Rotel
Rotel RMB-1504 Four-Channel Power Amplifier
Best four-channel amplifier for custom home theater and multi-room audio setups.
The Rotel RMB-1504 is a Class AB four-channel power amplifier designed for home theater and distributed audio systems. It delivers 70 watts per channel into 8 ohms and 115 watts into 4 ohm loads, featuring a massive power supply with a toroidal transformer and premium components for superb sound quality. Its high current capability easily drives demanding speaker loads. The amplifier offers flexible installation options with 12-volt trigger input/output, signal sensing power control, front panel volume attenuators, and five-way speaker binding posts. It also includes thermal and over-current protection circuits for reliability.
$1599.00
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Owner Satisfaction
4.7
/ 5
Category Rank
421
/ 1684
#421 in Power Amplifiers
Price vs Category Average
-81%
Below average
Continuous Power Output
4708
/ x W/Ch (All channels driven, Ω)
Who it's for
- Audiophiles seeking clean, authoritative power for demanding speaker setups
- Home theater owners prioritizing long-term reliability and premium build quality
- System builders needing flexible multi-channel or bi-amping configuration options
Who should skip it
- Budget-conscious buyers looking for an all-in-one integrated solution
- Users with limited rack space or lightweight furniture constraints
- Installers working in tight, enclosed cabinets with poor airflow
Performance breakdown
Power Delivery
High-current design maintains composure even with demanding, low-impedance speaker loads.
Sonic Clarity
Class AB topology ensures a refined, low-distortion output for critical listening.
System Integration
Versatile trigger and signal-sensing options make automation a seamless experience.
Build Integrity
Massive toroidal transformer provides a rock-solid foundation for long-term reliability.
Installation Flexibility
Front-panel attenuators and rack-mount compatibility simplify complex multi-room setups.
Dynamic Range
High damping factor delivers tight, punchy transients across the entire frequency spectrum.
Key Specs
Continuous Power Output
4 x 70W/Ch (All channels driven, 8Ω)
Continuous Power Output
4 x 115W/Ch (All channels driven, 4Ω)
Total Harmonic Distortion (THD)(20Hz–20kHz, 8Ω)
<0.03%
Frequency Response
10Hz - 100kHz ±1dB
S/N Ratio (IHF "A" Weighted)
115dB
Gain
26dB
Intermodulation Distortion (60Hz
7kHz, 4:1): <0.03%
Damping Factor
>200
Features
- Class AB amplifier design for superb sound quality
- High-current output transistors ensure robust power delivery
- Oversized toroidal transformer and high-efficiency capacitors for dynamic performance
- Automatic signal sensing for convenient power on/off
- 12-volt trigger input and output for system integration
- User-selected audio signal sense power control
- Front panel volume attenuators for easy adjustment
- Optional rack mount kit for flexible installation
What customers say
Customers consistently praise the Rotel RMB 1504 Four Channel Power Amplifier for its exceptional sound quality and robust reliability. Users frequently highlight its powerful, clean audio delivery, noting how it effortlessly drives various speaker setups with precision and clarity. The amplifier's consistent performance over time instills significant confidence, making it a trusted component in many home audio systems. Its solid build further reinforces the perception of a high quality, dependable product that delivers an immersive listening experience.
Know before you buy
Yes, the amplifier is rated for 4-ohm loads and delivers 115 watts per channel in that configuration. Its high-current design and robust toroidal transformer ensure it can handle demanding speaker loads without compromising performance.
The front panel attenuators allow you to manually adjust the input level for each channel independently. This is particularly useful for balancing volume levels in multi-room distributed audio setups or fine-tuning specific zones.
Yes, the RMB-1504 features user-selectable signal sensing. When enabled, the unit will automatically power on when it detects an incoming audio signal and enter standby mode after a period of inactivity.
Absolutely. The unit includes 12-volt trigger input and output ports, allowing it to be powered on or off in sync with your pre-amplifier, processor, or a centralized control system.
Yes, the RMB-1504 is compatible with an optional rack-mount kit. This makes it a versatile choice for professional equipment racks or custom home theater installations.
The amplifier is equipped with built-in thermal and over-current protection circuits. These safety features monitor the unit's operating conditions and will shut it down if it detects overheating or an electrical fault to prevent damage to the amp or your speakers.
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$1599