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Mission 777

Stereo Power Amplifier

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Mission 777


The Mission amplifier designs are the result of a new look at the fundamental parameters and basic operating functions of an audio amplifier. Our research has been painstaking in careful evaluation and correlation of subjective results with advanced and novel measurements.

Considerable effort was made to create inherently stable circuit designs capable of driving all complex loads and eliminating conventional protection circuits, Zobel networks, coupling capacitors, etc. The 777 achieves the unprecedented open-loop bandwidth of 230KHz resulting in 1.15 MHz bandwidth with a mere 14dB overall feedback!

Discrete components are used throughout, switches and connectors kept to a bare minimum. Exceptionally low output impedance power supply is utilized with some 70,000 uF of filtering capacity. A totally linear harmonic distortion pattern is achieved with rapidly diminishing high order harmonics. Complex distortions measured over a large frequency band are negligible.

The slewing rate of the 777 is a staggering 180 Volts per micro second, thereby eliminating all dynamically induced distortions such as TIM, with special attention given to slewing behaviour at maximum output swings.

The 777 is DC coupled throughout, designed as a perfectly symmetrical class A amplifier, except for the high technology H-FET output devices which operate in class AB mode.

The sonic superiority of this product is immediately audible in its clean and exciting dynamic range - permitting amplification of musical transients without clipping! To rate the 777 as a 200W amplifier, therefore, does not do justice to its transient capabilities - more suitably rated in kilowatts.


Power output: 100 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.2%

Damping factor: 60

Input sensitivity: 0.775V

Signal to noise ratio: 100dB


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This website is not affiliated with or sponsored by Mission. To purchase 777 spares or accessories, please contact the company via their website or visit an authorised retailer.