Important Safety Instructions
WARNING: No user serviceable parts inside. Refer all servicing to qualified service personnel.
WARNING: To reduce the risk of fire or electric shock, do not expose the unit to moisture or water. Do not expose to dripping or splashing. Do not place liquid-filled objects (e.g., vases) on the unit. Prevent foreign objects from entering the enclosure. If exposed to moisture or a foreign object, immediately disconnect the power cord and take the unit to a qualified service person for inspection and repairs.
Read and keep these instructions. Heed all warnings and follow all instructions.
Do not use this apparatus near water. Clean only with a dry cloth.
Do not block ventilation openings. Install according to manufacturer's instructions.
Do not install near heat sources like radiators, stoves, or other apparatus that produce heat.
Do not defeat the safety purpose of polarized or grounding-type plugs. If the provided plug does not fit your outlet, consult an electrician.
Protect the power cord from being walked on or pinched, especially at plugs and where they exit the apparatus.
Only use attachments/accessories specified by the manufacturer.
Use only with specified carts, stands, tripods, brackets, or tables. Use caution when moving wheeled carts to avoid tip-over injuries.
Unplug during lightning storms or when unused for long periods.
Refer all servicing to qualified service personnel. Servicing is required for damage such as a damaged power cord/plug, spilled liquid, foreign objects, exposure to rain/moisture, abnormal operation, or dropping.
The apparatus should be used in non-tropical climates.
Ensure ventilation openings are not impeded by items like newspapers or curtains. Do not place naked flame sources (e.g., lighted candles) on the apparatus.
Touching uninsulated terminals or wiring may cause an unpleasant sensation.
Maintain a minimum 10 cm (4 inches) of unobstructed clearance around the unit.
WARNING: The rear panel power cord connector is the mains power disconnect device. It must be located in an open area allowing access to the connector.
Connect the unit to a power supply of the type and voltage specified on the rear panel (USA: 120V/60Hz, EC: 230V/50Hz). Use only the supplied power supply cable or an exact equivalent. Do not modify the cable or use extension cords.
The mains plug is the unit's disconnect device. To completely disconnect from the mains, remove the plug from the unit and the AC power outlet.
Use Class 2 wiring for speaker connections to ensure proper installation and minimize electrical shock risk.
Remote control batteries should not be exposed to excessive temperature. Recycle or dispose of batteries according to local guidelines.
This device complies with Part 15 of the FCC Rules. Operation is subject to conditions: (1) it may not cause harmful interference, and (2) it must accept any interference received.
This product must be connected to a MAINS socket outlet with a protective earthing connection. The MAINS plug or appliance coupler serves as the disconnect device and shall be installed near the equipment and easily accessible.
Rotel products comply with RoHS and WEEE directives. The crossed wheelie bin symbol ?️ indicates compliance and the need for appropriate recycling or processing.
A double insulation symbol ⛋ indicates an earth connection is not required.
Controls and Connections
Figure 1 illustrates the controls and connections.
- 1: Power Button: Activates the unit or puts it into standby mode.
- 2: Power Indicator: Shows the unit's status.
- 3: Headphone Output: Connect headphones for private listening (standard 3.5mm mini stereo connector). Note: Reducing volume before connecting/disconnecting headphones is recommended due to varying sensitivities.
- 4: Remote Sensor: Receives IR commands from the remote control. Do not block this sensor.
- 5, 6, 7: Balance / Bass / Treble Buttons: Audio control buttons.
- 8: Volume Knob: Adjusts the volume output level.
- 9: Source Button: Selects the input signal source.
- 10: Bluetooth Antenna: For wireless streaming via Bluetooth.
- 11: Power Control Slider: Sets the unit to standby mode or automatically turns off when there is no signal or operation.
- 12: Service Port: For factory use only.
- 13: 12V Trigger Output: Sends a 12V trigger signal when powered on to control other components.
- w: Ground Connector: Connect a "ground" wire from a turntable to prevent hum and noise.
- e: Phono Input: Connect a turntable.
- r: CD / Tuner / Aux Inputs: Analog "line level" inputs for CD players, tuners, etc. Connect Left (white) and Right (red) channels using RCA cables.
