Amplifier with DSP processor HB 810 II 8AD

8-channel amplifier with DSP processor, 4 x 35 + 4 x 100 W RMS / 4 x 35 + 2 x 300 W RMS, player, BT streaming, 8 x Hi-level input, 2 x RCA inputs, 10 x RCA outputs, class AB + D
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Amplifier with DSP processor HB 810 II 8AD

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Zapco HB 810 II 8AD Amplifier with DSP Processor

The Zapco HB 810 II 8AD is an 8-channel amplifier with an integrated 10-channel DSP processor, representing an exceptionally interesting and technically refined solution for demanding audio installations. The unique combination of amplifier classes—four channels operating in class AB and four channels in class D—allows optimal distribution of power and sonic character according to the specific application. The integrated 10-channel DSP processor offers a 31-band equalizer, fully configurable crossovers, time alignment, level control, polarity and advanced signal routing. This enables the system to be precisely tailored to the specific vehicle and listener requirements. The amplifier features an 8-channel high-level input for easy integration into factory OEM systems, supplemented by RCA inputs and full-featured RCA outputs for further system expansion.

Equipment includes a Bluetooth 5.1 module for wireless music streaming and a brand-new mobile app that allows complete DSP configuration directly from a smartphone. The built-in music player also permits playback from USB devices, including lossless formats, making the HB 810 II 8AD a full-fledged central audio solution without the need for an external source. Compatibility with PC software and the option to connect a selectable remote control for convenient adjustment of volume, subwoofer, presets and input sources directly from the dashboard are standard. The Zapco HB 810 II 8AD is an ideal choice for advanced OEM upgrades as well as comprehensive audio systems where emphasis is placed on sound quality, power, flexibility and maximum control over the final performance.

Harmony Blue Note Series

The Italian brand Harmony originated in the 1980s alongside the first development of home loudspeakers from the high-end manufacturer ESB. In the 1990s it focused on car audio and introduced a broad range of products that combined precise sound with more accessible pricing. Zapco now revives that same philosophy under the Harmony Blue Note line— a new range of DSP processors and amplifiers that combine excellent engineering, superior sound quality and simple operation. The name Blue Note refers to the era of jazz recordings between 1930 and 1950, which produced music of exceptional depth and emotion. With this name Zapco pays homage to music that has soul and brings that philosophy into the modern world of car audio. The Harmony Blue Note series includes not only pure DSP units like the HB 68 II, but also DSP-equipped amplifiers and standalone powerful amplifiers. All models share Bluetooth streaming, intuitive control, wide connectivity and maximum user friendliness.

Control software for PC

Zapco has developed new PC control software that provides a complete set of professional DSP tools. The user interface offers clearly organized sections for equalization, crossovers, routing and time alignment. In the I/O Matrix section it is possible to precisely define which inputs are used for each output and at what ratio. Filters allow fine-tuning of high-quality crossovers with selectable type and slope for each channel. The 31-band graphic or parametric equalizer permits precise adjustment of the frequency response, including frequency, gain and Q factor. In the output channels section you can configure speaker assignments, delay, levels and polarity to achieve perfect phase coherence across the system. The program allows saving and loading presets, channel linking and configuration locking, and provides a clear environment suitable for professional technicians as well as advanced users.

Mobile app and built-in player

Every model in the Harmony Blue Note series has an integrated Bluetooth module that enables full control via smartphone. The newly developed app offers all the functions known from the PC version—from input and output configuration through crossovers and equalization to delay and individual channel levels. The app is designed to provide intuitive control even on smaller screens without limiting functionality. Users can tune the system, change presets or switch signal sources directly from their mobile device, which is ideal for final sound tuning in the car. The system also includes a music player that supports playback from USB devices. All common and lossless formats are supported—MP2, MP3, MP4, WMA, APE, FLAC, AAC, M4A, WAV, AIF and AIFC. Control is available from both the app and an optional remote control that offers track switching, volume, presets and source selection.

