High Fidelity Amplifier For Home Use Fever Integrated Amplifier HIFI Audio Amplifier RCA/XLR Input 300WX2 8 Ohm

The MK8900, with its almost exaggerated physical configuration and performance, crafts a HIFI-grade large-scale power amplifier capable of mastering all sounds from the engine

The MK8900 boasts two highlights and important features:

1. Adopt MOSFET to output protection channel

2. The core control and protection system of the entire machine features dual channels with a total of 32 power transistors, providing a total power reserve of 4800W per channel. Its dynamic performance is like a mountain roar and a sea tsunami, and only with such an enormous reserve power can it fully harness all sounds

Signal-to-noise ratio of 120db, HI-END quality performance, OPA2604 dual operational amplifier

Equipped with a total of 1600W thermosetting resin-encased transformers, this high-end power amplifier boasts a rare 800 damping coefficient, offering exceptional control capabilities. It comes with a dedicated filtering system, ensuring a clearer and brighter sound. Featuring a Youtang ultra-large capacitor array with 16 units totaling 160,000uF , it provides abundant energy storage. The channel isolation design works from the source, effectively isolating it like two mono power amplifiers

The MK8900 not only offers a dynamic and immersive listening experience, but also boasts a serene and mellow sound quality

We can address all your concerns about power amplifiers in one step

The Pro version boasts 7 major upgrades, making it an excellent masterpiece in the HIFI amplifier series

The MK8900 high-fidelity HIFI amplifier, with its black and gold color scheme that exudes technology and elegance, stands as a functional work of art. Good sound quality cannot be achieved without the high-quality collaboration of the audio source, amplifier, and speaker. The amplifier plays a crucial role as a link between the previous and the following, and there are often issues with the compatibility of amplifier and speaker. The powerful performance of the MK8900 is sufficient to accommodate various sizes of speakers and various tone styles, and the MK8900 amplifier can fully express them.

The MK8900 is not picky about speakers, as most HIFI speakers can handle it. However, it is also very particular about speakers, as some speakers cannot showcase its powerful capabilities. In terms of configuration, it is well-designed and well-founded. We will elaborate on this in detail below.

In fact, the MK8900 power amplifier is not in the same league as other power amplifiers, neither in terms of configuration nor performance, making it incomparable. Below, we have compiled detailed information about the MK8900 from various aspects, clearly illustrating through its genuine materials and components how the MK8900 achieves excellence in one step. The purpose is solely to provide clear product information for reference.

Seven major upgrades make it as powerful as a tiger with wings

1 Upgrade power tube

2. Upgrade to pure Class A/Class A and B automatic switching

3 Upgrade treble/bass adjustment/bypass

4 Upgrade left and right channel balance adjustment

5. Selection of upgraded output speakers

6. Upgrade to silent mode (a practical function of vinyl record player)

7. Upgrade to a brand-new structural layout

Feature Highlight 1 of MK8900

Using MOSFETs to output protection channels allows the reserve power to break through its limitations

The output protection channel acts as the "valve" for power output. The ultra-high reserve power at the front end relies entirely on the "valve" to pass through. The MK8900 power amplifier employs four MOSFETs (two per channel), each with a maximum current capacity of 260A, approximately 10 times that of a typical relay. The ultra-large "valve" current capacity not only breaks through the output bottleneck of the power amplifier but also reduces the gradual carbonization and decreasing damping coefficient caused by excessive current output from relays. It is also because the conventional low current capacity of relays (10A-20A) is abandoned that the reserve power can be fully utilized without becoming a bottleneck for power amplifier output. Therefore, the damping coefficient of the MK8900 power amplifier can also reach a huge value of 800. This special technology is currently only used in a small number of high-end power amplifiers in the industry.

The output power is limited by the output protection circuit. Transformers, power transistors, capacitors, etc. are all the basis for power reserve. The key to determining how much power can be output lies in the large current output conduction and disconnection of the output protection circuit. While providing protection, the more significant role is to limit and release the power output, determining the amount of power output. It's like the size of a faucet, which directly determines the size of the water flow.

