Rotel RB-1590 Stereo Power Amplifier - 350 W Per Channel (Silver)

Rotel RB-1590 Stereo Power Amplifier

Rotel’s RB-1590 is a flagship Class AB stereo power amplifier built for listeners who want effortless authority, control, and scale from their two-channel system. Delivering 350 watts per channel into 8 ohms (and 648 watts per channel into 4 ohms), it’s engineered to drive demanding speakers with ease—especially in larger rooms where clean headroom and realistic dynamics matter most. At the heart of the design is a massive, ultra-stable power supply featuring dual Rotel custom toroidal transformers and eight British-made BHC capacitors, chosen for low loss and fast response so the amplifier stays composed even under tough loads.

Beyond raw power, the RB-1590 is laid out in a true monoblock-style topology for stronger channel separation and more precise stereo imaging. Connectivity is equally serious, with both balanced XLR and RCA inputs, plus dual pairs of 5-way binding posts to support flexible speaker connections. Protection and long-term reliability are built in with thermal, over-current, and over-voltage safeguards, as well as a dual-staged power-on relay to reduce surge current and extend component life. The result is a high-current, audiophile-grade amplifier that brings impact, nuance, and clarity to the full frequency range—without sounding strained.

What It's Good At:

• Delivering effortless dynamics and clean headroom for large rooms and power-hungry speakers
• Producing tight, controlled bass with a high damping factor (300)
• Preserving stereo imaging and separation thanks to monoblock-style circuit topology
• Supporting premium system integration with balanced XLR and RCA inputs
• Offering flexible speaker hookup with two pairs of 5-way binding posts
• Running reliably with robust protection circuits and surge-reducing power-on design

Rotel RB-1590 Full Specifications:

• Type: Stereo Power Amplifier
• Amplifier Class: Class AB
• Continuous Power Output: 350 watts/channel (8 ohms)
• Continuous Power Output: 648 watts/channel (4 ohms)
• Total Harmonic Distortion (20 Hz–20 kHz, 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 (1 kHz, 8 ohms): 300
• Minimum Speaker Impedance: 4 ohms minimum (8 ohms rated)
• Signal-to-Noise Ratio (A-weighting): 120 dB
• Crosstalk / Separation: > 50 dB
• Input Impedance / Sensitivity (Unbalanced RCA): 12k ohms / 2.2 V
• Input Impedance / Sensitivity (Balanced XLR): 100k ohms / 3.5 V
• Gain (Unbalanced RCA): 27.5 dB (±0.5 dB)
• Gain (Balanced XLR): 23.5 dB (±0.5 dB)
• Inputs: Balanced XLR, Unbalanced RCA
• Speaker Outputs: Two pairs of 5-way binding posts
• Trigger: 12-volt trigger control
• Protection: Thermal protection, over-current protection, over-voltage protection
• Power-On Design: Dual-staged power-on relay (surge reduction / longevity)
• Power Cord: Detachable IEC power cord
• Chassis / Rack: 5U chassis with included rack ears
• Power Requirements (USA): 120 volts, 60 Hz
• Power Requirements (EC): 230 volts, 50 Hz
• Power Consumption: 800 watts
• Standby Power Consumption: < 0.5 watts
• BTU (4 ohms, 1/8th power): 2100 BTU/h
• Dimensions (W x H x D): 431 x 237 x 454 mm
• Dimensions (W x H x D): 17 x 9 3/8 x 17 7/8 in
• Front Panel Height: 5U / 221 mm / 8 3/4 in
• Net Weight: 38.1 kg / 84 lb

Rotel RB-1590 Q&A:

What kind of system is the Rotel RB-1590 best suited for?

It’s ideal for high-performance two-channel systems needing substantial power, especially with large rooms or low-sensitivity speakers that benefit from extra current and headroom.

How much power does the RB-1590 deliver per channel?

It outputs 350 watts per channel into 8 ohms and 648 watts per channel into 4 ohms for confident control over demanding loudspeakers.

Does the RB-1590 have balanced inputs?

Yes. It includes balanced XLR inputs for low-noise connections, along with standard unbalanced RCA inputs for broad compatibility.

Can it handle 4-ohm speakers safely?

Yes. The amplifier is rated for 4-ohm operation (4 ohms minimum) and is designed with a robust power supply and protection circuits to maintain stability.

What makes the RB-1590 sound precise rather than just powerful?

Its monoblock-style circuit layout improves channel separation and imaging, while carefully selected components and a high-current supply help preserve detail at any listening level.

Does it include protection features?

Yes. It incorporates thermal, over-current, and over-voltage protection, helping safeguard the amplifier and connected speakers.

Can I integrate it with a home audio control system?

Yes. A 12V trigger connection supports automatic power on/off with compatible preamps, processors, or control systems.

Is it rack-mount friendly?

Yes. It uses a 5U chassis and includes rack ears for custom installations or equipment racks.