Main features

8-channel amplifier combining classes AB and D.
Integrated 10-channel DSP processor with a 31-band equalizer.
Class AB amplifier power up to 4 × 35 W at 4 Ω and 4 × 50 W at 2 Ω.
Class D amplifier power up to 4 × 100 W at 4 Ω and 4 × 150 W at 2 Ω.
Bridgeable class D channels up to 2 × 300 W at 4 Ω.
8 × high-level inputs for connection to factory head units.
2 × RCA inputs and 10 × RCA outputs.
Bluetooth 5.1 for wireless music streaming.
Built-in music player supporting MP2, MP3, MP4, WMA, APE, FLAC, AAC, M4A, WAV, AIF and AIFC formats.
OTG input for playback from USB devices.
Full compatibility with PC software and a mobile app for DSP control.
Option to connect an optional remote control.
Plug & Play design suitable for OEM installations.

Harmony Blue Note model range

The Italian brand Harmony was born in the 1980s together with the first home loudspeakers from the Italian hi-end manufacturer ESB Audio. Production of car speakers began in the 1990s with a wide range of products that combined high sound quality with significantly lower prices than ESB Audio products. The main mission of the Harmony brand has been to deliver a high standard of sound quality with faithful reproduction of the entire audio spectrum, premium workmanship and all at a more accessible price. The same applies in 2023, when Zapco decided to create a new Harmony product line. And why Blue Note? With this term Zapco recalls the Blue Note jazz era from 1930 to 1950. It is a way to link the product name to important moments in modern music history. Harmony now returns to the market with a wide range of DSP amplifiers, which will be expanded in the future with more products aimed at offering a complete lineup of audio devices to satisfy the needs of all music enthusiasts.

About Zapco amplifiers

Zapco is the oldest high-end car audio brand in the world, specializing in top-tier amplifiers and DSP processors for vehicles. The company was founded in the USA in 1974 and has since accumulated numerous awards—from prestigious organizations that evaluate product quality and innovation to global competitions focused especially on sound quality. Zapco amplifiers deliver audiophile-grade performance without compromise, define quality standards and set the criteria by which other products in the field are judged. For over 45 years Zapco has continually sought innovative ways to bring better sound to the automotive environment, and this tireless pursuit of absolute sound quality continues to produce new technologies and high-end products. Why? Because nothing else can seize the soul and bring tears to the eyes like music. Through music you can dance for joy... of all art forms, music has the strongest and most immediate effect on your body and mind. Reproducing music in all its beauty and subtlety deserves nothing less than the utmost effort of all Zapco employees. And also because music matters!