Feature highlights of MK8900 2

Equipped with a complete machine core control and protection system, a computer-level integrated control module for the entire machine

The control brain platform of the MK8900 power amplifier integrates the function of mains filtering circuit.

The dynamic performance is like a mountain roar and a sea tsunami

The MK8900 power amplifier boasts powerful reserve power, featuring a total of 32 power tubes for dual channels, with a sufficient reserve of 4800W per channel. Supported by a large 1600W transformer, the MK8900 provides both ample and stable reserve power. The rated power is 300W (8Ω), 600W (4Ω), and 1200W (2Ω). The rated power can be used as a reference to determine whether the amplifier can drive a speaker. Whether it can drive a speaker well depends on its reserve power. Being able to drive and being able to drive to saturation are two different concepts, which are closely related to reserve power, transformers, capacitors, power tubes, and output protection channels.

The Pro version of MK8900 also upgrades with automatic switching between pure Class A and Class AB

This feature allows the MK8900Pro to maintain optimal sound performance in real-time. Pure Class A: When operating at low power and small dynamics, it stably maintains a pure Class A operating state, producing a mellow and pleasant sound with a rich tone, resembling the style of tube amplifiers. When playing small classical music, vocals, instrumental solos, and other types of music, it delivers exquisite clarity, with a thick bass, smooth and warm midrange, and crisp and clear highs with good layering.

Class A and B: When dealing with high power and large dynamics, the MK8900Pro will automatically switch to Class A and B operation, instantly increasing output power to easily handle the energy required for large dynamics. It has strong low-frequency control and instantly enhances the clarity and brightness of sound, making it particularly handy for large-scale symphony and drum music with large dynamics.

HI-END level leapfrog performance

MK8900 boasts a mature circuit design of HI-END level

Collaborating with British designers to craft a comprehensive design and a series of tuning parameters, the MK8900 achieves a quality and performance that elevates it to the HI-END category

For example: the signal-to-noise ratio of MK8900

The higher the signal-to-noise ratio (SNR), the lower the background noise, making it an important indicator of the power amplifier's performance. The design of the power amplifier circuit and the quality of the components used directly affect the SNR parameters, which manifest as background noise level and sound quality. Compared to the conventional SNR range of 90-110db, the MK8900 achieves an SNR of up to 120db. Every additional 1db in SNR requires doubled effort, and high standards result in a background as quiet as a black hole.

HiFi is the basic standard for high fidelity, marking the beginning of good sound quality. Hi-End, on the other hand, surpasses HiFi in terms of specifications and listening experience. The MK8900's high signal-to-noise ratio is rarely seen even in high-end power amplifiers at a very high price point.

High reserves and low load provide excellent listening experience

It can also perform smoothly under high energy consumption conditions

The MK8900Pro is equipped with 32 German IXYS field effect transistors. These power transistors produce even-order harmonics similar to those generated by electronic tubes during operation, giving the MK8900Pro a style very close to that of electronic tubes, especially in Class A operation, where it offers a softer, more delicate sound, pleasant to listen to for extended periods without fatigue. The MK8900 is equipped with 32 high-power field effect power transistors manufactured by a well-known American factory, with 16 on each of the left and right channels. The total current/power per channel is 800A/4800W. The output current is sufficient, with deeper low-frequency penetration, fullness, and weightiness, often found in high-priced foreign HI-END power amplifiers costing tens of thousands or more.

Power tubes play a crucial role in sound stability and quality performance. Every power tube has a maximum load power. For stable and good sound, it is essential to reduce the power distribution pressure borne by each power tube as much as possible, ensuring that each tube operates in its optimal state, rather than working under heavy or full load for extended periods.

The MK8900 and MK8900Pro only utilize about one-twentieth of their components for output, yet their stability, sound quality, and ultra-high configuration meet extremely high standards.

