Rotel RB-1582 MkII Stereo Power Amplifier
Built to be the powerhouse in a serious hi-fi or home theater setup, the Rotel RB-1582 MkII is a high-current, Class AB stereo power amplifier rated at 200 watts per channel into 8 ohms (and 323 watts per channel into 4 ohms) for effortless control of demanding speakers. Rotel’s Balanced Design Concept pairs meticulous circuit layout with premium parts selection to deliver both slam and finesse—cleanly resolving low-level detail while staying composed during explosive dynamic peaks.
At the core is an oversized toroidal transformer feeding a massive 60,000µF of energy storage using special low-ESR “slit foil” capacitors. This fast charge/discharge capability helps preserve signal fidelity during big orchestral swells and hard-hitting bass transients. The amplifier is laid out with left/right mono-block construction after the transformer, star-grounding on a copper grounding plate for low noise, and a discrete output stage with 10 high-current bipolar transistors per channel. Connectivity is equally system-friendly with both balanced XLR and unbalanced RCA inputs, plus installation conveniences like a 12V trigger input and rack ears included.
The Rotel RB-1582 MKII is part of ListenUp's Rotel Power Amplifiers Collection.
What It's Good At:
- Delivering high-current, high-control power for large, difficult loudspeakers
- Preserving clarity and micro-detail while still hitting hard on dynamic passages
- Providing tight, authoritative bass with a high damping factor and robust power supply
- Supporting premium preamps/processors via balanced XLR and RCA input options
- Integrating cleanly into custom installs with 12V trigger input and rack-mount ears
- Staying quiet and composed thanks to star-grounding and carefully optimized internal layout
Rotel RB-1582 MkII Full Specifications:
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Type: Stereo Power Amplifier
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Amplifier Class: Class AB
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Power Output (Continuous): 200 W/ch (8 Ω)
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Power Output: 323 W/ch (4 Ω)
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Total Harmonic Distortion (THD): (20 Hz–20 kHz) < 0.03%
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Intermodulation Distortion (IMD): (60 Hz : 7 kHz, 4:1) < 0.03%
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Frequency Response: 10 Hz – 100 kHz (±0.5 dB)
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Signal-to-Noise Ratio (IHF “A” Weighted / IHF A network): 116 dB
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Damping Factor: 800 (20 Hz–20 kHz, 8 Ω)
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Speaker Impedance: 4 Ω minimum
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Input Options: Balanced XLR inputs; Unbalanced RCA inputs
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Input Sensitivity:
- Line Level (RCA): 1.9 V
- Line Level (XLR): 3.0 V
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Input Impedance:
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Gain:
- RCA: 26.5 dB
- XLR: 22.5 dB
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Power Requirements:
- U.S. version: 120 V, 60 Hz
- European version: 230 V, 50 Hz
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Power Consumption: 550 W
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Idle Power Consumption: 60 W
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Standby Power Consumption: 0.5 W
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BTU Rating / BTU (4 Ω, 1/8 power): 1104 BTU/h
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Dimensions (W × H × D): 431 × 144 × 407 mm
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Dimensions (inches): 17 × 5 7/8 × 16 in
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Front Panel Height: 3U / 132.6 mm (5 1/4 in)
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Net Weight: 17.6 kg (38.80 lbs)
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Included / Integration: Rack ears included; 12V trigger input
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Design Notes / Key Internal Engineering: Oversized toroidal transformer; 60,000µF storage capacity; “slit foil” capacitors; mono-block channel layout after transformer; star-grounding on copper grounding plate; discrete output stage with 10 high-current bipolar transistors per channel
Rotel RB-1582 MkII Q&A:
- Is the RB-1582 MkII powerful enough for demanding floorstanding speakers?
- Yes. With 200 W/ch into 8 Ω and 323 W/ch into 4 Ω, it provides the current and headroom needed for large speakers and dynamic music or movie playback.
- Does it support balanced connections from a preamp or processor?
- Yes. It includes balanced XLR inputs for low-noise system matching, along with traditional unbalanced RCA inputs.
- What kind of amplifier design is it (Class A, AB, D)?
- It uses a Class AB amplifier design, chosen for strong power delivery with refined, low-distortion performance.
- How does it keep bass tight and controlled?
- A high damping factor (800) plus a robust power supply design helps the amplifier maintain control over speaker drivers—especially in the low frequencies.
- Can I integrate it into a custom rack or control system?
- Yes. Rack ears are included, and it supports a 12V trigger input for coordinated power on/off with compatible components.
- What makes the power supply special in this amplifier?
- It uses an oversized toroidal transformer and 60,000µF of energy storage with fast “slit foil” capacitors designed to charge/discharge quickly for stable, dynamic performance.
- What speakers can I use with it (minimum impedance)?
- It supports speakers with a minimum impedance of 4 Ω.
- How large and heavy is the RB-1582 MkII?
- It measures 431 × 144 × 407 mm (17 × 5 7/8 × 16 in) and weighs 17.6 kg (38.80 lbs).
Rotel RB-1582 MkII Downloads:
Rotel RB-1582 MkII Manual
Rotel RB-1582 MkII Specifications Sheet
Rotel RB-1582 MkII Drawing
