FAQs
What is a network preamp?
A network preamp is a autosound component that "pulls" unprocessed audio from the infotainment system's proprietary digital network, and converts it to a usable form (analog or SPDIF digital) for an upgraded aftermarket audio system.
In home-audio terms, it's like using the OEM source unit as a "transport", and the Zen Audio preamp as an "external D/A converter".
Why would I want to use a network preamp?
Simply put, because you want great sound!
Zen Audio preamps are audiophile-grade source units in their own right. On top of that, sourcing the signal from the network on its way to the OEM DSP amplifier prevents that amplifier from applying its own processing - the crossover filters, the compression, the phase manipulation, the fake exhaust sounds, the noise-cancelling (and associated feedback) - all of it is eliminated.
Here's an article on why fake exhaust and ANC make audio upgrades more difficult.
Read our article on Network Preamps to learn more.
If the signal is digital, can't I just use a device with a digital input?
Unfortunately, not all digital is the same. The digital inputs in most car audio products are Toslink fiber-optic cables carrying a SPDIF signal. SPDIF stands for "Sony Philips Digital InterFace" and was defined for Compact Discs, back in the 1970's. It's fundamentally a two-channel technology.
OEM automakers need the infotainment network to carry more than just the two left and right audio channels. The network also needs to carry non-entertainment sounds, such as handsfree call audio, navigation voice prompts, and chimes and other audible alerts. In addition, the network has to carry digital commands which are not part of the SPDIF standard.
Automakers have used several different types of digital networking technology - there is not one single industry standard. Zen Audio makes devices which are compatible with MOST 25, MOST 50, MOST 150, A2B 1.0, A2B 1.1, and Automotive Ethernet physical networks.
On top of that, different automakers use different communication methods over those physical networks. For this reason, some Zen Audio products work on more than one brand of vehicle (that is also why there is no single Zen Audio product which works in all vehicles!) New applications for Zen Audio network devices are released regularly.
Can I use your amplifier in a car without a network?
Unfortunately, our amplifiers lack a traditional analog preamp input stage - the network preamp takes the proprietary digital signal directly from the infotainment network - and so our amplifiers can only function when a compatible network is present.
What currency are the prices do I see in the site?
All prices are in USD.
I just placed an order, when will it ship?
Please allow 24-48 hours production time for your order to ship out, average shipping times are 7-10 business days excluding holidays.
Tracking numbers will be updated 3-5 business days after your order has been SHIPPED. If you don't have a tracking number after 5 business days please email us at sales@navtv.com
I am not in love with my order, can it be returned? What if there is an issue?
We offer a 100 % money-back guarantee if the product is defective or damaged. We give you 30 days to send it back to us for a full refund. You must ship it back at your own expense, once we have received the product we will refund the full amount of your original purchase. Please Include all a name and order number on the returned parcels.
Please note: If your package is on the way, you must wait for it to arrive and return it before receiving a refund.
Can I cancel my order?
You are able to cancel your order with no penalty! You must cancel your order before it ships. If the item is already sent please use our easy return system to get a full refund.
I have entered an incorrect address what do I do now?
If you have miss-spelled or auto-filled in an incorrect address, simply reply to your order confirmation email and confirm. Once you double-check if the address given is wrong kindly notify us via email at sales@navtv.com If the given address is wrong we can change the address to the correct one within 24 hours. No refund will be given after the 24 hours of incorrect submission.
How long does shipping take?
Shipping times vary as we do ship worldwide from different fulfillment centers based on your location. The average shipping time is 7-10 business days. Longer times if shipped from other than the US.
I have a question that wasn't answered, can you please help?
Absolutely! Please send us an email to sales@navtv.com and we will be happy to assist you in any way we can. We do receive a large number of emails, If you wish to get a prompt response please attach your order number and address the problem clearly, thanks.