Rotel RMB 1555 Multi-channel Power Amplifier

$2,519 $2,799
By Rotel


The RMB-1555 is a remarkable multichannel amplifier with power output conservatively rated at 120 watts per channel into 8 ohms (all channels driven!). With all but the most demanding speakers located in extraordinarily large rooms, the RMB-1555 exerts the kind of precise control that presents both nuance and bombast correctly from the faintest flute overtones to the subterranean rumble of an approaching apocalypse.


  • 5 x 120 Watts of robust power
  • Class AB amplifier design
  • High quality slit foil capacitors made in Britain
  • Rack ears included
  • 12 volt trigger input

The RMB-1555 employs a high current, toroidal transformer matched to discrete output transistors with their higher thermal stability and freedom from the designed-in compromises that characterise their integrated circuit cousins. The Class AB amplifier configuration assures the best balance between power output and thermal efficiency.


Amplifier Class AB
Continuous Power Output 120 W/Ch (All Channels Driven, 8Ω)
Total Harmonic Distortion (THD) 20 Hz – 20 kHz <0.03%
Frequency Response 10 Hz - 100 kHz +0.5, -3 dB
S/N Ratio (IHF "A" Weighted) 116 dB
Gain 26.5 dB
Intermodulation Distortion (60 Hz:7 kHz, 4:1) <0.03%
Damping Factor 180
Speaker Impedance 4Ω Minimum
Input Sensitivity 1.5 V
Input Impedance 12 kΩ
Dimensions, Weight & Power
Dimensions (W x H x D) 431 x 188 x 454 mm (17" x 7.5" x 17.9")
Front Panel Height 4U / 176.8 mm (7")
Power Requirements 230 V, 50 Hz
Power Consumption 650 W
Standby Power Consumption 0.5 W
Net Weight 21.8 kg (48 lbs.)
BTU Rating (4Ω, 1/8th Power) 1683 BTU/h