You can adjust the treble and bass of your music directly from the speaker itself.
Brad's Deals Editor Michael,
The Marshall Stockwell Portable Bluetooth Speaker with Flip Cover drops from $159.95 to $99.99 with free shipping at Marshall via Amazon. This is the best price we found for one by $49. We noticed that Best Buy is price-matching this offer. However, Amazon is the better place to buy this speaker since they're also including a coupon that takes 50% off the new Echo Input if you add one to your order. The Stockwell has a 25-hour battery life, Bluetooth, and an auxiliary input for a wired connection. Sales tax is charged in most states.