1/3.3x Gain – This option is best if you use mainly IEM’s and low impedance headphones. The 3.3x gain still has enough power for almost all headphones (including 600 ohm models). Default – This configuration is best for nearly every headphone available on the market and will fit most use case scenarios.

Your personal information is kept 100% private. Our site is encrypted with a 128-bit encryption, meaning your data (personal and credit card information) is kept secure from the time you first visit our site to the time you place an order. Under no circumstances is your information shared with another party, guaranteed. Keep in mind, “it would take significantly longer than the age of the universe to crack a 128-bit key.”

Your credit card information is sent off site to Authorize.net for processing. No credit card information is ever stored on our servers. Both PayPal.com and MayflowerElectronics.com are encrypted with the same level of security (128-bit encryption).

We accept all major credit cards, PayPal, Bitcoin, and Amazon Pay.

Please send a message to customer support. If your order has not been processed for shipping, your order will be cancelled and payment will be refunded. Please note with a new PayPal policy update, PayPal no longer refunds our fee's to the transaction. Any cancelled order made with PayPal will have a small (3% US and 4.5% International) amount removed from the refund. Amazon Pay/Credit Card payments will receive a full refund.

Our products are only available on our website and through our distributor’s which you can find on the Distributor page.

If you are unsatisfied in anyway, please contact us as we may be able to help. Our return policy has a 14 day period after receiving the order. If you are in that window please contact us to start a RMA. We do charge a 15% restocking fee and do not refund any shipping costs.


We ship to most countries, some high risk countries we do not ship too. If you are in one of these blocked countries and the website won’t process your order, get in touch with us and we will process your order manually upon verification.

Due to the fact that your payment is processed by PayPal’s system, we ship to the address on the PayPal account, not the one specified on the order.

International customers are responsible for VAT & custom duties for their country. This amount is not included in the shipping cost and will be billed by your country. If this amount is denied by a customer and the unit is returned to us, customers will be responsible for the return shipping and duties charged.

If the order is processed in time and you receive tracking information before 12 PM EST, it should be going out the same day. This only applies with USPS Priority Express mail, UPS overnight is not guaranteed on Fridays.

No, we ship Monday-Friday excluding USPS holidays.

Please contact USPS and report your package as not received. If USPS shows your package was delivered, the local driver will be contacted. We are not responsible for lost or stolen shipments. If you need assistance completing a claim form with USPS, please contact our customer support. You can find more information on here at USPS.com regarding packages that have not been received.

Yes, you will receive an e-mail with tracking information once your order is processed for shipping. Tracking information is generally updated between 8-11 A.M. EST.

All international orders are price below $50 or sent as a gift to lower or eliminate customs charges


Both are audibly similar, but the Rev B. model has updated hardware, which means it’s more compatible with different sources. For example, the Rev B. model now works with iPads and PS4’s, whereas the original Rev A. does not. If you plan on using the ODAC with only a PC/Mac/Linux, you can save some money and grab the cheaper model.

Please send us a contact form on our website or give us a call for any problems with your purchase.

Linus Tech Tips and Tek Syndicate are great forums to search and ask questions about our products. As always, you can send us a question via our contact form or give us a call.