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> 870A Stereo (Dual Mono) eindversterker


The MOON 870A Power Amplifier is a balanced differential dual-mono design that effortlessly outputs 300 watts into 8Ω and 600 watts into 4Ω. Transparency and soundstage are exceptional, despite this amplifier's high power rating. Ultimately, the 870A will mate seamlessly with any loudspeaker allowing it to reach its full sonic potential, regardless of its load. Several in-house developed advancements allow the MOON 870A, the most powerful 2-channel amplifier to date, to perform with both accuracy and grain-free character. These include (i) MOON output transistors, specifically designed for use in our amplifiers, providing tighter and more visceral bass performance, as well as unprecedented linearity thoughout the entire frequency spectrum; and (ii) our advanced "zero global feedback" circuit, commonly referred to as Lynx. Of course, both RS-232 and 12 Volt triggers for custom-install environments are included as well as a plethora of user selectable cosmetic options that are available at the time of purchase.

Significant Design Features
Full unsolicited RS-232 bidirectional feedback

Lynx circuitry which is a "no overall feedback" design resulting in genuine real-time amplification,
a more accurate musical reproduction with respect to tonality, virtually non-existent IMD and the
elimination of common phase errors resulting from feedback

Precision matched and fully decoupled proprietary MOON Bipolar output transistors with
unprecedented gain linearity resulting in improved bass response and even more accurate
sonic reproduction

Custom proprietary toroidal transformer design with lower magnetic, electrical and thermal
loss, yielding an improved power transfer and lower regulation factor. The result is increased
current speed and better dynamics

An oversized power supply

12 Volt trigger input/output for remote operation

"Class A" output to 5 watts for greater efficiency

A high damping factor yielding superior musical dynamics, improved signal speed and refined
refined timbre accuracy

A very short capacitor-free signal path for a faster transient response

Stable to any known speaker impedance

4-Layer PCBs with pure copper tracings for a much shorter signal path; This results in
greater sonic accuracy and a dramatically improved signal-to-noise ratio

Ultra rigid chassis construction to minimize the effects of external vibrations

Accurate matching of the very finest quality electronic components in a symmetrical circuit design

Designed to be powered up at all times for optimal performance

Low operating temperature for a longer than normal life expectancy.


Configuration: Dual Mono
Power Supply Transformers: 2 x 1,3kVA
Power Supply Capacitance: 240,000F
Class Of Operation:  A/AB
Design: Fully Balanced Differential to output stage
Input Impedance: 47,500 Ohm
Input Sensitivity: 1400mV
Output Device Type: Bipolars - 16 per channel
Output Power at 8Ω: 300 Watts per channel
Output Power at 4Ω: 600 Watts per channel
Output Power Bridged Mono at 8Ω: 1200 Watts
Frequency Response: 10Hz - 200kHz +0/-3dB
Output Impedance: 0.01 Ohm
Damping Factor (static): 800
Gain: 31dB
Signal-to-noise Ratio: > 106dB @ full power
Maximum Output Voltage: 58 Volts
Slew Rate: 42V/s
Maximum Current Peak: 72 amperes
Maximum Current Continuous: 30 amperes
Crosstalk @ 1kHz: -105dB
Intermodulation Distortion: Unmeasureable
THD (20Hz - 20kHz @ 1 watt) : < 0.015 %
THD (20Hz - 20kHz @ 500 watts): < 0.04 %
Power Consumption @ idle: 70 Watts
AC Power Requirements: 120V / 60Hz or 240V / 50Hz
Gewicht: 44 kg
Breedte: 476 mm
Hoogte: 190 mm
Diepte: 444 mm

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