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The MOON 861 Power Amplifier delivers reference-grade dual-mono performance with 300 W per channel into 8 ohms and 600 W per channel into 4 ohms for effortless speaker control. Its MDCA distortion-cancelling architecture and no global feedback design keep noise and distortion extremely low for a stable, high-resolution soundstage. Massive power resources—dual 900 VA toroidal transformers and 240,000 µF of capacitance—provide clean dynamics, tight bass, and uncompressed peaks. With RCA/XLR inputs, stereo/mono bridging, MOONLink, and advanced standby options, the 861 integrates seamlessly into elite separates systems.
Get the Details
Provides the current delivery and control needed for real-world loudspeaker loads, preserving dynamics and composure at higher volumes.
MDCA (MOON Distortion-Cancelling Amplifier)
Engineered to suppress distortion and noise so fine detail stays intact and the presentation remains clean, open, and stable.
No global feedback topology
Prioritizes natural timing, clarity, and consistency, helping the amplifier avoid glare while maintaining authority and grip.
Overbuilt power supply (2 × 900 VA transformers, 240,000 µF capacitance)
Delivers strong transient impact and headroom for complex passages, keeping low frequencies tight and dynamic peaks effortless.
Stereo/mono flexibility (800 W mono into 8 Ω)
Lets you run a single amplifier in stereo or bridge it for monoblock operation when you want even more output capability per channel.
System integration tools (RCA/XLR, MOONLink, triggers, standby options)
Balanced/unbalanced input switching, MOONLink coordination, 12V trigger I/O, and standby mode controls make the 861 easy to deploy in refined multi-component systems.
Provides the current delivery and control needed for real-world loudspeaker loads, preserving dynamics and composure at higher volumes.
MDCA (MOON Distortion-Cancelling Amplifier)
Engineered to suppress distortion and noise so fine detail stays intact and the presentation remains clean, open, and stable.
No global feedback topology
Prioritizes natural timing, clarity, and consistency, helping the amplifier avoid glare while maintaining authority and grip.
Overbuilt power supply (2 × 900 VA transformers, 240,000 µF capacitance)
Delivers strong transient impact and headroom for complex passages, keeping low frequencies tight and dynamic peaks effortless.
Stereo/mono flexibility (800 W mono into 8 Ω)
Lets you run a single amplifier in stereo or bridge it for monoblock operation when you want even more output capability per channel.
System integration tools (RCA/XLR, MOONLink, triggers, standby options)
Balanced/unbalanced input switching, MOONLink coordination, 12V trigger I/O, and standby mode controls make the 861 easy to deploy in refined multi-component systems.
Expert Insight
Paired with equipment of comparable value, I believe that a bridged pair of Moon 861 stereo amplifiers will deliver reward after reward and thrill after thrill. If other amplifiers in their price range can deliver experiences as involving, satisfying, and emotionally potent, I have yet to hear them. Most highly recommended.
Jason Victor Serinus
stereophile
Details
MOON 861 Power Amplifier
The MOON 861 Power Amplifier is a reference-grade, dual-mono stereo power amp engineered to deliver effortless control, deep dynamic headroom, and ultra-low noise in high-resolution systems. With 300 W per channel into 8 Ω and 600 W per channel into 4 Ω, it drives demanding loudspeakers with calm authority, preserving a stable soundstage and fast transient response even at realistic listening levels. Built around MOON’s MDCA (MOON Distortion-Cancelling Amplifier) architecture and a no global feedback design, the 861 focuses on vanishingly low distortion and clean, uncompressed power delivery. Two custom low-noise toroidal transformers (900 VA each) and massive power supply capacitance (240,000 µF) support wide dynamic swings, while premium connectivity—RCA/XLR inputs, stereo/mono operation, MOONLink coordination, and smart standby modes—makes it easy to integrate into elite separates systems. The Moon 861 is part of ListenUp's Moon Power Amplifier Collection.