- t: Digital Signal Inputs: Connect coaxial or optical PCM outputs from source components. The unit decodes digital signals up to 24-bit, 192kHz.
- y: Speaker Connectors: For connecting speakers.
- u: AC Power Input: Connects to the power outlet.
RR-AX1402 Remote Control
Figure 2 shows the remote control. Functions can be operated via front panel controls or the remote.
- A: Power Button: Activates or deactivates the unit.
- B: DIM Button: Cycles the brightness of the power indicator, source LEDs, and volume knob LED.
- C: Volume Button: Adjusts the volume output level.
- D: Mute Button: Mutes the audio.
- E: Play/Stop/Pause/Eject Buttons: Control audio playback (for CD players).
- F: PRESET +/- Buttons: Control fast reverse and fast forward of audio (for audio players).
- G: SOURCE Buttons: Selects the input signal source.
- H: Numeric Buttons: Direct access to tracks or preset stations.
- I: TUNE +/- Buttons: Control previous/next track or station.
Remote control requires two AAA batteries (supplied). Install batteries by removing the back cover.
Preamp Input and Speaker Output Connections
Figure 3 illustrates how to connect sources and speakers. Ensure the system is turned off before making connections.
Speaker Connection: Use insulated two-conductor stranded wire. Heavier gauge wire can improve sound. Ensure consistent polarity and phasing for all speaker connections to maintain proper stereo imaging and bass response. Wire is marked to identify conductors (e.g., ribs, stripes, different insulation colors).
Important Notes
When making connections:
- Turn off all system components, including loudspeakers, before connecting or changing connections.
- Turn the amplifier's volume control down completely before turning the amplifier on or off.
About Rotel
Rotel has been manufacturing high-fidelity audio components for over 60 years, founded by a family passionate about music. The company focuses on uncompromising quality, exceptional value, and meticulous engineering. Rotel engineers select components globally to achieve exacting musical standards, and the company is committed to environmental responsibility, using lead-free solder and optimizing power efficiency. Rotel's factory also implements greener manufacturing processes.
Getting Started
The A11MKII Stereo Integrated Amplifier provides years of musical enjoyment in a high-quality audio system. It features a full-range, high-performance design with a regulated power supply and a custom-designed toroidal power transformer for ample power reserves. Symmetrical circuit traces, metal film resistors, and polystyrene/polypropylene capacitors ensure precise timing and faithful music reproduction.
Installation and use are straightforward. Plug in associated components and enjoy.
A Few Precautions
WARNING: To prevent system damage, turn off ALL components before connecting or disconnecting loudspeakers or associated components. Ensure all connections are correct and secure before powering on. Pay attention to speaker wires to prevent loose strands from shorting.
Read this manual carefully for system integration and optimal performance. Contact your authorized Rotel dealer for questions.
Save the original shipping carton and packing material for future use to prevent damage during shipping or moving.
Complete the owner's registration card or register online. Keep your sales receipt for warranty service.
Placement
Avoid placing the amplifier on top of other components. Route audio signal cables away from power cords to minimize hum or interference.
The unit generates heat; ensure ventilation slots in the top cover are open. Maintain 10 cm (4 inches) clearance around the chassis for proper airflow to prevent overheating.
Ensure the installation location's shelf or cabinet can support the amplifier's weight. Consider furniture designed for audio components to reduce vibration.
The A11MKII requires placement where the remote control's infrared signal can reach the front panel Remote Sensor.
Cables
Keep power cords, digital signal cables, and audio signal cables separated to prevent noise or interference. Use high-quality, shielded cables for best sound quality.
AC Power and Control
AC Power Input
The unit is factory-configured for the AC line voltage of the purchase country (120V AC or 230V AC, 50Hz or 60Hz). Configuration is noted on a back panel decal.
NOTE: Reconfiguring for a different voltage is possible but should only be done by a qualified service person. Opening the unit exposes you to dangerous voltages.
NOTE: Use only the AC cord appropriate for your country/region.
