Rotel RB-1590

Rotel RB-1590 – High-end stereo power amplifier with impressive performance and audiophile precision

The Rotel RB-1590 is a statement of uncompromising sound quality, impressive power reserves, and high-quality components. As a Class AB power amplifier with 2 x 350 watts at 8 ohms, it delivers not only raw power but also exceptional sonic finesse—ideal for large listening environments and demanding loudspeakers.

Power and control for true high-end systems

With an output power of up to 648 watts per channel at 4 ohms, the RB-1590 sets new standards in its class. This tremendous performance ensures that even power-hungry speakers can be driven effortlessly and with full control – even at high volumes or with dynamically demanding music.

Outstanding power supply – the heart of performance

Inside, a high-quality power supply with two custom-made toroidal transformers ensures a consistently stable power supply. Separate windings enable a particularly clean power supply for each channel. The system is complemented by eight slit-foil capacitors from Great Britain. These are considered particularly low-loss, fast, and voltage-stable—ideal for complex musical passages with high power requirements.

Careful signal routing for optimal sound purity

The symmetrical dual-mono design ensures minimal crosstalk and maximum channel separation. Combined with the sophisticated circuit design and the use of select components, this results in a detailed, deep, and natural soundscape characterized by excellent spatial imaging and precise soundstage reproduction.

Variety of connections and user-friendly features

The RB-1590 offers both balanced XLR and unbalanced RCA inputs , allowing for flexible integration into existing hi-fi and home theater setups. High-quality speaker screw terminals , a 12V trigger connection , an automatic protection circuit , an overvoltage relay , and a detachable power cable round out the features.

The solid 5U rack-sized housing underlines the professional construction and guarantees long-term, reliable performance – even under continuous load.

Technical data of the Rotel RB-1590

Output power:
• 350 watts/channel at 8 ohms
• 648 watts/channel at 4 ohms

Amplifier type:
• Class AB

Frequency response:
• 10 Hz – 100 kHz (±0.5 dB)

Total harmonic distortion (THD):
• < 0.03% (20 Hz – 20 kHz)

Intermodulation distortion:
• < 0.03% (60 Hz : 7 kHz, 4:1)

Signal-to-noise ratio:
• 120 dB (IHF A)

Gain:
• RCA: 27.5 dB
• XLR: 23.5 dB

Input sensitivity:
• RCA: 2.2 V
• XLR: 3.5V

Input impedance:
• RCA: 12 kOhm
• XLR: 100 kOhm

Damping factor:
• 300

Channel separation (crosstalk):
• > 50 dB

Speaker impedance:
• 4 ohms minimum

Connections:
• XLR (balanced)
• RCA (unbalanced)
• Speaker terminals (2 pairs per channel)
• 12V trigger, protection circuit, detachable power cable

Dimensions (W × H × D):
• 431 × 237 × 454 mm
• Panel height: 5U / 221 mm

Weight:
• 38.1 kg

Power supply:
• 230 V, 50 Hz
• Power consumption: 800 W
• Standby consumption: 0.5 W

BTU (at 4 ohms, 1/8 power):
• 2100 BTU/h