Rotel RMB-1555 Multi-channel Power Amplifier

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

Specifications:

Continuous Power Output
(20-20kHz, < 0.03%, 8 ohms)

• 120 watts/channel,
• 5 channels dirven

Total Harmonic Distortion
(20Hz-20kHz, 8 ohms)

• < 0.03%

Intermodulation Distortion
(60Hz : 7 kHz, 4:1)

• < 0.03%

Frequency Response
(+0.5, –3 dB)

• 10Hz - 100kHz

Damping Factor
(20-20,000Hz, 8 ohms)

• 180

Speaker Impedance

• 4 ohms minimum

Signal to Noise Ratio
(IHF A network)

• 116 dB

Input Impedance/Sensitivity

• 12k ohms/1.5 volt

Gain

• 26.5 dB

Power Requirements

U.S. version

• 120 volts, 60Hz

European version

• 230 volts, 50Hz

Power Consumption

• 650 watts

Dimensions

• Width x Height x Depth
• 431 x 188 x 454mm 17 x 7 1/2 x 17 7/8 in

Front Panel Height

• 4U / 176.8mm / 7 in

Weight (net)

• 21.8kg / 48.1 lb