Plug the unit directly into a polarized wall outlet using the supplied cable or a recommended compatible cable. Do not use extension cords. A heavy-duty multi-tap power outlet strip may be used if it and the wall outlet can handle the total current demand.
For extended absences (e.g., month-long vacation), unplug the amplifier and other audio/video components.
Power Switch Ⓐ and Power Indicator 2
Press the front panel Power Switch button to turn the unit on; the Power Indicator light illuminates. Press again to turn off. When the power switch is ON, the remote control ON/OFF buttons (A) can activate the A11MKII. The indicator light is red in Standby mode.
Refer to the "12V Trigger Outlet" section for controlling other components.
12V Trigger Out q
Two 12V Trigger Outputs can automatically turn on compatible components when the amplifier is powered on. Use a 3.5mm mini plug cable. When the amplifier is turned off, the trigger signal is interrupted, turning off controlled components.
Input Signal Connections
NOTE: Turn the system off before making any signal connections to prevent loud noises.
Phono Input e and Ground Connection w
Connect turntable cables to the left and right phono inputs. Connect the turntable's "ground" wire to the screw terminal left of the Phono inputs to help prevent hum and noise.
Line Level Inputs r
These inputs (CD, Tuner, Aux) are for analog audio outputs from components like CD players. Connect Left (white) and Right (red) channels using high-quality RCA cables.
Digital Signal Inputs t
Connect coaxial or optical outputs from source components. The amplifier decodes PCM signals up to 24-bit, 192kHz.
Speaker Outputs y
Use insulated two-conductor stranded wire for speaker connections. Heavier gauge wire can improve sound. Ensure consistent polarity and phasing for all speaker connections.
Speaker Connection
Use either binding post or plug-in connections, but not both simultaneously for multiple speakers.
Turn off all components before connecting speakers. The unit has color-coded binding post connectors (except in EC countries where their use is not permitted). These accept bare wire, connector lugs, or dual banana plugs.
Route wires with sufficient slack. For dual banana plugs, connect to wires and plug into binding posts. Screw thumbscrews clockwise.
For terminal lugs or bare wires, strip insulation carefully. Unscrew thumbscrews counterclockwise, place connector/wire around the post shaft, and screw thumbscrews clockwise to secure. Ensure no loose strands touch adjacent wires or connectors.
IR Remote Sensor 4
This window receives IR commands. Do not block it.
Headphone Output 3
Connect a standard 3.5mm mini stereo headphone connector for private listening. Plugging in headphones does not cut off the signal to the main outputs.
NOTE: Reduce volume before connecting/disconnecting headphones due to varying sensitivities.
aptX™ HD Bluetooth Connection 0
Use the Bluetooth Antenna for wireless streaming from devices like mobile phones, tablets, or computers. Look for "Rotel Bluetooth" and connect. A password "0000" may be required. Supports traditional Bluetooth, AAC, and aptX™ HD audio streaming.
Power Control -
The Power Control slider offers two automatic power-saving modes:
- SIGNAL SENSE: The unit checks for a digital signal. If no digital audio is detected for 10 minutes, it enters Signal Sense Power Mode. It powers on automatically when digital audio is detected.
- APD (AUTO POWER DOWN): The unit powers off to standby mode if there is no audio signal for 20 minutes. The timer resets if volume, source, or playback changes.
To disable these functions, slide to the NONE position.
NOTE: When entering standby via the remote, Signal Sense will not operate until audio has stopped for 10 minutes to prevent immediate power-on.
NOTE: Signal Sense mode consumes additional power.
SERVICE Connector =
This connector is for use by Authorized Service Centers only.
Audio Controls
Volume Control 8C
Turn the knob clockwise to increase volume, counter-clockwise to decrease. Use remote buttons C (+/-) for volume adjustment. Press button D to mute audio.
Balance Control 5
Adjusts left-to-right sound balance. Center position is normal. Adjust as needed for optimal listening position. Counter-clockwise shifts balance left; clockwise shifts right.
Bass and Treble Controls 67
Turn knobs clockwise to increase bass/treble, counter-clockwise to decrease. Use sparingly, as excessive adjustment can increase load on the amplifier and speakers.
NOTE: Bass and Treble controls are bypassed by default for purest sound. Turn the knobs to adjust.
