Rotel RMB-1555 Multi Channel Power Amplifier Review: Power, Precision and Clarity Unleashed
In this Rotel RMB 1555 Multi Channel Power Amplifier Review, our team at The Audio Tailor delves into one of Rotel’s most formidable powerhouses. Boasting a conservative rating of 120 watts per channel into 8 Ω (all channels driven), the RMB-1555 promises audiophile-grade performance for both music lovers and home theatre enthusiasts.
Design and Build Quality
The RMB-1555 combines robust construction with elegant restraint. Its rack-mountable 4U chassis, finished in matt black, conceals a high-current toroidal transformer and discrete output transistors—components chosen for their thermal stability and dynamic headroom. At 21.8 kg, it’s a solid beast that conveys confidence even before you power it up.
Performance and Sound Signature
Central to the RMB-1555’s appeal is its Class AB amplifier topology. This configuration strikes an ideal balance between the warmth of analogue circuits and the efficiency needed for sustained high-power output. Thanks to a damping factor of 180 (20 Hz–20 kHz into 8 Ω), bass remains taut and controlled, whilst the 10 Hz–100 kHz frequency response ensures both sub-bass depth and crystalline highs.
With Total Harmonic Distortion (20 Hz–20 kHz) and Intermodulation Distortion (60 Hz–7 kHz) held below 0.03%, the RMB-1555 delivers exceptionally clean, neutral reproduction. Complex orchestral crescendos, dynamic jazz solos and explosive film soundtracks come through with startling clarity and impact.
Technical Highlights
Power Output: 120 W / channel into 8 Ω, all five channels driven
Class AB Amplifier with Discrete Output Transistors
High Current Toroidal Transformer for low noise and superior transient response
Frequency Response: +0.5 dB, -3 dB from 10 Hz to 100 kHz
Signal-to-Noise Ratio: 116 dB (IHF A network)
Input Impedance / Sensitivity: 12 kΩ / 1.5 V
Who Should Consider the RMB-1555?
Whether you’re upgrading a dedicated home cinema, driving high-end floorstanding speakers in a sizeable listening room, or seeking reliable multi-channel power for a two-channel music rig plus effects, the RMB-1555 excels. It’s particularly well-suited to:
Home theatre aficionados craving dynamic impact at reference levels
Music purists who demand low distortion and faithful tonal balance
Robust 120 W per channel (8 Ω), plenty of headroom for demanding speakers
Ultra-low distortion (<0.03%) for transparent, accurate sound
Wide 10 Hz–100 kHz response captures every detail
High-current toroidal transformer ensures clean power delivery
Rack-friendly design and durable build quality
Cons
Hefty weight (21.8 kg) requires sturdy rack or shelving support
No built-in volume control—requires a preamplifier or AV processor
Elevate Your Audio Journey
Ready to harness the power and precision of the Rotel RMB-1555? Explore full details on our Rotel RMB-1555 Product Page or speak directly with our experts at The Audio Tailor. Call us on 1300 308 711 or email sales@theaudiotailor.com.au to discuss how this amplifier can transform your setup.
Our personalised service ensures you find the perfect match for your room, speakers and budget. Dive into a new level of audio excellence—your ears will thank you.
