Zen POWER9 MOST 25 | Network Amplifier

The Zen POWER9 MOST Network DSP Amplifier includes an integrated MOST 25 network preamp, nine amplified output channels (1380 total watts RMS), and one RCA preamplifier output (used for optional high-power subwoofer amplifiers). It is compatible with many European vehicles using the MOST 25 infotainment network - 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). 

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 "look-ahead" 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. Click here for more information on Ford ACM channels. 

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 4GA power wiring to the battery must be installed for proper operation (not included)

INPUT Digital Input from the vehicle network (MOST 25)

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, Low/High/Band-pass Filters

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: Butterworth, Bessel, Chebychev, Linkwitz-Riley, and Biquad filter designs 

NOTE:  The Zen POWER9 requires a Speaker Interface Harness for the installation to be able to be successfully completed. This harness is not included and is sold separately. There are BMW, Mercedes, Porsche, and Audi-compitible harnesses, as well as a universal harness. Zen Audio does not offer Plug-and-Play speaker integration harnesses for all listed vehicles. If there is not a PnP speaker harness, wiring a Universal harness to either a third-party interface harness, or directly to speaker wiring, is required.

If no compatible vehicle-specific speaker interface harness is listed, order the Universal version and connect the wires as needed. 

For vehicle applications, please click here.

- Zen POWER9 MOST 25 Network DSP Amplifier 

- USB C cable adapter 

- QR code to access downloads 

- MOST fiber-optic cabling

NOTE: A Speaker Output Harness is required (not included). Zen Audio does not offer Plug-and-Play speaker integration harnesses for all listed vehicles. If there is not a PnP speaker harness, wiring a Universal harness to either a third-party interface harness, or directly to speaker wiring, is required.

IMPORTANT: The Zen POWER9 requires a Speaker Interface Harness for the installation to be able to be successfully completed. This harness is not included and is sold separately. There are BMW, Mercedes, Porsche, and Audi-compatible harnesses, as well as a universal harness.

Guides and Manuals: 

Zen POWER9 MOST25 General Installation Guide Rev D

Zen POWER9 DSP Tuning Guide Rev G

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

Knowledgebase articles: 

What is a Preamp?

Zen Audio Networked Preamps 

Zen POWER9 Amplifier White Paper 

System Design with Zen POWER9 

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 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).

What cars does it work in? 

Many 2006-2020 European vehicles with premium sound - 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

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

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Google
 
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California Online Privacy Protection Act
 
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Our Privacy Policy link includes the word 'Privacy', and can be easily be found on the page specified above.
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