ROTEL RMB-1504

The Rotel RMB-1504 is a four-channel Class AB amplifier designed for those seeking uncompromising performance, built on over sixty years of experience in Hi-Fi engineering, design, and manufacturing. This amplifier delivers 70 watts per channel into 8-ohm loads and 115 watts into 4-ohm loads, providing the power and refinement required for home theater installations with overhead speakers or for custom multi-room audio systems.

At the heart of the RMB-1504 is an oversized toroidal transformer paired with high-efficiency capacitors, driving a series of high-current output transistors. This configuration ensures precise transient response, accurate detail, and controlled low-frequency consistency, regardless of speaker impedance or cable length. The result is effortless, smooth power delivery, maintaining timing and energy even in the most demanding setups.

The RMB-1504’s flexibility is enhanced by 12-volt trigger connections, user-selectable audio signal sensing power control, front-panel volume attenuators, audio output link connections, and 5-way speaker binding posts. A rack-mount kit is also available, allowing the amplifier to be integrated into various installation solutions.

Each acoustic component is carefully selected, and the circuit design is optimized for maximum accuracy, power, and efficiency. The robust construction and quality materials ensure the RMB-1504 upholds Rotel’s reputation, delivering a precise, powerful, and reliable listening experience in any environment.

Technical specifications:

• Continuous Power Output : 4 × 70 W/Channel (all channels driven, 8Ω)
• Total Harmonic Distortion (THD) : <0.03% (20 Hz–20 kHz, 8Ω)
• Frequency Response : 10 Hz – 100 kHz ±1 dB
• Signal-to-Noise Ratio (IHF "A" Weighted) : 115 dB
• Gain : 26 dB
• Intermodulation Distortion : <0.03% (60 Hz:7 kHz, 4:1)
• Damping Factor : >200
• Speaker Impedance : 4Ω minimum
• Input Sensitivity : 1 V
• Input Impedance : 20 kΩ
• Power Requirements : 230V, 50Hz
• Power Consumption : 450 W ; Standby <0.5 W ; Signal Sense 1 W
• BTU Rating : 810 BTU/h
• Dimensions (W × H × D) : 431 × 144 × 443 mm ; Front Panel Height 3U / 132.6 mm (5.25")
• Net Weight : 14.9 kg