Simaudio MOON Evolution 880M Mono Flagship Power Amplifiers - Tested at 1000W

Free Shipping on *ALL* Electronics (Excluding Speakers, Contiguous 48 US States Only)

One owner pair of 880M initially sold in 2018 and used for around 30 hrs.

Complete with all accessories and paperwork.

Tested in our lab to about 1000W, the limit of our test gear.

In gorgeous condition with little signs of use.

$42,000 MSRP.

These will ship securely packed and strapped on a pallet for safe transport anywhere in the world. If you're outside of the lower 48 US States please contact us for a quote. Freight within the lower 48 US States is added at checkout.

Sterophile Review:

https://www.stereophile.com/content/simaudio-moon-evolution-880m-monoblock-power-amplifier

Brochure:

https://simaudio.com/wp-content/uploads/2018/04/25_en_detail_v_power-amplifier.pdf

Manual:

https://simaudio.com/wp-content/uploads/2018/03/880M_Manual_EN.pdf

More from Simaudio:

The MOON 880A Power Amplifier is a fully balanced differential mono design with both exceptional transparency and remarkable soundstage, despite its mammoth output power rating. Ultimately, the 880M 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 880M to perform with both exceptional accuracy and a 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; (ii) our advanced “zero global feedback” circuit, commonly referred to as Lynx; and (iii) an over-sized power supply featuring 2 massive custom proprietary toroidal transformers for an improved power transfer and lower regulation factor, resulting in increased current speed and superior dynamics.

Pairing the MOON 880M with the 850P Preamplifier creates an unrivalled, ultra-high performance and genuine “reference-grade” package. Of course, the key features you would expect from a MOON Evolution series power amplifier are present such as an RS-232 port and 12 Volt triggers for custom-install environments.

Significant Design Features:

• Our “Lynx” Technology which eliminates feedback and results in: Real-time amplification; More accurate musical reproduction with respect to tonality; Non-existent transient intermodulation distortion; The elimination of phase errors resulting from feedback.
• Output stable to any known speaker impedance.
• “Class A” power output to 10 watts for greater efficiency.
• A very high damping factor for superior musical dynamics,
• improved signal speed and refined timbre accuracy.
• Self-diagnostic system that detects both over-heating
• and the presence of DC in the input signal.

Recommended Cables:

Kimber Kable - RCA Interconnects - Best

Kimber Kable - BALANCED XLR Connectors - Best

Kimber Summit Series Monocle XL Speaker Cables (PAIR) - Best

Kimber Summit Series BiFocal XL Bi-Wire Speaker Cables (PAIR) - Best If Applicable 

Kimber Kable - Power Cords - Better

Kimber Kable - Power Cords - Best

Specifications
Configuration:
Fully Balanced Differential, Mono

Power Supply Transformer:
2 x 1.3kVA

Power Supply Capacitance:
260,000μF

Class Of Operation:
A/AB

Input Impedance:
47,500Ω

Input Sensitivity:
2250mV

Output Device Type:
MOON Bipolars – 32

Output Power @ 8Ω:
800 W per channel

Output Power @ 4Ω:
1600 W per channel

Frequency Response:
10Hz - 200kHz +0/-3dB

Gain:
31dB

Signal-to-noise Ratio:
106dB @ full power

Intermodulation Distortion:
0.006%

Total Harmonic Distortion (20Hz-20kHz @ 1W):
0.015%

Total Harmonic Distortion (20Hz-20kHz @ 800W):
0.04%

Power Consumption @ idle:
48W

AC Power Requirements:
120V / 60Hz or 240V / 50Hz

Shipping Weight - Each Amplifier:
144lb/65kg

Dimensions (W x H x D, inches / cm) - Each Amplifier:
18.75" x 7.5" x 17.5" / 47.6 x 19.1 x 44.5cm

Balanced Pin Assignment:
Pin 1 -> Ground
Pin 2 -> Positive
Pin 3 -> Negative

If you require the IR or RS-232 codes for the MOON 880M, please visit the “Contact Us” section in the support page on our website at www.simaudio.com.

The SkyFi Testing Process for Solid State Amplifiers:

We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect the PCBs for discoloration from resistors or transistors that may have been running hot. On vintage units we often spot check select capacitors for value and ESR.

If the amplifier passes visual inspection, we move on to a controlled power on sequence using a Sencore safety analyzer to monitor current draw in real time. Once the amplifier is determined to be safe to operate, we connect it to full AC mains for function and power testing. We connect the speaker outputs of the amplifier to a Sencore PA81 Power Analyzer which acts as a dummy load, DC offset monitor, and oscilloscope interface. We start with a low level 1KHz test signal at the amplifier’s input and slowly increase its amplitude while monitoring the output on an oscilloscope for signs of noise, clipping, distortion, or improper channel balance. We continue increasing the signal level until the amplifier reaches clipping. At this point we take an output power measurement and compare it to the spec sheet of the amplifier to verify proper performance. If the device under test has both balanced and single ended inputs they are both tested at this time. We finish off the bench evaluation with a 1KHz square wave check and a 20Hz to 20KHz sine sweep to assess the amplifier’s frequency response characteristics. This battery of tests will usually reveal if the amplifier has any issues that need further attention.

Before the device leaves the bench, we perform a listening test with actual music using a variety of preferred test tracks. Our benches are outfitted with familiar monitor speakers which help us identify inconsistencies that will not always show up on our test gear. The main things that we are listening for are hum or noise with no signal present, proper center image, clicks, pops, or any other obvious undesirable audio characteristics.

If the unit passes all of these tests it is moved to our long term testing rig where we simulate real word operating conditions for 6-8 hours. This allows us to monitor the unit for signs of thermal runaway or intermittent issues that only crop up when the unit has fully come up to temperature.