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The Rotel RMB-1555 is a high-current 5-channel Class AB power amplifier designed for powerful, controlled home theater and multichannel audio performance. It delivers 120 watts per channel into 8 ohms with all five channels driven, plus 170 watts per channel into 4 ohms for demanding speakers. Premium engineering—like a robust toroidal power supply and discrete output design—supports low distortion, wide bandwidth, and confident dynamics. With 12V trigger control and optional rack ears, it’s an installation-friendly upgrade for serious surround systems.
Get the Details
Features & Specs
True 5-Channel Power for Surround Systems
Provides consistent output across all channels, helping maintain balanced dynamics and clarity in full home theater speaker layouts.
Conservatively Rated Output with 4Ω Capability
Delivers 120W/ch into 8Ω (all channels driven) and steps up to 170W/ch into 4Ω, giving extra current and control for tougher speaker loads.
Class AB Design for Clean Power and Efficiency
Class AB topology is chosen for a refined blend of musical detail and real-world thermal efficiency, making it ideal for extended movie sessions.
A robust transformer and discrete output transistors help the amplifier stay composed during sudden peaks, keeping bass tight and transient impact convincing.
Low Distortion, Wide Bandwidth Performance
With <0.03% THD/IMD and a 10Hz–100kHz frequency response, the RMB-1555 preserves detail, separation, and natural tonal balance across the spectrum.
Installer-Friendly Control and Connectivity
12V trigger in/out supports automated power control with your processor, while sturdy binding posts, detachable IEC power connection, and optional rack ears simplify clean, reliable installs.
True 5-Channel Power for Surround Systems
Provides consistent output across all channels, helping maintain balanced dynamics and clarity in full home theater speaker layouts.
Conservatively Rated Output with 4Ω Capability
Delivers 120W/ch into 8Ω (all channels driven) and steps up to 170W/ch into 4Ω, giving extra current and control for tougher speaker loads.
Class AB Design for Clean Power and Efficiency
Class AB topology is chosen for a refined blend of musical detail and real-world thermal efficiency, making it ideal for extended movie sessions.
A robust transformer and discrete output transistors help the amplifier stay composed during sudden peaks, keeping bass tight and transient impact convincing.
Low Distortion, Wide Bandwidth Performance
With <0.03% THD/IMD and a 10Hz–100kHz frequency response, the RMB-1555 preserves detail, separation, and natural tonal balance across the spectrum.
Installer-Friendly Control and Connectivity
12V trigger in/out supports automated power control with your processor, while sturdy binding posts, detachable IEC power connection, and optional rack ears simplify clean, reliable installs.
Expert Insight
As a Rotel owner I can honestly say that I get a very high-end sound without paying a high-end price!
Michael Chapman
Brand Manager-ListenUp
Details
Rotel RMB-1555 Five Channel Power Amplifier
The Rotel RMB-1555 is a high-current 5-channel Class AB power amplifier built to bring effortless dynamics, tight control, and refined detail to serious home theater and multichannel music systems. Conservatively rated at 120 watts per channel into 8 ohms with all five channels driven, it delivers the confident headroom and clarity you want for impactful movie soundtracks and lifelike surround playback—without strain. A robust toroidal transformer, discrete output transistors, and premium internal components help the RMB-1555 maintain composure during demanding scenes, keeping dialogue crisp, effects expansive, and bass clean and authoritative. From premium speaker binding posts to 12V trigger control and optional rack ears, it’s engineered as a reliable, installation-friendly powerhouse for medium to large rooms.
Inputs: RCA (unbalanced) multichannel analog inputs
Input Sensitivity: 1.5V
Input Impedance: 12kΩ
Speaker Terminals: Heavy-duty binding posts (supports bare wire, spade lugs, or dual banana plug connections; banana use may be restricted in some regions)
12V Trigger: Trigger In/Out (3.5mm); trigger input accepts control signal 3V–30V (AC or DC); rear-panel trigger mode selector (manual/trigger)
Power Requirements (U.S. version): 120V, 60Hz
Power Requirements (European version): 230V, 50Hz
Power Consumption: 650W
Standby Power Consumption: 0.5W
BTU Rating (4Ω, 1/8th power): 1683 BTU/h
Dimensions (W × H × D): 431 × 188 × 454mm (17" × 7.5" × 17.9")
Front Panel Height: 4U / 176.8mm (7")
Net Weight: 21.8kg (48 lbs.)
