


Elegant Design with Installation Flexibility
Crafted with Rotel’s signature minimalist aesthetic, the RMB-1504 blends seamlessly into any AV setup. Its robust chassis and rack ears make it ideal for custom installations, while front panel volume attenuators and 5-way binding posts offer easy access and control.
Engineered for Performance
At the heart of the RMB-1504 lies an oversized toroidal transformer, custom-built in Rotel’s factory. Paired with high-efficiency capacitors and high-current output transistors, this amplifier ensures fast transient response, deep bass control, and consistent performance across varying speaker loads and cable lengths.
Smart Connectivity and Control
Designed with installers in mind, the RMB-1504 features 12V trigger input/output, audio signal sense power control, and audio output link connections. These options provide seamless integration into complex audio systems, enhancing automation and user convenience.
Precision and Reliability
Every component in the RMB-1504 is carefully selected through rigorous testing to meet Rotel’s uncompromising standards. The result is an amplifier that delivers accurate sound reproduction, exceptional power efficiency, and the build quality expected from over 60 years of Rotel engineering excellence.
Continuous Power Output: 4 x 70 W/ch
(20 Hz – 20 kHz, <0.03%, 8 ohms, all channels driven)
Total Harmonic Distortion: < 0.03%
(20 Hz – 20 kHz, 8 ohms)
Intermodulation Distortion: < 0.03%
(60 Hz : 7 kHz, 4:1)
Damping Factor: > 200
(20 Hz – 20 kHz, 8 ohms)
Input Impedance / Sensitivity: 20k ohms / 1.0 V
Gain: 26 dB
Input Overload Level: 5.0 V
Frequency Response (±1 dB): 10 Hz – 100 kHz
Signal to Noise Ratio (IHF A-weighted): 115 dB
Crosstalk / Separation: > 50 dB
Speaker Impedance: 4 ohms minimum
Auto Turn-On Level (Signal Sense): 4 mV input signal
Power Requirements:
US: 120 V, 60 Hz
EU: 230 V, 50 Hz
Power Consumption: 300 W
Standby Power Consumption:
Signal Sense: 1 W
Standby: < 0.5 W
BTU: 810 BTU/h
Dimensions (W x H x D): 431 x 144 x 443 mm
(17 x 5.2 x 17.5 in approx.)
Front Panel Height: 3U / 132.6 mm / 5.25 in
Weight (Net): 14.9 kg (32.8 lbs)