Zen POWER9 A2B+ | Network DSP Amplifier

The Zen POWER9 A2B+ Network DSP Amplifier includes an A2B network preamp, nine amplified output channels, and one RCA preamplifier output (used for optional high-power subwoofer amplifiers). It is compatible with pre-2025 Fords (for 2025+ Fords, please use the Zen POWER9 F25 model). For specific applications, please refer to the Vehicle Compatibility tab below.

The Zen network preamp in the Zen POWER9 receives pure digital stereo sound from the OEM source unit, without any OEM compression, limiting, equalization, or filtering. The preamp also executes volume, front/rear fade, and tone control commands from the vehicle controls, as well as integrating audio streams from various non-entertainment sources (such as handsfree calls and audible alerts). If you can imagine using your vehicle infotainment, just the way you do now, but with incredible sound from your aftermarket upgrade, then you understand Zen Audio! For more details on network preamps, click here, or see knowledgebase articles available in the Support section below.

The output stage of the Zen POWER9 uses reference-grade Class D chipsets, to ensure the lowest distortion and noise. 

• Four 70-watt output channels
• Four 150-watt output channels
• One 500-watt output channel (often used for subwoofers)
• One preamp RCA output channel (for optional external subwoofer amplifiers)

Total Harmonic Distortion plus Noise, Zen POWER9 

It should be noted that all these power ratings are RMS, not “peak power”, and are cited at ultra-low distortion levels. While the distortion rating for the subwoofer channel is slightly higher, it is still 1/10th the distortion present on most subwoofer-only amplifier channels in car audio. For more detailed specifications, please see the Specifications tab below.

The Zen POWER power-supply section uses stiff regulation - that means your amp makes the same power at all times. Most car-audio amps go up and down in their power delivery as the car’s electrical system voltage rises and falls. With Zen, you get full rated power at all times, regardless of voltage fluctuations or charge-state modes.

Charging System Voltage Vs Output Power, loose regulation vs. ZenPOWER9 

Zen POWER also dynamically adjusts to incoming music signals. The Class H technology in the ZP9 can adjust the potential power output for musically-relevant periods of time. To learn more about the amplification section of the Zen POWER9, click here.

Dynamic Headroom, loose regulation vs. Zen POWER9 "look-ahead" technology

The ZEN DSP section of the Zen POWER9 allows for the user to calibrate each individual amplifier channel individually, ensuring that all speakers work together for the highest-fidelity sound. Using the free software application, the user can adjust delay, level, crossover filtering, equalization, polarity, and phase. For more on tuning DSP for cars, see here.

The DSP section also processes four amplifier channels in the Audio Control Module of Ford vehicles.

ACM-Powered Speakers by Vehicle Model

F-150/250 8-Speaker B&O (all years) – Front A-pillar tweeters
F-250/350/450 B&O Unleashed – Front A-pillar tweeters, headrest speakers
F-150 B&O Unleashed (2021 – 2023) - Front A-pillar tweeters, rear door speakers
F-150 B&O Unleashed (2024+) – Front A-pillar tweeters, headliner height speakers
Bronco w/B&O 2022 – 2024 – Center channel, rear overhead pod speakers
Explorer w/B&O (all years) – Front tweeters, D-pillar surround speakers
Expedition w/B&O (all years) – Front tweeters, D-pillar surround speakers

 Click here for more information on Ford ACM channels.

If you wish to power these speakers from the 25-watt ACM channels, the A2B+ includes the ability to apply crossover filters, equalization, delay, polarity inversion, and phase, using the A2B+ internal DSP. In testing, these channels often have appropriate power for A-pillar tweeters and overhead height speakers. You may wish to power rear door or center-channel speakers with your new amplifiers. 

The Zen POWER9 Amplifier’s USB port allows for adjustment of the DSP settings via a PC, and also for firmware updates if needed.

In most cases, final adjustment of the product requires use of a personal computer and internet access (not included). The software application can be downloaded at zenaudio.com free of charge. To achieve peak performance, adjustments should be based on acoustic measurement with a measurement microphone and third-party measurement software (not included). 

Nav-TV recommends professional installation, as these products are technically complex and special tools are often required. Nav-TV’s worldwide network of installing dealers offer professional installation.

NOTE: The Zen POWER9 requires a vehicle-specific Speaker Interface Harness for the installation to be able to be successfully completed (not included, sold separately, please see below).

