Hifonics ZXR900/2E amplifier
2-channel amplifier, 2 x 200/300/450 W RMS (4.2.1 Ω), 1 x 600/900 W RMS (4.2 Ω), Class D
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Hifonics ZXR900/2E Amplifier
The ZEUS E-Class series extends the proven ZXR series with very modern and highly efficient class D amplifiers. These "Expansion" type final stages impress with enormous power in an exceptionally compact cooling body. Upon their debut in Car & Hifi magazine (issue 1/2025), they thrilled the editorial team so much that the entire series received the prestigious PRODUCT OF THE YEAR 2025 award. The real stars are the new 2-channel amplifiers equipped with the latest Infineon® chipsets, which, thanks to 1 Ω stability and extreme power, have no competition in the compact class. Particularly impressive is the ZXR1200/2E model, offering 2 x 600 W RMS at 1 Ω, which even exceeded this value in the Car & Hifi magazine test (1/2025), reaching up to 2 x 807 W RMS.
In bridged mode, it was able to deliver up to 1614 W RMS at 2 Ω! This performance earned it the BEST PRODUCT award in the top class. The ZXR900/2E model also sets new standards - instead of the stated 2 x 450 W RMS at 1 Ω, the editors measured 2 x 540 W RMS and awarded it the highest possible grade of 1.0 and the LEISTUNGSTIPP (Performance Tip) award. Thanks to RCA outputs, high-level inputs, EPS® protection, variable crossovers up to 5 kHz, and compact bass remote control, these amplifiers are extremely flexible and adaptable for any sound system.
Main Features
- 1 Ω stability and Infineon® chipset.
- Advanced class D technology with very high efficiency.
- Selected and audiophile-tuned components.
- Side panels made of cast aluminum.
- High-level inputs with EPS® (Error Protection System).
- Automatic turn-on function, ready for Start/Stop systems.
- IFT (Interference Free Technology), tested for electromagnetic compatibility.
- Blue backlit logo panel.
- Compact remote control for bass level.
About the Brand
Hifonics is among the world legends in car audio. Since its inception in the 80s, it has defined standards in the field of car sound systems and is a strong player in the segment of amplifiers, speakers, and subwoofers. The brand is known for its uncompromising philosophy - to combine top performance with precise craftsmanship and a distinctive design. Hifonics products appeal to all customers, from demanding audiophiles to enthusiasts wanting to experience deep bass and maximum dynamics in their cars. Hifonics amplifiers are renowned for their high stability, clear sound, and enormous power potential. Speakers and subwoofers also stand out for their precise craftsmanship and long lifespan, even under extreme load. Hifonics continually innovates its products. Modern technologies, such as hybrid buffer capacitors, extremely rigid carbon membranes, MICA composite membranes, or advanced cooling, push the boundaries of sound even further. Besides top amplifiers, the portfolio includes practical accessories from bass remote controls to mounting accessories and design protective grilles. If you are looking for a proven brand that combines a legendary name with modern technologies and top-notch sound, Hifonics is the right choice for your car. Treat yourself to superior performance that you can feel firsthand - with Hifonics, you will always be a step ahead!| Catalog number | ZXR900/2E |
| Brand | Hifonics |
| Links | Official web presentation |
| 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. | 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. | 2 |
| 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. | 2 x 200 / 1 x 600 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. | 2 x 300 / 1 x 900 W |
| RMS power into 1 ΩRMS power when the subwoofer is loaded at 1 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier. When connected to 1 Ω, significant heating of the amplifier may occur. | 2 x 450 W |
| 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. | < 0.02 % |
| 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. | 107 dB |
| High pass filter (HPF)HPF / HP or The "hi pass filter" offers the option of setting the amplifier using a potentiometer so that medium, possibly mid-bass and treble frequencies play upwards from a certain frequency. Example: Amplifiers most often have an HPF from 40 to 300 Hz. If we set the potentiometer to a value of approx. 150 Hz, the sound will be clipped so that it plays frequencies from 150 Hz up to the maximum upper limit of the entire frequency range of the amplifier, perhaps up to 20,000 Hz. We recommend setting this potentiometer in the range of 80-160 Hz. Thanks to this setting option, the speakers can handle a higher performance, as you will not overload them with bass in the lower frequency range. | 50 - 5000 Hz |
| Low-pass filter (LPF)LPF / LP or "low pass filter" offers the possibility to adjust the amplifier using a potentiometer so that the lower band plays only the frequencies in a certain band that you need. This filter is used to adjust the frequency range for the subwoofer, so that it does not overload or distort the sound. Example: Amplifiers most often have an LPF from 20 to 300 Hz. We recommend setting this potentiometer in the range of 45-80 Hz. | 50 - 5000 Hz |
| Bass boostBass boost or bass enhancement. With this function, the bass itself can be emphasized, at a high level of bass boost, the speakers and the subwoofer can distort a lot and the sound will be worse than better. We therefore recommend using the "bass boost" function wisely. With maximum use of bass boost, there is a risk of damage to the speakers and thus to the subwoofer. | 0 - 12 dB |
| Damping factorDF - Damping Factor . It is the ratio of the load (repro + cables, crossover, etc.) to the internal resistance of the amplifier. The bigger the DF, the more controlled the bass. Amplifiers with a lower DF tend to hum. Subwoofers with a higher Q in the bass reflex and sometimes in the enclosure will also cause humming. | > 300 |
| 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 |
| 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. | Yes |
| Dimensions of the amplifier | 150 x 50 x 273 mm |
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