Selected 32 German IXYS and American high-power field effect transistors

The single-channel 4800W design endows the MK8900 with exceptional reserve power. Rigorous pairing ensures the linearity and consistency of the MK8900's power tube are highly matched. Coupled with a large transformer totaling 1600W, it can easily meet instantaneous burst demands, allowing the MK8900 to not only powerfully enhance and empower the speakers, but also deliver a powerful and immersive listening experience, while also exhibiting a delicate and gentle electronic tube style.

The MK8900Pro also features upgraded treble and bass adjustment/bypass

The treble and bass adjustments can cater to different needs for high and low frequencies, mitigating the adverse reflected sound during playback in non-acoustically treated spaces. This ensures a reasonable distribution of energy across the high, mid, and low frequencies, resulting in a more balanced, natural, clear, and pleasant sound.

A direct switch and an operational amplifier tuning circuit have been added, and a precision trimmer potentiometer from Japan's ALPS has been selected, resulting in minimal sound coloring and high fidelity.

Select OPA2604 dual operational amplifier

Analyze the acoustic feedback that is easy to understand at first listen

The MK8900 pre-amplifier utilizes two OPA2604 dual operational amplifiers as the main drivers, complemented by another OPA2604 dual operational amplifier as an auxiliary, one for each channel, to achieve the ideal sound effect of high resolution, high frequency bandwidth, and high transparency. The MK8900 operational amplifier boasts high performance specifications, featuring low harmonic distortion, low noise, and high gain bandwidth. It is a dedicated operational amplifier for high-performance audio systems.

Merely having a good Power Amp is insufficient. The sound resolution of the Pre serves as the foundation. Only when the Pre provides high-quality audio signals can the Power Amp deliver excellent sound effects when driving the speakers.

Brand-new listening experience, multi-effect expression of music styles

Due to the sufficient and well-matched performance of MK8900

Vocal, symphony, pop, instrumental music, light music, DJ, etc

All kinds of music styles can be easily mastered and presented with ease

Selection of upgraded output speakers for MK8900Pro

The MK8900pro power amplifier has two sets of outputs, A and B, which can be connected to two pairs of speakers simultaneously, and the speakers can be selected for playback

Selecting Group A will only play through Group A speakers, selecting Group B will only play through Group B speakers, selecting Group A+B will play through both Group A and Group B speakers simultaneously, and selecting OFF will disable playback through both Group A and Group B speakers. Switching between different speakers to experience different styles eliminates the hassle of manually changing cables, making it more convenient and user-friendly.

"Concealed yet powerful, with the might of a thunderbolt"

1600W total thermosetting resin encapsulated transformer

Customized two-unit imported ring-core pure copper thermosetting resin fully enclosed transformers with a total capacity of 1600W, featuring independent sealing for leak-proofness, shock absorption, noise reduction, and electromagnetic interference prevention. The sound channel system is powered independently, ensuring that each unit has a reserve power nearly several times higher than the required power, providing sufficient reserves for handling large dynamics, low frequencies, and power demands. It is ready to handle large dynamic signals with ease.

The transformer plays a crucial role in influencing sound quality. When large dynamic signals emerge, particularly significant bass peaks, the electrical energy output by the circuit primarily relies on the transformer, with only a portion provided by the filter capacitor. If the transformer's power is insufficient, the power supply voltage will drop during large dynamics, resulting in the attenuation of audio signals and causing distortion and a decline in auditory perception

The entire machine features a fully isolated and compartmentalized design across nine major cabins

Reduce electromagnetic interference through physical means

The MK8900Pro has undergone a major upgrade with a new structural layout, featuring 9 fully isolated compartments: an independent Pre compartment, an independent control compartment, 2 independent transformer compartments, 2 independent capacitor bank compartments, 2 independent power amplifier compartments, and an independent output compartment. Each compartment serves a distinct function, minimizing electromagnetic interference between different sections. This ensures that the MK8900Pro achieves maximum channel separation, akin to two mono amplifiers combined. The left and right channels are truly separated and non-interfering, resulting in precise soundstage positioning, clarity and transparency, excellent dynamic range, and distinct detail layers.