NOTE: While the ZP9’s network connection and speaker connections are plug-and-play, new power wiring to the battery must be installed for proper operation. This power wire is included in the optional Installation Kit. NAV-TV offers optional mounting kits for specific vehicles. These include a mounting bracket, power and ground wire, and vehicle-specific interface harnessing (as shown). For vehicles without installation kits, some fabrication is often required for amplifier mounting.

INPUT 

Digital Input from the vehicle network (A2B 1.0) 

OUTPUT 

Class D using TDA3255 Ultra HD ICs 

Power rated @10V-24V DC: 

• Four 70W RMS channels, 4Ω, <0.005%
• Four 150W RMS channels, 4Ω, <0.005%
• One 500W RMS channel, 2Ω, @1% THD
• One 2.5V RMS RCA analog preamp channel
• One Remote Turn-on Output 12VDC (+) 500mA capability 

Signal-to-Noise Ratio ~ 105db 

THD+N @ -1dBFS <0.005% 

Total Output Power (Peak) 2400W 

Total Output Power (RMS) 1380W 

Frequency Response 20Hz to 20kHz +/-1dB 

POWER SUPPLY 

Class H variable-rail with stiff regulation 

Current Consumption (Stand-by) < 125uA 

Current Consumption (Operational Idle) 1-2A 

Current Consumption (Peak) ~100A @ 14.4VDC 

Operational Voltage 10-24V DC 

Low-Voltage Shutoff 6V DC 

OTHER 

Dimensions: 6.75” W x 9” L x 1.9” H 

Weight: 1.78 kg 

Country of Origin Thailand

ZEN DSP 

Digital-Analog Converters - 32-bit, operating at 48kHz 

Digital Signal Processor with Network Ports - 32-bit 

Blackfin Processor 

Crossovers, Levels, EQ, Delay, Phase Fully flexible 

Input/output routing Gain adjustment (0.1 dB accuracy) 

Channel parametric equalizer 

Time alignment (up to 20ms per channel) 

Center and ambiance channel upmixing 

Polarity inversion 

All-pass filters (1st and 2nd order) 

Channel muting (individual or global) 

Channel limiting (adjustable dynamic range compression) 

Advanced channel crossover filtering algorithms, including: Butterworth, Bessel, Chebychev, Linkwitz-Riley, and Biquad filter designs 

Low-pass, high-pass, and band-pass filters

Zen POWER9 A2B+Compatibility

Please reach out to us with any questions!

*SuperDuty F-Series trucks include the F-250, F-350, F-450, and F-550 variants

Notes 
1. The vehicle model year is not always the same as the year in the vehicle's date of manufacture. If you are unclear on the official model year, use the official NHTSA VIN lookup tool here.

2. Ford vehicles often offer two levels of B&O sound package (one example is the F-150, with standard "8-speaker" B&O and the upper-end B&O Unleashed option packages). The Zen POWER9 is compatible with both levels of B&O system, but some system configurations may have more than nine speakers. Since the Zen POWER9 has nine output channels, some F-150 owners use the ACM channels to power the front A-pillar tweeters and the overhead height speakers. Most system upgraders bypass any headrest speakers. Learn more about this in our article on Ford ACM channels.

3.The Zen POWER9's network input is compatible with vehicles in all markets. In some cases, aspects of the audio system may vary and, some physical differences may be found. For example, the amplifier location and mounting for AUS-market Ford Rangers is different from North American-market Rangers. However, the Zen POWER9 is compatible with the network and can be used after installation variations are addressed.

- Zen POWER9 A2B+ Network DSP Amplifier 

- USB C cable adapter 

- QR code to access downloads 

NOTE: A Speaker Output Harness is required (not included).

IMPORTANT: The Zen POWER9 requires a vehicle-specific Speaker Interface Harness for the installation to be able to be successfully completed.  This harness is not included and is sold separately. It is included in Vehicle-Specific Installation Kits, and is also available separately. 

Guides and Manuals: 

Zen POWER9 A2B+General Installation Guide 

Zen POWER9 Installation Guide F-150 24+

Bronco Zen POWER9 Installation Guide

Zen POWER9 DSP Tuning Guide Rev G

Knowledgebase articles: 

Network Preamps 

Zen Audio Networked Preamps

Ford ACM Channels 

Zen POWER9 White Paper 

System Design with Zen POWER9

Starter Configuration Files:

F-150 B&O 8-Speaker

F-150 B&O Unleashed (w/ceiling speakers) 

Bronco B&O Ranger B&O 

Acoustic Measurement Software 

Room EQ Wizard 

Open Sound Meter 

Target Curves 

Educar Target Curve for REW

NoNo Target Curve Generator 

Microphones 

Audiofrog UMI-1 V2

Test Tones 

Mono Pink Noise

How many channels does the Zen POWER9 have? 

