



Elegant and Purposeful Design
Crafted with a minimalist aesthetic, the RB-1552MKII features a robust chassis that reflects Rotel’s commitment to quality and durability. Its symmetrical layout and clean lines complement any hi-fi setup, while the internal mono block-style architecture ensures optimal channel separation and reduced interference.
Engineered for Sonic Excellence
Built on the same platform as the acclaimed RB-1582MKII, the RB-1552MKII offers slightly reduced output but retains the same high-performance DNA. Featuring independent left and right power rectification stages and decoupling enhance channel isolation, while premium “slit-foil” capacitors provide rapid energy replenishment for demanding musical passages.
High-Resolution Audio Performance
This amplifier is designed to extract every nuance from complex musical scores, delivering clarity, depth, and dynamic range. Whether paired with high-end speakers or used in a reference audio system, the RB-1552MKII ensures a rich and immersive listening experience.
Flexible Connectivity Options
The RB-1552MKII supports both balanced XLR and unbalanced RCA inputs, offering compatibility with a wide range of preamplifiers and audio sources. This flexibility makes it an ideal choice for audiophiles seeking precision and versatility in their stereo setup.
Continuous Power Output (20-20k Hz, < 0.03%, 8 ohms):
130 watts / channel
Total Harmonic Distortion (20 Hz - 20k Hz, 8 ohms):
< 0.03%
Intermodulation Distortion (60 Hz : 7 kHz, 4 : 1):
< 0.03%
Frequency Response (± 0.5 dB):
10 Hz - 100 kHz
Damping Factor (20 - 20,000 Hz, 8 ohms):
450
Speaker Impedance:
4 ohms minimum
Signal to Noise Ratio (IHF A network):
120 dB
Input Impedance / Sensitivity:
Unbalanced: 12k Ohms / 1.5 V
Balanced: 100k Ohms / 2.5 V
Gain:
Unbalanced: 26.5 dB
Balanced: 22.5 dB
Power Requirements:
U.S. version: 120 volts, 60 Hz
European version: 230 volts, 50 Hz
Power Consumption:
400 watts
BTU (4 ohms, 1/8th power):
905 BTU / h
Dimensions (Width x Height x Depth):
431 x 144 x 339 mm
17 x 5 7/8 x 13 3/8 ins.
Front Panel Height:
3U / 132.6 mm / 5 1/4 ins.
Weight (net):
12.4 kg / 27.27 lbs