The 641 is an Integrated Amplifier by MOON that delivers 125 watts x 2 channels into 8 ohms and 250 watts x 2 channels into 4 ohms. It was released in 2023. It is a 2-channel design using a Class A/B output stage. Speakers connect via Binding Post. Minimum impedance of 4 ohms makes the 641 compatible with a wide range of loudspeakers. MOON 641 has an MSRP of 11000$.
There are 2 MOON amplifiers in our database. Below you can see the main specs of these amps.
MOON Integrated Amplifier Series
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Performance Specs
One of the most important factors when deciding on an integrated amplifier is its power ratings and compatibility with your speaker's impedance requirements.The MOON 641 is rated at 125 watts RMS into 8-ohms. MOON provides this wattage at a THD (Total Harmonic Distortion) of 0.003% which is an important indicator of distortion at the given values (lower THD is better).
Here are the main highlights of its performance specs:
- 125 watts into 8-ohms (2 Hz-90 kHz) at 0.003%
- 250 watts into 4-ohms
- 4-ohms Min Impedance (allows compatibility with a wide range of loudspeakers)
- 109dB Signal to Noise Ratio
How loud will 125 watts actually play in your room? →
Wiring more than one pair of speakers to it? Check the load first →
Which speakers suit the MOON 641?
125 W into 8 ohms, 250 W into 4, rated down to 4 ohms.
We rank every passive speaker we cover against it on power, impedance safety and current
delivery.
When pairing the MOON 641 with a passive Bookshelf (Stand mount) or Passive Floor Standing (Tower) speaker, you have to check if their Max Power Range is below the max wattage of the amp for the given impedance levels.
Operating your amp outside of this max range may damage the speakers.
What size of room is the MOON 641 Amplifier good for?
An essential deciding factor is the size of the room in which you intend to employ the MOON 641 amplifier. Here, taking into account its maximum power parameters, we analyzed its applicability to various size environments:
| Listening Environment |
Suitability |
| Near-field | Poor |
| Small Room | Poor |
| Mid-size Room | Good |
| Large Room | Good |
| Very Large Room | Average |
Inputs and Outputs
Besides the performance specs of the MOON 641, the next important feature set that you have to evaluate is the input and output selections that it offers.
MOON 641 has total of 5 Analog inputs .
Inputs
- Total Number of Analog Inputs: 5
Outputs
Bluetooth Connectivity
MOON 641 doesn't have bluetooth connectivity feature. In order to stream your music via bluetooth, the easiest way is to connect an external bluetooth receiver to your MOON 641. Two bluetooth receivers that we recommend are the
iFi Zen Blue V2 and the
Audioengine B1.
Among the amps in the same price range, these are the 2 amps that have Bluetooth Connectivity:
MOON 641 External Dimensions and Weight
MOON 641 has external dimensions of (H x W x D) 4-1/16 x 18-15/16 x 18-5/16 inch (102.4 x 481.3 x 465.3 mm ). The unit weighs
26.08 kg (57.5 lbs).
Base Surface Area
Base surface area of an integrated amplifier may become an important decision factor when the space in your room or desk is limited.
The base area of the MOON 641 is approximately 2239.5cm2 / 347.1inch2.
- Width: 481.3mm (18-15/16")
- Height: 102.4mm (4-1/16")
- Depth: 465.3mm (18-5/16")
- Weight: 26.08 kg (57.5 lbs)
- Base Surface Area: ~2239.5cm2 / 347.1inch2
- Volume: ~22.9 liter / 6.1 gallon
Available colors
MOON 641 is available in Black and Silver color options.
| General |
| Brand |
MOON |
| Full Model Name |
MOON 641 |
| Release Date |
2023 |
| Amplifier Type |
Integrated Amplifier |
| Number of Channels |
2 |
| Amp Class |
Class A/B |
| Amplifier Technology |
Solid State |
| Performance |
| Watts RMS per Channel into 8-ohms |
125 watts |
| Watts RMS per Channel into 6-ohms |
N/A |
| Watts RMS per Channel into 4-ohms |
250 watts |
| Frequency Bandwidth |
2 Hz-90 kHz |
| Damping Factor |
700 |
| THD |
0.003% |
| Minimum Impedance |
4 |
| Signal to Noise Ratio |
109 dB |
| Digital Music |
| Built-in DAC |
No |
| Bluetooth |
No |
| WiFi |
No |
| CONNECTIONS |
| Total Analog Inputs |
5 |
| Headphone Output |
No |
| Removable Power Cord |
|
| Speaker Connectors |
Binding Post |
| PHYSICAL SPECS |
| Height |
102.4mm (4-1/16") |
| Width |
481.3mm (18-15/16") |
| Depth |
465.3mm (18-5/16") |
| Weight |
26.08 kg (57.5 lbs) |
| Available Colors |
Black,Silver |
| OTHER |
| Parts Warranty |
|
| Labor Warranty |
|
|
Model |
Watts RMS (8-ohms) |
Minimum Impedance |
Built-in DAC |
Phono Stage |
 |
MOON 250i v2
Compare
|
50 watts | 4-ohms | No | MM |
How much power does the MOON 641 have?
The MOON 641 delivers 125 watts x 2 channels into 8 ohms and 250 watts x 2 channels into 4 ohms. Its output almost doubles into 4 ohms, which points to a strong power supply that can hold its composure with demanding, low-impedance speakers.
Does the MOON 641 use vacuum tubes?
No. The MOON 641 is a solid-state amplifier - there are no vacuum tubes in it.
What amplifier class is the MOON 641?
The MOON 641 uses a Class A/B amplifier design. Class A/B is the traditional linear design: it runs warmer and is less efficient than Class D, but it is long valued for its natural, low-distortion sound.
Does the MOON 641 have a built-in DAC?
No. The MOON 641 has no built-in DAC, so a digital source such as a streamer or CD transport needs its own converter, or you connect it over analogue.
Does the MOON 641 have Bluetooth?
No. The MOON 641 does not have Bluetooth built in; you would need an external Bluetooth receiver connected to one of its inputs.
Does the MOON 641 have a headphone output?
No. The MOON 641 does not have a headphone output, so headphone listening needs a separate headphone amplifier.
How much does the MOON 641 cost?
The MOON 641 has a manufacturer's list price (MSRP) of $11,000.
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