Rack Mounting: Optional rack ears available
AC Connection: Detachable IEC-type power cord
Finish/Color Options: Black; Silver available in some regions
Rotel RMB-1555 Q&A:
What makes the RMB-1555 a good choice for home theater?
It delivers true multichannel power with 120W per channel (all five channels driven), helping keep surround effects, dialogue, and music clean and controlled even at higher volumes.
How much power does the RMB-1555 produce per channel?
It’s rated at 120W/ch into 8Ω with all five channels driven, and 170W/ch into 4Ω with all five channels driven.
Does this amplifier work with 4-ohm speakers?
Yes. The RMB-1555 supports speakers down to a 4Ω minimum, providing strong current delivery for more demanding loads.
What inputs does the RMB-1555 use?
The RMB-1555 uses RCA (unbalanced) multichannel analog inputs for straightforward connection to an AV receiver or surround processor’s pre-outs.
Can I automate power on/off with my AV processor?
Yes. It includes 12V trigger input/output (3.5mm) so it can power on automatically when your system sends a trigger signal.
Is the RMB-1555 rack-mountable?
It can be rack-installed using optional rack ears, making it a strong fit for custom theater racks and equipment closets.
How large is the RMB-1555 and will it fit in standard AV furniture?
It measures 431 × 188 × 454mm (17" × 7.5" × 17.9") and has a 4U / 7" front panel height, so check both shelf depth and ventilation clearance.
Does the RMB-1555 run efficiently when not in use?
Yes. It consumes just 0.5W in standby, helping reduce idle power draw without sacrificing readiness.
The Rotel RMB-1555 is a high-current 5-channel Class AB power amplifier designed for powerful, controlled home theater and multichannel audio performance. It delivers 120 watts per channel into 8 ohms with all five channels driven, plus 170 watts per channel into 4 ohms for demanding speakers. Premium engineering—like a robust toroidal power supply and discrete output design—supports low distortion, wide bandwidth, and confident dynamics. With 12V trigger control and optional rack ears, it’s an installation-friendly upgrade for serious surround systems.
Get the Details
Features & Specs
Features & Specs
True 5-Channel Power for Surround Systems
Provides consistent output across all channels, helping maintain balanced dynamics and clarity in full home theater speaker layouts.
Conservatively Rated Output with 4Ω Capability
Delivers 120W/ch into 8Ω (all channels driven) and steps up to 170W/ch into 4Ω, giving extra current and control for tougher speaker loads.
Class AB Design for Clean Power and Efficiency
Class AB topology is chosen for a refined blend of musical detail and real-world thermal efficiency, making it ideal for extended movie sessions.
A robust transformer and discrete output transistors help the amplifier stay composed during sudden peaks, keeping bass tight and transient impact convincing.
Low Distortion, Wide Bandwidth Performance
With <0.03% THD/IMD and a 10Hz–100kHz frequency response, the RMB-1555 preserves detail, separation, and natural tonal balance across the spectrum.
Installer-Friendly Control and Connectivity
12V trigger in/out supports automated power control with your processor, while sturdy binding posts, detachable IEC power connection, and optional rack ears simplify clean, reliable installs.
True 5-Channel Power for Surround Systems
Provides consistent output across all channels, helping maintain balanced dynamics and clarity in full home theater speaker layouts.
Conservatively Rated Output with 4Ω Capability
Delivers 120W/ch into 8Ω (all channels driven) and steps up to 170W/ch into 4Ω, giving extra current and control for tougher speaker loads.
Class AB Design for Clean Power and Efficiency
Class AB topology is chosen for a refined blend of musical detail and real-world thermal efficiency, making it ideal for extended movie sessions.
