I am selling my very uniqe, rare and limited Victor AX - M9000 monoaural intergarted aplifires from my vintage hifi collection. It is very uniqe becuase of it's Unique Dual-Section Integrated Monoblock Concept which operates in Super A Class with huge power up to 800 W in 2 Ohms. I used it many years to power with ease lots of different power hungry speakers. They just sound amaizing with a all the good sides of A class but with huge power. It is considered High Ende before High End.
It costed 7500 DM per monoblock in 2001!!!
It was Japan only produced so I powerful stepdown transformer with it. I prefer personal transaction with hearing first, but if not possible video call is ok. If needs to shippnig I will pack it very well , with double card box and air bubbles and styro foam.

Here are description compiled from some Japnese Hi End sites:

Victor AX-M9000 Monaural Integrated Super A Class High End Power Amplifier
The Victor AX-M9000 is one of the most unusual and technically fascinating amplifiers ever produced by Victor Company of Japan (JVC). Unlike conventional integrated amplifiers, the AX-M9000 is a monaural integrated amplifier, meaning that each unit handles only one channel, combining both preamplifier and power amplifier sections within a single chassis. This rare architecture places it in a unique category between traditional integrated amplifiers and true monoblock high-end systems.
Unique Dual-Section Integrated Monoblock Concept
What makes the AX-M9000 truly exceptional is its dual-stage architecture inside each mono unit. Essentially, each amplifier contains a dedicated preamplifier stage and a high-power output stage operating independently but optimized for current-mode signal transmission. Victor implemented its advanced Gm volume system, which converts the signal into current rather than relying purely on voltage control. This dramatically improves signal integrity, reduces noise, and enhances dynamic precision.
This design philosophy delivers the sonic benefits of fully separated pre- and power amplifiers while maintaining the direct signal path advantages of an integrated amplifier. It also ensures extremely low crosstalk, superior channel separation, and exceptional stereo imaging when two units are used as a stereo pair.

Amplifier Class and Circuit Topology
The Victor AX-M9000 features Victor’s proprietary Advanced Super A amplifier technology, which represents a highly refined evolution of traditional Class A amplification. Unlike conventional Class AB designs, the Advanced Super A circuit has been thoroughly re-engineered to eliminate driver current distortion in the final output stage, allowing the amplifier to operate with characteristics very close to pure Class A operation while maintaining far greater efficiency.
This advanced topology ensures that the output devices remain in their optimal linear region during operation, significantly reducing crossover distortion and preserving signal purity. As a result, the AX-M9000 delivers the sonic smoothness, transparency, and micro-detail typically associated with true Class A amplifiers, but with the power capability and efficiency of a high-performance solid-state design.
A key component of this system is the Advanced Gm Volume, which combines a precision volume control device with a transconductance (Gm) volume circuit. Because transistors are inherently current amplification devices, this system provides optimal control in fully balanced operation. The signal voltage is amplified only as much as necessary, then converted into current and transmitted directly to the power amplifier stage.
This current-mode signal transmission offers several critical advantages:

• Significant reduction of signal line noise
• Improved signal integrity and linearity
• Faster transient response
• Greater dynamic accuracy and resolution

Additionally, the AX-M9000 features an independent rectifier and power supply architecture that allows the power amplifier to deliver extremely high current directly to the output stage. This enables exceptional dynamic performance, with up to 800 watts of dynamic power into 2 ohms, ensuring effortless control over even the most demanding loudspeaker loads.
Thanks to its Advanced Super A design, fully balanced current-mode architecture, and extremely high current capability, the AX-M9000 achieves the rare combination of Class A sonic purity, massive power reserves, and ultra-low distortion—placing it firmly among true high-end reference amplifiers.

Why It Is Considered High-End
Several factors elevate the AX-M9000 into the high-end category:
1. True dual mono architecture
Each channel is completely independent, with separate amplification circuitry, power supply, and signal path. This eliminates channel interference and maximizes stereo imaging precision.
2. Current-mode signal transmission
Victor’s advanced current-based amplification system improves transient response, reduces noise, and enhances musical realism.
3. Exceptional power and control
With 240 W per mono unit and massive current reserves, the amplifier can drive even the most difficult speaker loads with ease.
4. Ultra-wide bandwidth and low distortion
Its extended frequency range and extremely low distortion ensure transparency and accurate reproduction of micro-details.
5. Rare and uncompromising design philosophy
Originally priced at approximately 7,500 DM per monoblock, the AX-M9000 was positioned firmly in the high-end segment.

Sound Quality
Sonically, the AX-M9000 delivers an authoritative yet refined presentation. The bass is exceptionally tight and controlled, the midrange is transparent and natural, and the treble is detailed without harshness. Its dual-mono integrated design results in a wide, holographic soundstage with excellent instrument separation and depth.
The amplifier combines the power and control of a dedicated monoblock power amplifier with the signal purity of a minimalist integrated design—an extremely rare and desirable combination.

Conclusion
The Victor AX-M9000 is a masterpiece of Japanese high-end engineering. Its unique monaural integrated architecture, advanced current-mode design, and exceptional power capability place it among the most technically sophisticated and sonically impressive amplifiers of its era.
It represents a rare bridge between integrated amplifiers and true high-end monoblock systems—offering uncompromising performance, outstanding build quality, and reference-level sound reproduction.