Michi S5 Stereo Power Amplifier
The Rotel Michi S5 Stereo Power Amplifier is a reference-grade Class AB powerhouse engineered to take full control of demanding loudspeakers while preserving the speed, texture, and scale that separates true high-end systems from the rest. Built on a dual monoblock architecture, the S5 uses twin in-house, custom-engineered 2,200 VA toroidal transformers housed in epoxy-filled enclosures to reduce noise and vibration, delivering effortless dynamics with a quiet background that lets fine detail breathe. A massive energy reserve—anchored by British patented bulk storage capacitors totaling 188,000 µF—feeds 32 high-current output transistors for authoritative bass impact, confident imaging, and stable composure at real-world listening levels. With balanced XLR and unbalanced RCA inputs plus Ethernet/IP, RS232, and 12V trigger control, the S5 integrates cleanly into premium two-channel rooms and custom installations, finished with a front-panel color display and Michi rhodium-plated binding posts.
The Michi S5 is part of ListenUp's Rotel Power Amplifiers Collection.
What It's Good At:
- Delivering huge, effortless dynamics with 500W/ch into 8Ω and 800W/ch into 4Ω
- Producing tight, controlled bass and clean transients from a massive dual-transformer power supply
- Preserving micro-detail and low noise with ultra-low distortion and a high 120 dB SNR
- Driving difficult speakers confidently with a damping factor of 350 and high-current output stage
- Supporting premium systems with balanced XLR connectivity and audiophile-grade speaker terminals
- Integrating seamlessly into smart systems via Ethernet/IP, RS232, and 12V trigger control
Michi S5 Full Specifications:
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Product Type: Stereo Power Amplifier (linear, dual monoblock architecture)
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Amplifier Class: Class AB
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Continuous Power Output: 500 W/ch (8Ω), 800 W/ch (4Ω)
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Total Harmonic Distortion (THD): < 0.008%
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Intermodulation Distortion (IMD, 60Hz:7kHz, 4:1): < 0.03%
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Frequency Response: 20Hz – 20kHz (+0 dB, -0.15 dB); 10Hz – 100kHz (+0 dB, -0.4 dB)
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Damping Factor: 350 (1kHz, 8Ω)
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Signal-to-Noise Ratio (IHF “A” weighted): 120 dB
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Crosstalk / Separation: > 65 dB
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Gain: Unbalanced (RCA) 28 dB; Balanced (XLR) 24 dB
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Speaker Impedance: 4Ω minimum (recommended nominal 4Ω or higher)
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Inputs: Unbalanced RCA; Balanced XLR
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Input Selector: Rear-panel toggle selects RCA or XLR input type
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Input Sensitivity: Unbalanced 2.6 V; Balanced 4.2 V
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Input Impedance: Unbalanced 12.5 kΩ; Balanced 100 kΩ
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Power Supply: Dual custom-engineered, in-house manufactured toroidal transformers (2,200 VA each), epoxy-filled enclosures
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Capacitors: 4 British patented bulk storage capacitors, total 188,000 µF (4 × 47,000 µF)
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Output Stage: 32 high-current output transistors
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Cooling: Dual cooling fans with automatic speed control
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Speaker Terminals: Michi custom high-current 5-way rhodium-plated binding posts; dual output binding posts suitable for bi-wire installations
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Control & Integration: Ethernet network with IP control (DHCP/Static), RS232 control, IR remote sensor
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Network Standby / Wake: Normal standby < 0.5 W; Network wake/standby < 2 W (when enabled)
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12V Trigger: 3.5mm IN/OUT; IN accepts 3V–30V AC/DC trigger; OUT provides 12V trigger when IN is active
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Front Panel Display: Front-panel color display
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Included Remote: RR-RH6 remote control
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Power Requirements: USA 120V, 60Hz; Europe 230V, 50Hz
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Power Consumption: 1200 W
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BTU (4Ω, 1/8 power): 3450 BTU/h
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Dimensions (W × H × D): 485 × 238 × 465 mm (19" × 9.375" × 18.25")
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Front Panel Height: 220 mm (8.625")
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Net Weight: 59.9 kg (132.1 lb)
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Finish: Black
Michi S5 Q&A:
- What kind of amplifier is the Michi S5, and where does it fit in a system?
- The Michi S5 is a high-power stereo power amplifier, designed to be paired with a preamp or processor that provides volume control and source switching.
- How much power does the Michi S5 deliver into 8 ohms and 4 ohms?
- It delivers 500 watts per channel into 8Ω and 800 watts per channel into 4Ω, giving it the headroom to drive demanding speakers with ease.
- Does the Michi S5 support balanced connections?
- Yes—along with standard RCA inputs, the S5 includes balanced XLR inputs and a rear-panel selector to choose the input type.
- Can the Michi S5 be integrated into a control system or smart home setup?
- Yes. It supports Ethernet/IP control, RS232 control, and 12V trigger connections for seamless custom integration.
- What speakers work best with the Michi S5?
- The amplifier supports a 4Ω minimum load and is recommended for speakers with a nominal impedance of 4Ω or higher, including many high-end floorstanders and reference monitors.
- Can I bi-wire my speakers with the Michi S5?
- Yes. The S5 provides dual output binding posts that are ideal for bi-wire setups, allowing separate HF and LF wiring per channel.
- Does the Michi S5 run hot, and how is it cooled?
- High-power amplifiers generate heat under load, and the S5 uses dual cooling fans with automatic speed adjustment to help maintain stable operating temperatures.
- What are the key performance specs that impact sound quality most?
- Highlights include very low THD (<0.008%), high SNR (120 dB), wide bandwidth response up to 100 kHz, and a damping factor of 350 for strong speaker control.
Michi S5 Downloads:
Michi S5 Manual
Michi S5 Specifications Sheet
Michi S5 Drawing
