Rotel A11 MKII Silver

Rotel A11 MKII Stereo Integrated Amplifier

The Rotel A11 MKII is a stereo integrated hi-fi amplifier that combines audio performance, features, and design. Its Class AB amplification delivers 50 W per channel into 8 ohms, increasing to 62 W per channel into 4 ohms, allowing it to adapt to different speaker loads. The total harmonic distortion rate is less than 0.03% across the entire audible bandwidth, from 20 Hz to 20 kHz.

Meticulous Audio Design for Faithful Reproduction

The device’s power supply is based on an oversized toroidal transformer, custom-designed by Rotel. This linear power supply, combined with numerous capacitors, ensures a significant and stable current reserve, allowing the amplifier to maintain its performance even under demanding listening conditions or with speakers known to be difficult to drive.

The frequency response of the A11 MKII is impressive, extending from 10 Hz to 100 kHz (±0.5 dB) for line inputs, and from 20 Hz to 20 kHz (±0.5 dB) for the phono input. The signal-to-noise ratio reaches 90 dB for line inputs and 85 dB for the phono input, ensuring clear and detailed sound reproduction.

Connectivity and Versatility

The Rotel A11 MKII offers extensive connectivity to meet the needs of modern audiophiles. The analog section includes three stereo RCA line inputs and a MM (Moving Magnet) phono input with a grounding pin, allowing direct connection of a turntable.

For digital sources, the amplifier is equipped with an optical input and a coaxial input. These inputs are paired with a Texas Instruments 32-bit / 384 kHz digital-to-analog converter (DAC), capable of processing high-resolution audio files up to 24-bit / 192 kHz.

The A11 MKII also integrates a Bluetooth module with support for aptX HD and AAC codecs, offering CD-quality wireless audio streaming from compatible devices such as smartphones, tablets, or computers.

On the front, a 3.5 mm jack headphone output allows for personal listening. At the back, there is a pair of gold-plated speaker terminals, compatible with banana plugs and spades.

Features and Control

The amplifier features tone controls for bass and treble, offering an adjustment of ± 10 dB at 100 Hz and 10 kHz respectively. These settings allow users to fine-tune the sound signature according to their preferences or the acoustic characteristics of the listening room.

The Rotel A11 MKII comes with an infrared remote control, providing convenient remote operation of the main functions of the device. Additionally, two 12V trigger switches are available for integration into home automation systems or for synchronization with other compatible devices.

Sound Quality and Listening Experience

The Rotel A11 MKII stands out for its sound neutrality and transparency, offering faithful and detailed music reproduction. The soundstage is wide and well-defined, allowing for precise localization of instruments and vocals.

The bass is dynamic and well-controlled, providing a solid foundation for musical reproduction. The midrange is natural and rich in nuances, while the treble is characterized by its clarity and lack of aggressiveness. The overall dynamics are excellent, allowing the amplifier to effortlessly handle both delicate and intense passages.

This sound quality, combined with the available power, allows the Rotel A11 MKII to harmoniously pair with a wide range of speakers, from compact models to more imposing floor-standing ones.

A Versatile Amplifier, the Cornerstone of an Affordable Hi-Fi System

Thanks to its remarkable sound performance and comprehensive connectivity, the Rotel A11 MKII integrated amplifier is an excellent choice for building a quality stereo hi-fi system on a reasonable budget. Its transparency and musicality allow it to match a wide selection of speakers, while its extensive connectivity makes it the versatile heart of a home theater or living room listening setup. Pairing it with the Rotel CD11 MKII CD player, for example, forms a coherent and highly recommended combination.

Technical Specifications

Main Features

• Output power: 2 × 50 W (class AB, 8 Ω)
• Bluetooth with high-definition codecs aptX HD and AAC
• High-end 32-bit, 384 kHz Texas Instruments digital-to-analog converter (DAC)
• Remote control included

Audio Performance

• Output power:
  • 50 W / channel (8 Ω)
  • 62 W / channel (4 Ω)
• Total harmonic distortion: < 0.03%
• Frequency response:
  • Line inputs: 10 Hz - 100 kHz, -0.5 dB, + 0.05 dB
  • Phono input: 20 Hz - 20 kHz, -0.5 dB, + 0.3 dB
  • Digital inputs: 20 Hz - 20 kHz, -0.15 dB, + 0 dB
• Signal-to-noise ratio (IHF “A” weighted):
  • Line inputs: 90 dB
  • Phono input: 85 dB
• Intermodulation distortion (60 Hz:7 kHz, 4:1): < 0.03%
• Damping factor: 120

Inputs and Sensitivities

• Input sensitivity:
  • Line inputs: 130 mV
  • Phono input (moving magnet - MM): 1.6 mV
• Input impedance:
  • Line inputs: 45 kΩ
  • Phono input (moving magnet - MM): 43 kΩ
• Input overload threshold:
  • Line inputs: 4 V
  • Phono input: 50 mV
• Digital input sensitivity/impedance: -20 dBFS, 75 Ω
• Tone controls: ± 6 dB at 100 Hz, 10 kHz
• Coaxial/optical inputs: SPDIF LPCM (up to 24 bits, 192 kHz)

Connectivity

• 3 stereo RCA analog inputs
• 1 moving magnet phono input for turntable
• 1 6.35 mm headphone output (front panel)
• 2 12 V trigger outputs
• 1 optical input and 1 coaxial input
• Dual screw terminals compatible with banana plugs

Dimensions and Weight

• Dimensions (W × H × D): 430 × 73 × 347 mm
• Front panel height: 60 mm
• Net weight: 6.8 kg

Power Supply and Consumption

• Power supply: 230 V, 50 Hz
• Power consumption: 150 W
• Standby power consumption: < 0.5 W
• Thermal dissipation (4 Ω, 1/8 of rated power): 450 BTU/h