Rotel RMB-1555 5-Channel Power Amplifier (120W x5) | RMB1555
Rotel RMB-1555 5-Channel Power Amplifier (120W x5) | RMB1555
Available to order — ships from incoming stock
Typically ships in 4–8 Business Days (Western Canada) · 2–5 Business Days (Eastern Canada)
SKU:RMB1555B
Shipping terms (Free over $300) calculated at checkout.
Rotel RMB-1555 5-Channel Power Amplifier
The Rotel RMB-1555 is a dedicated 5-channel Class A/B power amplifier engineered for continuous, all-channels-driven home theater use. It delivers 120 W/ch into 8 Ω (5 channels driven) and 170 W/ch into 4 Ω (5 channels driven), using a high-current toroidal transformer, British-made slit-foil capacitors, and discrete output devices for control, stability, and long-term reliability in real-world surround systems.
Dealer Quick Fit
- Best for: L/C/R + surround amplification from any AVR/processor with 5-channel pre-outs
- Power: 120 W/ch (8 Ω, 5ch driven) • 170 W/ch (4 Ω, 5ch driven)
- Input format: 5-channel analog RCA (unbalanced)
- Control: 12V trigger in/out + rear trigger mode selector
- Rack: 4U front-panel height • rack ears included
Why Dealers Care
- Honest multi-channel power: specified with all 5 channels driven, matching real theater loads instead of 1–2 channel marketing specs.
- High-current supply architecture: toroidal transformer + slit-foil energy storage supports dynamic peaks and improved speaker control.
- Installer-friendly control: 12V trigger in/out and a trigger mode switch simplify automation and rack integration.
Power & Performance Snapshot
| Spec | Value |
|---|---|
| Continuous Power Output | 120 W/ch (8 Ω, 5 channels driven) • 170 W/ch (4 Ω, 5 channels driven) |
| THD (20 Hz–20 kHz) | < 0.03% |
| Frequency Response | 10 Hz–100 kHz (+0.5 dB, −3 dB) |
| S/N Ratio (IHF “A”) | 116 dB |
| Damping Factor | 180 |
| Gain | 26.5 dB |
| Speaker Load | 4 Ω minimum |
Connections & Control
- Analog Inputs: 5 × RCA (unbalanced) for 5-channel processor/AVR pre-outs
- Speaker Outputs: 5 channels via heavy-duty binding posts
- 12V Trigger: 3.5 mm IN and OUT
- Trigger Mode Selector: rear-panel toggle for manual vs. trigger-controlled power
- Rack / Ventilation: rear-panel fan/ventilation control provisions for rack installs (set based on airflow/noise priorities)
Installation Notes (Dealer-Useful)
- Signal chain: ideal pairing is a surround processor/AVR with 5-channel pre-outs. Maintain consistent channel mapping (Front L/R, Center, Surround L/R) from processor outputs to amp inputs.
- Trigger behavior: use the rear trigger mode selector for automated on/off; 12V trigger output can cascade power to additional components.
- Speaker loads: rated for 4 Ω minimum. For difficult speakers or tight racks, prioritize ventilation and cable integrity.
- Rack planning: allow airflow above/below and avoid blocking ventilation openings; confirm thermal headroom for sustained high-output theaters.
Core Specifications
| Category | Specification |
|---|---|
| Input Sensitivity / Impedance | 1.5 V / 12 kΩ |
| Power Consumption | 650 W |
| Standby Power | 0.5 W |
| BTU Rating | 1683 BTU/h (4 Ω, 1/8 power) |
| Dimensions (W × H × D) | 431 × 188 × 454 mm (17.0 × 7.5 × 17.9 in) |
| Front Panel Height | 4U (176.8 mm / 7.0 in) |
| Net Weight | 21.8 kg (48.0 lb) |
Dealer Logistics (MSRP / UPC / Carton)
- MSRP: $2,599 (MSRP only)
- Warranty: 5 Years
- Rack Mount: rack ears included
| Finish | Model | UPC |
|---|---|---|
| Black | RMB1555B | 672563200113 |
| Silver | RMB1555S | 672563700118 |
| Shipping Weight | Carton (L × W × H) | Product Weight | Product (W × H × D) |
|---|---|---|---|
| 61 lb | 22 × 22 × 12 in | 48 lb | 17.0 × 7.5 × 17.88 in |
Finish Options
- Black
- Silver
In the Box
- Rack ears
- Power cord
FAQ (Dealer-Level)
- Does RMB-1555 have balanced XLR inputs? No — RCA analog inputs only.
- Is the 4 Ω power rating with all channels driven? Yes — 170 W/ch into 4 Ω (5 channels driven).
- Can it be automated in a rack? Yes — 12V trigger in/out plus a rear trigger mode selector for automated power.
- What speaker impedance is supported? 4 Ω minimum.
