Yes, if you don't like the blotches you should use a prestain conditioner.
Depending on how much of the grain you want to see, different conditioners will give you different results. You can try a 50/50 mix of 1lb dewaxed shellac and denatured alcohol. This will decrease the absorption of the dye into the maple and you may have to use a darker stain of apply several coats to get the desired color.
Others have used and like Charles Neil's Pre-Color Conditioner - Blotch Control but I have not.
Target EM4000 clear stain base is extremely effective prestain conditioner. You can apply it with a brush and wipe off. I have found this to be the best conditioner I have ever used (on pine) and allowed the grain to show through.
I have also found that if I use a plant mister and spray the surface with distilled water let it dry and then lightly sand, I will get less blotching.
Testing is the only way to make sure you will be happy with the end result.