Stereo Amplifiers

RB-1581

The RB-1581 mono block amplifier powers even the most demanding speakers yet accurately reproduces the details of your audio.

Power500 Watts of
robust power

Class ABClass AB amplifier
design

CapacitorHigh-quality slit foil
capacitors made in
Britain

XLRBalanced XLR input

12 volt trigger12 volt trigger
input

Engineered with care.

Components

 
Dimensions (W × H × D)
431 × 144 × 407mm
17" × 5.7" × 16"
 
Front Panel Height
3U / 132.6mm (5.25")
 
Power Requirements
230V, 50Hz
 
Power Consumption
550W
 
Standby Power Consumption
0.5W
 
Net Weight
17.1kg (38lbs.)

Components

 
 
Continuous Power Output
500W/Ch (20Hz-20kHz, <0.09%, 8Ω)
 
Total Harmonic Distortion (THD)
(20Hz–20kHz) <0.03%
 
Frequency Response
10Hz - 100kHz ±1dB
  
Gain
RCA: 32dB
XLR: 28dB
Product Description 

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.

More Specifications 
Intermodulation Distortion (60Hz:7kHz, 4:1)
<0.03%
 
Damping Factor
800
 
Speaker Impedance
4Ω minimum
 
Input Sensitivity
Line Level Inputs (RCA): 1.6V
Line Level Inputs (XLR): 2.5V
 
Input Impedance
Line Level Inputs (RCA): 12kΩ
Line Level Inputs (XLR): 100kΩ
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