Rotel RMB-1555 5-Channel Theater Amplifier



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  • With only slightly less power than its big brother, the RMB-1555 retains a very robust power supply to deliver 5 x 120 Watts per channel to medium and large home theaters.

    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.

    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 characterize their integrated circuit cousins. The Class AB amplifier configuration assures the best balance between power output and thermal efficiency.

  • Features:

    • 120 watts per channel into 8 ohms (20-20,000 Hz) at 0.03% THD with all channels driven
    • 4-ohm stable for use with a wide range of speakers
    • Class AB design
      • Custom made toroidal transformer for stable, noise-free performance
      • High-quality, British-made capacitors
    • Frequency response: 10-100,000 Hz (+0.5/-3dB)
    • Signal-to-noise ratio: 116 dB
    • Thermal and overcurrent protection circuitry
    • Rack mounting ears included
    • Detachable power cord
    Connections:
    • Unbalanced RCA inputs for all five channels
    • 5-way binding post terminals for each speaker
    • Switchable 3.5mm 12-volt trigger in/out
  • Specifications:
    Dimensions (W × H × D)
    431 × 188 × 454mm
    17" × 7.5" × 17.9"
     
    Front Panel Height
    4U / 176.8mm (7")
     
    Power Requirements
    120V, 60Hz
     
    Power Consumption
    650W
     
    Standby Power Consumption
    0.5W
     
    Net Weight
    21.8kg (48lbs.)
     
    BTU Rating (4Ω, 1/8th power)
    1683 BTU/h

    Power Output
    120W/Ch (5 channels driven, 8Ω)
    170W/Ch (5 channels driven, 4Ω)
     
    Total Harmonic Distortion (THD)
    (20Hz–20kHz) <0.03%
     
    Frequency Response
    10Hz - 100kHz +0.5, -3dB
     
    S/N Ratio (IHF "A" Weighted)
    116dB
     
    Gain
    26.5dB

    Intermodulation Distortion (60Hz:7kHz, 4:1)
    <0.03%
     
    Damping Factor
    180
     
    Speaker Impedance
    4Ω minimum
     
    Input Sensitivity
    1.5V
     
    Input Impedance
    12kΩ

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