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Simaudio MOON 600i Integrated Amplifier V1
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The MOON 600i redefines the capabilities of an Integrated Amplifier. A fully balanced differential, dual-mono design, it produces the most potent 125 watts/ch. @ 8 ohms you will ever experience. RETAIL: $9,000.


The MOON 600i Integrated Amplifier is designed to continue where the award winning MOON i-7 left off. Intended to meet the needs of the most demanding music connoisseurs, it is fully differential dual-mono design, rated at 125 watts/channel into 8 ohms, offering authority, finesse and superb control. Using a variety of new technologies developed since the introduction of the Evolution Series, the MOON 600i provides more sonic transparency and accuracy than ever before.

New technologies include (i) the M-eVOL2 volume control, with a phenomenal 530 steps, allowing for an extremely precise level adjustment just like the MOON P-8 Preamplifier; (ii) New MOON output transistors, specifically designed for use in our amplifiers, provide tighter and more visceral bass performance, as well as unprecedented linearity thoughout the entire frequency spectrum; (iii) An input stage circuit which reduces noise, preserving image focus and integrity like never before. Although rated at “only” 125W per channel, the 600i embodies both authority and finesse at all levels that suggests a much more powerful amplifier, just like all MOON products before it.

Rock-solid reliability, extreme flexibilty and a luxurious lifestyle

Of course, key features you’d expect in a MOON Evolution Series products are present such as our revolutionary Lynx amplification circuitry, SimLink and M-Lock, just to name a few, as well as both RS-232 and IR ports for custom-install environments. Finally, a plethora of user selectable cosmetic options are available at the time of purchase.


Significant Design Features:

· RS-232 port for (i) full unsolicited bidirectional feedback and (ii) firmware updates
· IR input for external control
· 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 intermodulation distortion and the elimination of common phase errors
resulting from feedback
· 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 dual-mono power supply
· SimLink controller port allows for 2-way communications between other compatible
MOON Evolution Series components
· M-eVOL2 volume control circuit using MDAC’s (operating in a current steering R-2R
configuration) which alter the audiio signal’s amplitude yielding no sonic degradation
of the signal, regardless of the selected volume setting
· Proprietary MOON Bi-Polar output transistors with unprecedented signal linearity
and ultra-low noise characteristics
· M-Lock for “user selectable” maximum volume setting lock-out for each line input
· “Gain offset” for each individual line input with a ±10dB range
· Each line input is fully configurable to be “home-theater ready”, where the gain
section of the 600i is bypassed
· 530 individual volume steps in 1dB and 0.1dB increments
· An exceptionally short signal path , yielding a much faster transient response
· 12 Volt trigger output for remote operation
· "Class A" output to 5 watts for greater efficiency
· Four-layer PCB tracings; Layers 1 and 3 for the audio signals, layer 2 for the ground
plane and the bottom layer for power supplies. The advantages include better
ground and power supply circuit layouts resulting in a much shorter signal path
and 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
· Improved reliabilty through the elimination of moving parts
· Low operating temperature for a longer than normal life expectancy.


Type Solid State
Configuration Dual-Mono / Balanced
Class of operation - Amplifier A/AB
Single Ended Inputs (RCA) 4 pairs
Balanced Inputs (XLR) 1 pair
Input Sensitivity 490mV - 6.0V RMS
Input Impedance 23,700 Ù
Monitor Loop none
Variable / Fixed Line Output – switchable 1 pair @ 50 Ù (RCA)
Output Device Types - Amplifier Proprietary MOON BiPolars - 6 per channel
Output Binding Posts Gold-plated WBT
Output Power @ 8 Ù 125 Watts per channel
Output Power @ 4 Ù 250 Watts per channel
Output Impedance 0.03 Ù
Damping Factor > 267
Volume Steps 0.5 dB from 0-30 and 0.1dB from 30-80
Gain Control M-eVOL2
Gain 37dB
Signal-to-noise Ratio - Preamplifier 120dB (20Hz-20kHz)
Signal-to-noise Ratio - Amplifier 105dB @ full power
Maximum Output Voltage 35 Volts
Slew Rate 35V/µs
Maximum Current - Peak 30 amperes
Maximum Current - Continuous 18 amperes
Frequency Response 10Hz - 100kHz (+0/-3dB)
Crosstalk @ 1kHz -100dB
IMD unmeasurable
THD (20Hz - 20kHz @ 1 watt) < 0.015%
THD (20Hz - 20kHz @ 175 watts) < 0.04%

12 Volt Trigger Output Operation

Direct Logic (0V = off, 12V=on) using a 3.5mm
mono microphone jack with an output impedance
of 1000 Ù and current requirement of 12mA
SimLink Port 1 input + 1 output each on 1/8" mini-jack
RS-232 Port 9-pin female DB connector
IR input 1/8" mini-jack

Remote Control All-Aluminum Full Function
Display Type 8 character dot matrix LED
Power Consumption @ idle 45 Watts
AC Power Requirements 120V / 60Hz 240V / 50Hz
Fuse Replacement - 120V 6.0A long fast blow
Fuse Replacement - 230V 3.0 long fast blow
Shipping weight 48 lbs / 21 kgs
Dimensions (w x h x d) 18.8 x 4.0 x 18.1 in.