i completed the test of 80 questions in about 90 minutes i must say that their q & a with explanation are very amazing and easy to learn. if you would like to practice without a time limit, you have the option to do that as well. that was a lighting fast payment and great communication. before we move on to the buyer’s guide, please first read this part. when the weather warms, plant the roots outside. this one has an input transformer also center tapped. so that's all we talk about when we talk about our wines. 