Fuse: Internal fuse magazine for power supply fuse
Fuse rating (120 V / 240 V): F 15A H 250V 3AG / F 8A H 250V 3AG
Dimensions (W × H × D): 18.95 × 8.26 × 24 in (48.1 × 21 × 60.9 cm)
Dimensions (L × H × D): 48.1 cm × 21.0 cm × 60.9 cm / 18.95 in × 8.26 in × 24.0 in
Shipping weight: 155 lbs / 70 kg
Shipping weight: 57 kg / 125 lbs
In the box: Owner’s manual, AC power cable, 1 spare fast-blow fuse, MOONLink, warranty/registration information (USA and Canada only)
In the box (also listed): Quick Start Guide, Power Cable, Ethernet Cable, Warranty Registration Card (Canada & USA only)
MOON 861 Q&A:
What speakers can the MOON 861 drive effectively?
With 300 W per channel into 8 Ω and 600 W per channel into 4 Ω, the MOON 861 is built for demanding loudspeakers and large rooms, delivering high-current control and strong dynamic headroom.
Does the MOON 861 support mono (bridged) operation?
Yes. A rear-panel stereo/mono switch allows the 861 to bridge into mono operation, delivering 800 W into 8 Ω for monoblock-style setups.
What input connections does the MOON 861 provide?
It includes both balanced XLR and unbalanced RCA inputs, plus a BAL./UNBAL. switch to select the active input type.
What is MDCA and why does it matter?
MDCA (MOON Distortion-Cancelling Amplifier) is designed to reduce distortion and noise to extremely low levels, helping the amplifier sound clean, stable, and controlled even at high output.
How much power does the MOON 861 use in standby?
Low Power Standby is rated at 1.25 W, and Full Power Standby is listed at 75 W, giving you flexibility between efficiency and faster “ready” performance.
Can the MOON 861 coordinate power/standby with other MOON components?
Yes. It includes MOONLink connectivity and also supports 12V trigger in/out for synchronized standby behavior across multiple components.
Is there a way to block DC from upstream components?
Yes. The AC/DC Coupling switch can enable DC blocking, which is useful if a preamp outputs DC or if the amplifier frequently triggers DC protection.
What comes included in the box?
Documentation (owner’s manual/quick start), a power cable, MOONLink, a spare fast-blow fuse, and warranty/registration materials (with some items varying by region listing).
The MOON 861 Power Amplifier delivers reference-grade dual-mono performance with 300 W per channel into 8 ohms and 600 W per channel into 4 ohms for effortless speaker control. Its MDCA distortion-cancelling architecture and no global feedback design keep noise and distortion extremely low for a stable, high-resolution soundstage. Massive power resources—dual 900 VA toroidal transformers and 240,000 µF of capacitance—provide clean dynamics, tight bass, and uncompressed peaks. With RCA/XLR inputs, stereo/mono bridging, MOONLink, and advanced standby options, the 861 integrates seamlessly into elite separates systems.
Get the Details
Provides the current delivery and control needed for real-world loudspeaker loads, preserving dynamics and composure at higher volumes.
MDCA (MOON Distortion-Cancelling Amplifier)
Engineered to suppress distortion and noise so fine detail stays intact and the presentation remains clean, open, and stable.
No global feedback topology
Prioritizes natural timing, clarity, and consistency, helping the amplifier avoid glare while maintaining authority and grip.
Overbuilt power supply (2 × 900 VA transformers, 240,000 µF capacitance)
Delivers strong transient impact and headroom for complex passages, keeping low frequencies tight and dynamic peaks effortless.
Stereo/mono flexibility (800 W mono into 8 Ω)
Lets you run a single amplifier in stereo or bridge it for monoblock operation when you want even more output capability per channel.
System integration tools (RCA/XLR, MOONLink, triggers, standby options)
Balanced/unbalanced input switching, MOONLink coordination, 12V trigger I/O, and standby mode controls make the 861 easy to deploy in refined multi-component systems.
Provides the current delivery and control needed for real-world loudspeaker loads, preserving dynamics and composure at higher volumes.
MDCA (MOON Distortion-Cancelling Amplifier)
Engineered to suppress distortion and noise so fine detail stays intact and the presentation remains clean, open, and stable.
No global feedback topology
Prioritizes natural timing, clarity, and consistency, helping the amplifier avoid glare while maintaining authority and grip.
Overbuilt power supply (2 × 900 VA transformers, 240,000 µF capacitance)
Delivers strong transient impact and headroom for complex passages, keeping low frequencies tight and dynamic peaks effortless.
