Rotel RB-1582MKII Stereo Power Amplifier

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:

• Type: Stereo Power Amplifier
• Amplifier Class: Class AB
• Power Output (Continuous): 200 W/ch (8 Ω)
• Power Output: 323 W/ch (4 Ω)
• Total Harmonic Distortion (THD): (20 Hz–20 kHz) < 0.03%
• Intermodulation Distortion (IMD): (60 Hz : 7 kHz, 4:1) < 0.03%
• Frequency Response: 10 Hz – 100 kHz (±0.5 dB)
• Signal-to-Noise Ratio (IHF “A” Weighted / IHF A network): 116 dB
• Damping Factor: 800 (20 Hz–20 kHz, 8 Ω)
• Speaker Impedance: 4 Ω minimum
• Input Options: Balanced XLR inputs; Unbalanced RCA inputs
• Input Sensitivity:
  • Line Level (RCA): 1.9 V
  • Line Level (XLR): 3.0 V
• Input Impedance:
  • RCA: 12k Ω
  • XLR: 100k Ω
• Gain:
  • RCA: 26.5 dB
  • XLR: 22.5 dB
• Power Requirements:
  • U.S. version: 120 V, 60 Hz
  • European version: 230 V, 50 Hz
• Power Consumption: 550 W
• Idle Power Consumption: 60 W
• Standby Power Consumption: 0.5 W
• BTU Rating / BTU (4 Ω, 1/8 power): 1104 BTU/h
• Dimensions (W × H × D): 431 × 144 × 407 mm
• Dimensions (inches): 17 × 5 7/8 × 16 in
• Front Panel Height: 3U / 132.6 mm (5 1/4 in)
• Net Weight: 17.6 kg (38.80 lbs)
• Included / Integration: Rack ears included; 12V trigger input
• 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