This network amplifier has nine amplified outputs and one preamp RCA output. It also allows control of the four 25-watt channels in the Ford ACM.

How powerful is the Zen POWER9?

1380 watts RMS - four 70-watt channels, four 150-watt channels, and one 500W mono channel (125W in center-channel mode). For more details, see the Specifications tab. 

What's an ACM?

The ACM is the Ford acronym for the Audio Control Module - what you might call the "head unit". For more information, see this tech article.

What's the RCA for? 

For cases where the user needs more than 500 watts for their subwoofers, or wants to use the mono channel for a center speaker. Then an external mono amplifier can be installed, and it can receive signal from this RCA output.  

What makes this amp sound good?

Some of that is the Zen Audio network preamp technology (more on that here), and some of it is that it's just a really good amplifier (more on that here).

Does it work in all Fords? 

It works in pre-2025 Fords with B&O sound, using V1.0 of the A2B infotainment networking protocol. For 2025+ Fords using V1.1 of the A2B protocol, use the Zen POWER9 F25 amplifier. Please see the Vehicle Compatability tab for specific coverage.

What else will I need to install the Zen POWER9? 

• 4GA power and ground*
• A speaker interface harness*
• A means of mounting the amplifier*

*included in the Zen Audio Installation Kits for specific vehicles

See the installation manual for more information. 

You may cancel your order without penalty prior to the product shipping.

Products cancelled or refused after the product has shipped will incur shipping and handling charges as well as a 20% restocking fee.

We will accept returns of eligible items within 30 days of your receipt. Exchanges are also accepted during the 30-day window, and may occur at Nav-TV’s discretion during the warranty period. Products returned within the first 30 days after purchase ,and are subject to a 20% restocking fee. Products must be new, unused and in their original packaging to qualify for a refund.

 Please visit the Nav-TV or Zen audio website to start a return or exchange. The order number provided in your confirmation email is required in order to process the return.  

 If you believe you have received a defective product, please contact Technical Support to initiate an exchange. Technical Support will work with you to determine next steps. Upon our receipt of the product and confirmation of defect as determined by our inspection, we will provide an exchange unit. Please see our Warranty policy here.

 Returned product must be in new and unused condition. The order number provided in your confirmation email is required in order to process the return. Any shipping and handling fees will not be refunded.  You will be responsible for return shipping costs. Upon our receipt of the product in unused/resalable condition as determined by our inspection, we will issue a refund to the credit method used to make the purchase.

Privacy Policy

This privacy policy has been compiled to better serve those who are concerned with how their 'Personally identifiable information' (PII) is being used online. PII, as used in US privacy law and information security, is information that can be used on its own or with other information to identify, contact, or locate a single person, or to identify an individual in context. Please read our privacy policy carefully to get a clear understanding of how we collect, use, protect or otherwise handle your Personally Identifiable Information in accordance with our website.
 
What personal information do we collect from the people that visit our blog, website or app?
 
When ordering or registering on our site, as appropriate, you may be asked to enter your name, email address, mailing address, phone number, credit card information or other details to help you with your experience.
 
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Google
 
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California Online Privacy Protection Act
 
CalOPPA is the first state law in the nation to require commercial websites and online services to post a privacy policy. The law's reach stretches well beyond California to require a person or company in the United States (and conceivably the world) that operates websites collecting personally identifiable information from California consumers to post a conspicuous privacy policy on its website stating exactly the information being collected and those individuals with whom it is being shared, and to comply with this policy. - See more at: http://consumercal.org/california-online-privacy-protection-act-caloppa/#sthash.0FdRbT51.dpuf
According to CalOPPA we agree to the following:
Users can visit our site anonymously
Once this privacy policy is created, we will add a link to it on our home page, or as a minimum on the first significant page after entering our website.

Our Privacy Policy link includes the word 'Privacy', and can be easily be found on the page specified above.
Users will be notified of any privacy policy changes:
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Users are able to change their personal information:
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