Stereo/mono flexibility (800 W mono into 8 Ω)
Lets you run a single amplifier in stereo or bridge it for monoblock operation when you want even more output capability per channel.
System integration tools (RCA/XLR, MOONLink, triggers, standby options)
Balanced/unbalanced input switching, MOONLink coordination, 12V trigger I/O, and standby mode controls make the 861 easy to deploy in refined multi-component systems.
Expert Insight
Expert Insight
Paired with equipment of comparable value, I believe that a bridged pair of Moon 861 stereo amplifiers will deliver reward after reward and thrill after thrill. If other amplifiers in their price range can deliver experiences as involving, satisfying, and emotionally potent, I have yet to hear them. Most highly recommended.
Jason Victor Serinus
stereophile
Details
Details
MOON 861 Power Amplifier
The MOON 861 Power Amplifier is a reference-grade, dual-mono stereo power amp engineered to deliver effortless control, deep dynamic headroom, and ultra-low noise in high-resolution systems. With 300 W per channel into 8 Ω and 600 W per channel into 4 Ω, it drives demanding loudspeakers with calm authority, preserving a stable soundstage and fast transient response even at realistic listening levels. Built around MOON’s MDCA (MOON Distortion-Cancelling Amplifier) architecture and a no global feedback design, the 861 focuses on vanishingly low distortion and clean, uncompressed power delivery. Two custom low-noise toroidal transformers (900 VA each) and massive power supply capacitance (240,000 µF) support wide dynamic swings, while premium connectivity—RCA/XLR inputs, stereo/mono operation, MOONLink coordination, and smart standby modes—makes it easy to integrate into elite separates systems. The Moon 861 is part of ListenUp's Moon Power Amplifier Collection.
Fuse: Internal fuse magazine for power supply fuse
Fuse rating (120 V / 240 V): F 15A H 250V 3AG / F 8A H 250V 3AG
Dimensions (W × H × D): 18.95 × 8.26 × 24 in (48.1 × 21 × 60.9 cm)
Dimensions (L × H × D): 48.1 cm × 21.0 cm × 60.9 cm / 18.95 in × 8.26 in × 24.0 in
Shipping weight: 155 lbs / 70 kg
Shipping weight: 57 kg / 125 lbs
In the box: Owner’s manual, AC power cable, 1 spare fast-blow fuse, MOONLink, warranty/registration information (USA and Canada only)
In the box (also listed): Quick Start Guide, Power Cable, Ethernet Cable, Warranty Registration Card (Canada & USA only)
MOON 861 Q&A:
What speakers can the MOON 861 drive effectively?
With 300 W per channel into 8 Ω and 600 W per channel into 4 Ω, the MOON 861 is built for demanding loudspeakers and large rooms, delivering high-current control and strong dynamic headroom.
Does the MOON 861 support mono (bridged) operation?
Yes. A rear-panel stereo/mono switch allows the 861 to bridge into mono operation, delivering 800 W into 8 Ω for monoblock-style setups.
What input connections does the MOON 861 provide?
It includes both balanced XLR and unbalanced RCA inputs, plus a BAL./UNBAL. switch to select the active input type.
What is MDCA and why does it matter?
MDCA (MOON Distortion-Cancelling Amplifier) is designed to reduce distortion and noise to extremely low levels, helping the amplifier sound clean, stable, and controlled even at high output.
How much power does the MOON 861 use in standby?
Low Power Standby is rated at 1.25 W, and Full Power Standby is listed at 75 W, giving you flexibility between efficiency and faster “ready” performance.
Can the MOON 861 coordinate power/standby with other MOON components?
Yes. It includes MOONLink connectivity and also supports 12V trigger in/out for synchronized standby behavior across multiple components.
Is there a way to block DC from upstream components?
Yes. The AC/DC Coupling switch can enable DC blocking, which is useful if a preamp outputs DC or if the amplifier frequently triggers DC protection.
What comes included in the box?
Documentation (owner’s manual/quick start), a power cable, MOONLink, a spare fast-blow fuse, and warranty/registration materials (with some items varying by region listing).
In Store Only
