Rotel RMB-1587 MKII 7-Channel Power Amplifier | RMB1587MK2

Rotel RMB-1587 MKII 7-Channel Power Amplifier

The RMB-1587 MKII is a high-current, 7-channel Class A/B power amplifier engineered to maintain output even with all channels driven. Rotel’s MKII platform updates the power supply and amplifier stages for lower distortion, improved isolation, and high-gain output in a single multi-channel chassis.

Dealer Snapshot

• Use case: reference-grade surround systems needing consistent power across all channels (theater L/C/R + surrounds + heights, etc.).
• Continuous power: 155 W/ch (7 ch driven, 8 Ω) • 250 W/ch (7 ch driven, 4 Ω) • 335 W/ch (2 ch driven, 4 Ω).
• Architecture: dual monoblock amplifier design with massive dual-toroid power supply and slit-foil capacitors.
• Inputs: balanced XLR and unbalanced RCA for each channel.
• Control: 12 V trigger in/out; fan speed switch (AUTO/OFF) for rack noise vs. cooling priority.

Why It Matters (Dealer-facing)

• All-channels-driven power: avoids the “spec-sheet drop” many multi-channel amps show when multiple channels are active.
• Gain + noise performance: high SNR and stable gain simplify level-matching with surround processors.
• CI readiness: 12 V trigger in/out supports clean power sequencing and daisy-chaining to additional components.
• Thermal strategy: four thermostat-controlled, variable-speed ultra-low-noise fans plus a rear AUTO/OFF fan switch for rack deployments.

Connectivity

• Analog inputs (per channel): 7 × RCA (unbalanced) + 7 × XLR (balanced)
• Speaker outputs: 7 channels of binding-post speaker outputs
• Power / control: IEC inlet; 12 V trigger IN/OUT (3.5 mm mono)

Integration Notes (Installers)

• 12 V trigger electrical: trigger IN accepts control signals from 3–30 V (AC or DC); trigger OUT provides 12 V when a trigger signal is applied to IN.
• Gain structure: 26.6 dB gain; choose RCA vs XLR based on processor output voltage and cable-run environment.
• Rack ventilation: allow clearance and avoid obstructing vents; use AUTO fan mode for typical rack installs, OFF only when ventilation is proven and noise is critical.

Specs at a Glance

Core electrical and performance specifications

Category	Specification
Channels	7
Continuous Power Output	155 W/ch (7 ch driven, 8 Ω) • 250 W/ch (7 ch driven, 4 Ω) • 335 W/ch (2 ch driven, 4 Ω)
Amplifier Type	Class A/B
THD (20 Hz–20 kHz)	< 0.03%
IMD (60 Hz:7 kHz, 4:1)	< 0.03%
Frequency Response	10 Hz–100 kHz (+0 dB, −0.3 dB)
SNR (A-weighted)	111 dB
Damping Factor (1 kHz, 8 Ω)	330
Crosstalk / Separation	> 55 dB
Input Sensitivity	RCA: 1.61 V • XLR: 3.4 V
Input Impedance	RCA: 12 kΩ • XLR: 50 kΩ
Power Consumption	1400 W
BTU Rating (4 Ω, 1/8 power)	4016 BTU/h
Dimensions (W×H×D)	17.0 × 9.33 × 18.0 in (431 × 237 × 456 mm)
Front Panel Height	5U (8.75 in / 221 mm)
Net Weight	82.9 lb (37.6 kg)

Finish Options

• RMB1587MK2B — Black
• RMB1587MK2S — Silver

MSRP & Logistics (No Dealer Pricing)

MSRP, identifiers, and shipping carton details

Model	Finish	MSRP	UPC	Ship Wt	Carton (L×W×H)	Warranty	Status
RMB1587MK2B	Black	$5,399.00	672563285110	94.0 lb	24 × 24 × 14 in	5 Years	Active
RMB1587MK2S	Silver	$5,399.00	672563785115	94.0 lb	24 × 24 × 14 in	5 Years	Active

In the Box

• Rack ears (included)
• Detachable IEC power cord

FAQ

• Is it truly rated with all channels driven? Yes — Rotel specifies 155 W/ch (7 ch, 8 Ω) and 250 W/ch (7 ch, 4 Ω).
• Balanced inputs for every channel? Yes — XLR and RCA are provided for each channel.
• How does the trigger work? 3.5 mm mono trigger IN/OUT; IN accepts 3–30 V (AC/DC); OUT provides 12 V when a trigger is applied to IN.
• Can I manage fan noise? Yes — rear fan speed switch offers AUTO or OFF modes.
• Rack mountable? Yes — rack ears are included; front panel height is 5U.