Source Input Selector 9G
Press the corresponding input button on the front panel (9) or remote control (G) to select the desired listening source.
LED Dimmer Control B
Press the DIM B button on the remote control to change the brightness of the power indicator, source LEDs, and volume knob LED.
Protection Circuit
The unit has thermal and over-current protection circuitry to prevent damage from extreme or faulty conditions. These circuits monitor output device temperature and shut down the amplifier if safe limits are exceeded. The protection circuits do not affect sonic performance.
If a fault occurs, the amplifier stops playing, and the POWER indicator (2) turns red. Turn the amplifier off, let it cool, and identify/correct the problem. The circuit resets automatically upon power-on, and the indicator should turn blue.
Protection circuits typically activate due to shorted speaker wires, inadequate ventilation, or overheating. In rare cases, low impedance speaker loads can trigger it.
If the protection circuit triggers repeatedly, contact your authorized Rotel dealer for assistance.
Troubleshooting
Most difficulties stem from incorrect connections or settings. Isolate the problem, check settings, and make necessary changes.
Power Indicator Is Not Illuminated
Ensure the unit is plugged in and the Power button is pressed. Test the power outlet with another device. Verify the outlet is not controlled by a switch.
Fuse Replacement
If other devices work but the Power Indicator does not light, the internal power fuse may have blown. Contact your authorized Rotel dealer for fuse replacement.
No Sound
Check the signal source, ensure cables are properly connected, verify the correct input is selected, and check speaker wiring.
Cannot Connect via Bluetooth
On your device, delete the previous Bluetooth connection memory (e.g., "Forget this Device") and try connecting again.
Specifications
Power Output
50 watts/channel (8 ohms), 62 watts/channel (4 ohms)
Distortion
Total Harmonic Distortion: < 0.03% (20 Hz - 20k Hz)
Intermodulation Distortion: < 0.03% (60 Hz : 7k Hz, 4:1)
Frequency Response
Phono input: 20 Hz-20k Hz, -0.5 dB, +0.3 dB
Line Level Inputs: 10 Hz - 100k Hz, -0.5 dB, +0.05 dB
Damping Factor
120 (20 - 20,000 Hz, 8 ohms)
Input Sensitivity / Impedance
Phono input: 1.6 mV / 43k Ohms
Line Level Inputs: 130 mV / 45k Ohms
Input Overload
Phono input: 50 mV
Line Level Inputs: 4 V
Tone Controls
Bass / Treble: ± 6 dB at 100 Hz / 10k Hz
Signal to Noise Ratio (IHF "A" weighted)
Phono input: 85 dB
Line Level Inputs: 90 dB
Digital Section
Frequency Response: 20 Hz - 20k Hz, -0.15 dB, +0 dB
Input Sensitivity / Impedance: -20 dBFS / 75 ohms
Digital Inputs: SPDIF LPCM (up to 192k Hz 24 bit)
Power Requirements
120 V, 60 Hz (USA)
230 V, 50 Hz (Europe)
Power Consumption
150 Watts
Standby Power Consumption
Normal: < 0.5 watts
BTU
450 BTU/h (4 ohms, 1/8 power)
Dimensions (W, H, D)
430 x 73 x 347 mm (17" x 2 7/8" x 13 5/8")
Panel Height
60 mm / 2 3/8"
Weight (net)
6.8 kg, 15 lbs.
All specifications are accurate at the time of printing. Rotel reserves the right to make improvements without notice.
The Rotel logo is a registered trademark of The Rotel Co., Ltd. Tokyo, Japan.
Contact Information
The Rotel Co. Ltd.
Tachikawa Bldg. 1F., 2-11-4, Nakane, Meguro-ku, Tokyo, 152-0031 Japan
Email: sales@rotel.com
Rotel USA
11763 95th Avenue North, Maple Grove, MN 55369 USA
Phone: +1 510-843-4500 (option 2)
Rotel Canada
Kevro International, 902 McKay Rd. Suite 4, Pickering, ON L1W 3X8 Canada
Phone: +1 905-428-2800
Website: www.rotel.com
