Rotel RMB-1587 MKII 7 Channel Power Amplifier

Rotel RMB-1587 MKII 7 Channel Power Amplifier with Dual Transformers

The RMB-1587 MKII 7 channel amplifier continues Rotel’s heritage of producing high powered, perfectionist amplifiers for multi-channel systems.

Following Rotel's MKII design architecture, the RMB-1587 MKII incorporates both circuit and component upgrades in the power supply and amplifier stages to achieving ultra-low distortion, signal isolation, and high-gain output power efficiently packaged in a single, multi-channel amplifier chassis.

The Class AB RMB-1587 MKII is engineered around two massive in-house manufactured high-current, low emission toroidal transformers designed to supply stable current to an array of 8 high-efficiency bulk storage capacitors. This power supply architecture renders deep bass energy even when driving the most demanding loudspeakers with ultimate authority and control.

Differing from multi-channel amplifiers whose output drops when driving multiple channels simultaneously, the RMB-1587 MKII delivers all 7 channels of Class AB amplification at 155 Watts per channel into 8 Ohms.

This massively engineered amplifier achieves 250 Watts per channel into 4 Ohms with all channels driven and is capable of a staggering 335 Watts RMS per channel when used in Stereo into 4 Ohm loudspeakers.

To optimize cooling, the RMB-1587MKII is equipped with 4 thermostat-controlled, variable-speed ultralow-noise fans.

The RMB-1587MKII is built for custom installation. Convenient auto-switching XLR Balanced and RCA inputs ensuring compatibility with any AV Processor or Home Theatre receiver preamp output, and a 12 V trigger input and output allows simplified power control. Custom rack mount installation hardware is available for simplified mounting in standard 19” equipment racks.

Our Review

Rotel’s RMB-1587 MKII is one of those rare seven-channel power amps that feels both effortlessly powerful and beautifully refined, delivering the kind of confident, room-filling performance that makes movie nights and music sessions equally rewarding. Built around Rotel’s updated MKII architecture, it packs upgraded circuitry, dual in-house toroidal transformers, and a bank of high-efficiency capacitors that keep the energy reserves deep and responsive, feeding each Class AB channel with remarkable control. Unlike many multi-channel designs that sag under full load, this beast maintains a rock-solid 155 Watts per channel into 8 Ohms - or a mighty 250 Watts into 4 Ohms - all channels driven, giving even the hungriest speakers the authority they crave. Thoughtful touches like ultra-quiet thermostatic cooling fans, auto-switching XLR/RCA inputs, and rack-friendly hardware make it a dream for custom installs, while the sleek black finish tops off an amp that’s as polished in presentation as it is in performance.