A robust transformer and discrete output transistors help the amplifier stay composed during sudden peaks, keeping bass tight and transient impact convincing.
Low Distortion, Wide Bandwidth Performance
With <0.03% THD/IMD and a 10Hz–100kHz frequency response, the RMB-1555 preserves detail, separation, and natural tonal balance across the spectrum.
Installer-Friendly Control and Connectivity
12V trigger in/out supports automated power control with your processor, while sturdy binding posts, detachable IEC power connection, and optional rack ears simplify clean, reliable installs.
Expert Insight
Expert Insight
As a Rotel owner I can honestly say that I get a very high-end sound without paying a high-end price!
Michael Chapman
Brand Manager-ListenUp
Details
Details
Rotel RMB-1555 Five Channel Power Amplifier
The Rotel RMB-1555 is a high-current 5-channel Class AB power amplifier built to bring effortless dynamics, tight control, and refined detail to serious home theater and multichannel music systems. Conservatively rated at 120 watts per channel into 8 ohms with all five channels driven, it delivers the confident headroom and clarity you want for impactful movie soundtracks and lifelike surround playback—without strain. A robust toroidal transformer, discrete output transistors, and premium internal components help the RMB-1555 maintain composure during demanding scenes, keeping dialogue crisp, effects expansive, and bass clean and authoritative. From premium speaker binding posts to 12V trigger control and optional rack ears, it’s engineered as a reliable, installation-friendly powerhouse for medium to large rooms.
Inputs: RCA (unbalanced) multichannel analog inputs
Input Sensitivity: 1.5V
Input Impedance: 12kΩ
Speaker Terminals: Heavy-duty binding posts (supports bare wire, spade lugs, or dual banana plug connections; banana use may be restricted in some regions)
12V Trigger: Trigger In/Out (3.5mm); trigger input accepts control signal 3V–30V (AC or DC); rear-panel trigger mode selector (manual/trigger)
Power Requirements (U.S. version): 120V, 60Hz
Power Requirements (European version): 230V, 50Hz
Power Consumption: 650W
Standby Power Consumption: 0.5W
BTU Rating (4Ω, 1/8th power): 1683 BTU/h
Dimensions (W × H × D): 431 × 188 × 454mm (17" × 7.5" × 17.9")
Front Panel Height: 4U / 176.8mm (7")
Net Weight: 21.8kg (48 lbs.)
Rack Mounting: Optional rack ears available
AC Connection: Detachable IEC-type power cord
Finish/Color Options: Black; Silver available in some regions
Rotel RMB-1555 Q&A:
What makes the RMB-1555 a good choice for home theater?
It delivers true multichannel power with 120W per channel (all five channels driven), helping keep surround effects, dialogue, and music clean and controlled even at higher volumes.
How much power does the RMB-1555 produce per channel?
It’s rated at 120W/ch into 8Ω with all five channels driven, and 170W/ch into 4Ω with all five channels driven.
Does this amplifier work with 4-ohm speakers?
Yes. The RMB-1555 supports speakers down to a 4Ω minimum, providing strong current delivery for more demanding loads.
What inputs does the RMB-1555 use?
The RMB-1555 uses RCA (unbalanced) multichannel analog inputs for straightforward connection to an AV receiver or surround processor’s pre-outs.
Can I automate power on/off with my AV processor?
Yes. It includes 12V trigger input/output (3.5mm) so it can power on automatically when your system sends a trigger signal.
Is the RMB-1555 rack-mountable?
It can be rack-installed using optional rack ears, making it a strong fit for custom theater racks and equipment closets.
How large is the RMB-1555 and will it fit in standard AV furniture?
It measures 431 × 188 × 454mm (17" × 7.5" × 17.9") and has a 4U / 7" front panel height, so check both shelf depth and ventilation clearance.
Does the RMB-1555 run efficiently when not in use?
Yes. It consumes just 0.5W in standby, helping reduce idle power draw without sacrificing readiness.