It has strong control over the sound system

The MK8900 damping coefficient is 800, which is also rare in high-end power amplifiers

The higher the numerical value, the better the control force and driving force. The damping coefficient is a performance parameter of MK8900 driving force and control force. The driving force refers to the reserve power, while the control force directly affects the distortion level and sound performance. For example, when the audio signal disappears, the control speaker will no longer continue its inertial motion, or the control speaker will vibrate in place without excessive or insufficient vibration, thus reducing distortion. The high damping coefficient of MK8900 can better control low frequencies and dynamic response, reduce coloration distortion of sound, and thus improve overall sound accuracy and fidelity.

The MK8900 Pro has also been upgraded with left and right channel balance adjustment

Different listening spaces may not achieve symmetrical left and right environments, symmetrical placement of speakers, and listening positions in the middle. The addition of left and right channel balance adjustment in MK8900 Pro can help listeners adjust the acoustic effect of left and right balance according to their own space and position, allowing you to personally control the subtle adjustments and obtain a more ideal balanced sound field, giving the sound a better sense of balance.

Exclusive high-capacity filter electrolytic capacitor array

Abundant energy storage to adapt to various changes

The capacitors used in MK8900 serve the functions of filtering and energy storage

It can make the voltage cleaner and reduce interference on the output signal

At the same time, the MK8900 capacitor has more energy reserves. When there is instantaneous high-power output (such as sudden heavy bass), the voltage of the MK8900 will not be instantly pulled down, which can significantly avoid the phenomenon of "inadequate power" in instantaneous dynamics. Moreover, the MK8900 circuit uses a capacitor array, which can further reduce internal resistance and discharge quickly,

While improving power supply stability, further enhance low-frequency response.

The MK8900Pro capacitor is made up of 160,000uF from 16 units of Japan  Elna  (FORAUDIO series 10000uF 80V5℃), while the MK8900 also reaches 120,000uF.

In every detail, ensure that each one excels in performance

MK8900Pro is upgraded with silent features and designed specifically for vinyl record players

Primarily designed for vinyl turntable setups, the MK8900Pro features a thoughtful mute function that eliminates stylus popping noise during record changes for vinyl enthusiasts. The mute function can also be used in other situations where silence is required.

Noise reduction and voltage maintenance circuit

Specially designed for precision circuits

Low internal resistance, stable voltage, low noise, and low output ripple effectively ensure the stable operation of the circuit and meet the instantaneous dynamic requirements.

Each channel is equipped with dual fuses designed specifically for safety protection

Single channel dual fuse design provides dual protection and improves safety factor. Share the current flow, increase current stability, and accurately control current protection.

JAPAN variable resistor

Specially equipped for high-quality audio

The MK8900 is equipped with high-quality variable resistors, which have a high degree of left and right uniformity and precise control of high-order amplifiers.

NEC audio input switching

Specially equipped for precision switching

The contact impedance is so small that it can be ignored. Pure mechanical switching causes less sound pollution, and the control uses a manual switch to drive the relay without touching the audio path

Specifications

Dimensions: W420mm H200mm L450mm (overall dimensions)

Overall weight: 28KG

Maximum output power: 300W x 2 (8Ω) 600W x 2 (4Ω)

Total harmonic distortion: 0.04% (2Ω load) 0.01% (4-16Ω load)

Intermodulation distortion: 0.001%

Damping coefficient: 800 (with 8-ohm load, 50 Hz)

Input impedance: Balanced input: 40KΩ RCA input: 20KΩ

Load resistance: 2-16Ω

Gain power: 40 db

Signal-to-noise ratio: 120 db

Power requirements: AC110V~220V 50/60Hz

Static power consumption: 50W-250W

Frequency response: At rated continuous average output, 20-20kHz (+0, -0.2db)

At 1 watt outpt20-20kHz (+0,-0.2db)

10-150kHz (+0,-3db)