Catalog number	HB 810 II 8AD
Brand	Zapco
Links	Official web presentation (English)
Energy class of the amplifierAmplifiers are divided into two basic classes: analog and digital . Analog amplifiers (A/B) have higher consumption requirements, but usually have a more natural sound. Digital amplifiers (D) have significantly lower consumption and higher efficiency, but the sound may not be as faithful as with classic analog amplifiers.	AB + D
Number of amplifier channelsAmplifiers are divided into: - Monoblocks - 2-channel - 3-channel - 4-channel - 5-channel - 6-channel - multi-channel Each channel is used to power one speaker for the coaxial type, or one side if they are component speakers. Monoblock type amplifiers are mainly used for subwoofers. 2-channel are suitable for both subwoofers and, for example, the front pair of speakers in a car. 3-channel is used for front or rear speakers + subwoofer. 4-channel are used for front + rear speakers or 1 pair of speakers + subwoofer. 6 or 5-channel are used for 2 pairs of speakers + subwoofer, most often. Bridging means connecting the amplifier to a bridge, using the + pole from one channel and the - pole from the other channel. In most cases this is shown as "BRIDGED" on the amplifier.	8
RMS power into 4 ΩRMS power when loading speakers or subwoofer at 4 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier.	4 x 35 + 4 x 100 W / 4 x 35 + 2 x 300 W
RMS power into 2 ΩRMS power when loading speakers or subwoofer at 2 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier.	4 x 50 + 4 x 150 W
Frequency rangeThe ability of the amplifier to reproduce the signal from the lowest frequency to the highest = faithfully reproduce the sound in a specific frequency band. Professionally: In the frequency range from 40 to 16,000 Hz, the vast majority of fundamental and overtones (harmonics) of all musical instruments are found. We are interested in the course of the radiated sound pressure in this range of frequencies when the loudspeaker system is supplied with constant power. We call this course the frequency characteristic, which tells us the level of radiated sound pressure in decibels (dB) depending on the frequency. The frequency characteristic of a speaker or speaker system can be expressed most succinctly with a graph. Mostly, however, the frequency characteristic is indicated by indicating the maximum tolerance of the sound pressure in the given frequency range, e.g. 50 to 15,000 Hz -+ 6 dB. Since the frequency characteristics of loudspeakers and systems in general are quite uneven, some manufacturers do not even specify this maximum tolerance of sound pressure in decibels in their catalogs for reasons of prestige. Data impoverished in this way is unfortunately worthless. What is valid is that the manufacturer offers a speaker system with a frequency range of 30 to 20,000 Hz, if he is worried about stating the maximum unevenness of the sound pressure in this range, because he can have a tolerance of, for example, +- 20 dB. The unevenness or undulation of the frequency curve in good speaker systems for high-quality music performance should not exceed +-3 dB in the 80 to 12,000 Hz band and +-6 dB in the 40 to 16,000 Hz band. Greater unevenness already depletes or emphasizes certain tonal areas, which can cause audible or even disturbing distortion. The proportion between fundamental tones and higher harmonics also changes, thereby changing the color of the sound, and individual musical instruments as well as the entire musical image sound unnatural.	20 - 20000 Hz
Harmonic Distortion (THD)Total harmonic distortion indicates how much the input signal is distorted in the amplifier. Distortions appear as overtones contained in the output signal. The proportion of originally absent parts of the signal is given as a percentage, typical values are between 0.001% and 0.5%. Distortion is measured in their power band. If it exceeds the limit of 0.7% from a certain power, it is the value of the output power of the given amplifier, from which it no longer plays without distortion and from which the distortion usually increases steeply, so that no further increase in power can be counted on. The lower the value, the better.	< 0.05 %
Signal-to-noise ratioThe signal-to-noise ratio means that the output signal always contains noise. The signal-to-noise ratio expresses how much of this noise is compared to the useful signal. The so-called A value is given, which does not take deep and very high frequencies into account. This corresponds to the characteristic of human hearing, which is not so sensitive to deep frequencies, especially below 1 kHz. The higher the value, the better the amplifier is.	> 100 dB
Inputs	2 x RCA, 8 x Hi-Level, BT, AUX, optical
Outputs	10 x RCA
On-board voltage rangeThe ability of the amplifier to operate at a specified voltage. As the voltage decreases, so does the power of the amplifier. The ideal voltage in a car is between 13.8 and 14.4 V.	12 - 14.4 V
High level inputsThe high-level input on the amplifier allows connection directly to the existing speakers in the car without additional purchase of an external high/low adapter. Important equipment in the case of installing an amplifier on an original car radio.	Yes
Automatic on and offThis function allows you to automatically switch on the amplifier.	Yes
Integrated DSP processor	Yes
Number of DSP processor channels	10
Socket input terminalsFerrule terminals allow better wiring contact to the amplifier. It is also a more secure form of terminals. If you are tightening the sleeve terminals, we recommend retightening them after 1 day, as the connected cable gradually compresses.	Yes
Input for wired remote controlIf the amplifier has a remote control input.	Yes
Remote control included in the packageSome models of amplifiers also come with wired remote controls in the package, which on one side plug into the amplifier and on the other side you have a potentiometer that you can place anywhere in the cabin. A common place to place the remote control is under the steering wheel. The advantage is the regulation of power, and therefore volume, depending on driving conditions and the mood of the crew in the car.	No
Dimensions of the amplifier	190 x 166 x 45.5 mm