My subs were losing a lot of power. I invested in a red top optima it was ok for a while but,the same problem seem to re-surface. I looked all around for a decent price cap until I found this for the price this product is well worth it. Few things gave me a problem the size and the charging part. Other then that everything is fine the product is a little bulky and the charging part can be a hassle. I would recommended this product to anyone great product for your moves well worth it.
