Phase One Upgrades

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Phase One Upgrades are American Hard Bag's lineup of ultra high value speakers and speaker kits. We have searched the market for the very best value in speakers that exists. Most of the Phase One kits include Powerbass speakers. We have found these speakers to be the very best out of any speaker even close to the price range. There are speakers such as Diamond, Hertz, Hybrid and a few others that offer some performance and fitment advantages over the Powerbass speakers, but of course all of these come in at a different price range. In any event we are very confident that you will find that all of our Phase One products and packages outperform even high expectations.