Rotel RB-1581 Mono Block Power Amplifier

$35.00 (Fixed Shipping Cost)

Product Overview

The RB-1581 is the ultimate in Class AB power amplification delivering a massive 500 watts of output into 8 ohms. This mono block amplifier powers even the most demanding speakers yet accurately reproduces the details of your audio. Utilizing the Rotel Balanced Design Concept in the PCB circuit layout, custom designed and Rotel factory build oversized toroidal transformer, high efficiency slit foil capacitors in the power supply and discrete power transistors the RB- 1581 is pure performance. The RB-1581 includes a rear panel mounted mechanical switch to select Balanced XLR or traditional single ended RCA inputs for ultimate connection flexibility. There are 2 sets of 5 way speaker binding posts supporting bi-amplification. A detachable IEC power cord and selectable 12 volt trigger with daisy chain output allows custom installation with ease. Everything about the RB-1581 amplifier speaks of performance including the 4mm extruded aluminum top and side covers. The elegance of the industrial design, globally sourced sonic electronic components, Rotel signature DNA musical reproduction and factory built precision
make this amplifier product to wear the Rotel brand. The RB-1581 is ideal for both 2 channel stereo applications as well as multi-channel installation in custom home theaters. Power, performance, precision. The RB-1581 is vailable in both Black and Silver finishes.

*Note – all Rotel 15 series components may be rack mounted and remotely controlled via RS-232, IR, or 12 volt (depending on model) for complete stealth operation.


Model RB-1581
Continuous Power Output 500W
(20-20k Hz, <0.09%, 8 ohms)
Total Harmonic Distortion < 0.03%,
(20Hz - 20kHz, 8 ohms)
Intermodulation Distortion

(60Hz:7kHz, 4:1)
< 0.03%,

Damping Factor (20Hz-20kHz, 8ohms) 800
Input Impedance/Sensitivity  
Unbalanced 12k ohms/ 1.6 volts
Balanced 100k ohms/ 2.5 volts
Amplifier Gain  
Unbalanced 32 dB
Balanced 28 dB
Frequency Response (μ1db) 10 Hz - 100k Hz
Speaker Impedance 4 ohms minimum
Power Requirements 220 V, 50 Hz
Power Consumption 550 watts
Dimensions (W x H x D) 431 x 144 x 407 mm
Front Panel Height 3U/132.6mm/5 1/4 ins
Weight (net) 17.1 kgs, 37.62 lbs

*Reprint from manufacturers website

Warranty Information

3 Year Warranty on parts and Labour