PreSonus Quantum ES 4 4x4 USB-C Audio Interface

Get the gear you want, when you want it...that would be now!

With AMS 0% interest Payment Plans, you use your existing credit or debit card, so there’s no need to apply for a new account you might not want or need. This is an installment billing plan, where equal payments are made on your card, rather than the whole amount being charged up front - this way you are also not subject to high-interest penalty rates if you are late on one payment. Payments are made every 31 days, automatically deducted after the order ships. To sweeten the offer even more, any shipping charges, a small payment plan fee, and applicable tax are divided evenly across the payments as well. A credit check is required on 4, 6, 8, &12 pay plans, and we can have an answer back to you very quickly.

Customer Service

Free Shipping - No Extra Charge!

Our 4 state-of-the-art, strategically located warehouses are highly efficient and allow us to ship your gear in record time - and most orders will arrive at your door within 2 days for free. Shortly after you place your order, a Ship Confirmation email will arrive letting you know the order was picked, packed, and put on a truck. Full Details

12 Months EXTRA for Free!

Many of our competitors charge 10% or more for an additional 12 months of warranty on the products they sell. AMS offers this exclusive benefit to our valued customers at no extra charge. Thousands of items on our site and in our catalog carry the "Gold Lock Extended Warranty" icon. It means you get the manufacturer's full warranty plus 12 additional months, FREE!!!

Our 45 day return policy allows you to buy with confidence at AMS! If you are not completely satisfied with any item* purchased from AMS, return it to us within 45 days of the shipping date, and we will refund your money or help you with an exchange. That's always been our policy, and now we've added the ease of Electronic Return Labels!

Canadian Shipping Information

Welcome Canadian musicians! Buying your gear from AMS is as easy as going to a local music store, with more selection and more than competitive prices!

Items with this logo are eligible to ship to Canada. Please note that you will be responsible for payment of brokerage fees, duties and other import taxes applicable to your order.

NOTE: Free shipping offers do not apply to Canadian orders. Please be aware of custom fees - such as taxes and duties - when your order arrives. Since these fees vary from location to location, CUSTOMS FEES ARE NOT INCLUDED IN SHIPPING CHARGES. Please check with your local customs office for more information on the fees in your areas. Refusal to pay these fees will result in an undeliverable order. If returned, we do not refund shipping charges and may assess restocking fees to cover return shipping expenses.