willingness to put in the practice time, over a period of time. Great singing does not come overnight, or even in a year, if you aren't putting in the time and effort it takes to get there. Ken gives you the tools to become a great singer, if you will follow his instructions and put in the work it takes to get there.
Ken shows you how to do it. Then You have to DO it.
Chances are that after some time of applying yourself to the KTVA program as Ken teaches it, you will hear what many here have heard when they step down from the stage: "What have you been doing? You sound GREAT!!!"
I think you will see the best improvements in your voice that you have ever experienced. Ken asks that you practice an hour or more a day, five or six days per week.
If you can stick with a practice schedule like that for three months, you will make great strides. It is recommended that you spend a minimum of six weeks per each KTVA Volume. Some spend 3 months on each volume or more. If you want to keep making progress, you will have to stay with that practice schedule indefinitely, for as long as you want to continue to improve.
Real vocal training is something that takes a great commitment on your part. You will be improving for the rest of your life if you keep working your KTVA program all the while. This is REAL vocal training. It will REALLY grow your voice. It is a long-term commitment.
You will not be through with your KTVA training in just 3 months, unless you are Superman. But, if you really work your tail off, you will surprise yourself with the progress you make. Don't be fooled by programs that tell you this is going to be super-easy, effortless, and instantaneous... That's just not how real vocal training works. "Secrets" and "Fast Track to easy vocal success" is not going to do much more than relieve you of your money. Solid Vocal training takes time, effort, and focus.
Do it. You'll be glad you did!!!