HK 3770 Stereo Amplifier

Harman Kardon Singapore

High-performance stereo receiver with 240 watts of power, analog and digital inputs, and networked connectivity

Harman Kardon’s reputation for excellence in sound quality and distortion-free power has moved forward to combine classic analog sound with modern digital connectivity. Discover 240 watts of power in a stereo receiver dedicated to complete connectivity for all your devices. The high-performance Harman Kardon HK 3770 stereo receiver delivers everything you need to drive any home audio system. With analog and digital connectivity, it features high power and offers a built-in, 24-bit/192kHz DAC. Connect to your home network via Ethernet to play all your local content over DLNA® 1.5, or connect a storage device or any AppleTM iOS® device via USB. Bluetooth® is also included for high-quality audio streaming from a broad range of devices. And, with built-in FM/AM radio and phono inputs, the HK 3770 eloquently bridges classic and modern audio – making it a truly powerful centerpiece for your home audio system.


Striking Harman Kardon design leverages quality materials in a 2-channel, 240-watt stereo receiver with ultra-low distortion

High-resolution DAC, featuring a 24-bit/192kHz sampling rate

Complete connectivity including a phono input, FM radio, digital audio inputs (1 coaxial/2 optical), home network DLNA®, vTunerTM Internet radio, iOS® Direct with built-in DAC (digital-to-analog converter), or audio file play via USB

Cutting-edge connectivity options, including Bluetooth® for high quality audio streaming from a broad range of devices

The Harman Kardon remote app provides control through iOS® and AndroidTM platforms as part of the Harman Kardon ecosystem

Highlights Connectivity

  • Bluetooth® connectivity

  • Optical and coaxial inputs

  • DLNA® network compatible

  • Built-in 24-bit/192kHz DAC

  • Phono input

  • vTunerTM (Internet radio) streaming

  • Harman Kardon Remote app for compatible iOS® and AndroidTM smartphones and tablet

  • Front-panel USB port for connection to compatible Apple® products or USB flash drive

  • Ultrawide bandwidth

  • A/B speaker selection

  • Headphone output

  • Tape monitor loop

  • Subwoofer output


  • 120W x 2 into 8 ohms, 20Hz – 20kHz, at <0.07% THD, with all channels driven simultaneously

  • High-current (±40 amps)

  • Ultra wide frequency response (@1W) 10Hz – 130kHz (+0dB/3dB) amplifier design

  • Signal-to-noise ratio (IHF-A): 100dB

    FM Tuner

    • Frequency range: 87.5MHz – 108.0MHz
    • Usable sensitivity IHF: 1.3μV/13.2dBf
    • Signal-to-noise ratio (mono/stereo): 70dB/68dB • Distortion (mono/stereo): 0.2%/0.3%
    • Stereo separation: 40dB @ 1kHz
    • Selectivity (±400kHz): 70dB

    AM Tuner Section

  • Frequency range: 110V: 520kHz – 1710kHz, 220-240V: 522kHz – 1620kHz

  • Signal-to-noise ratio: 38dB

  • Usable sensitivity (loop): 500μV

  • Distortion (1kHz, 50% mod): 1.0%

  • Selectivity (±10kHz): 30dB

    HARMAN International Industries, Incorporated 8500 Balboa Boulevard, Northridge, CA 91329 USA

• Bluetooth® connectivity
• Five analog audio inputs • One coaxial audio input
• Two optical digital inputs

• USB input on the front panel to connect an iPod®, iPhone® or iPad® using an Apple® cable (not supplied) or to connect a USB flash drive with music content (MP3, WMA or WAV format)

• One high-quality phono input for connecting to record players with an MM cartridge

• Subwoofer output with trigger for direct connection to powered subwoofers

• One analog-recording output

• Network RJ45 connection to enjoy Internet radio and content from DLNA®-compatible devices that are connected to the network

What’s in the box

• 1 Harman Kardon HK 3770 Stereo Receiver • 1 Remote control
• 2 AAA batteries
• 1 FM radio antenna

• 1 AM antenna loop 1 6’ (1.8m) region-specific IEC power cord • Quick Start Guide


  • Power requirement: 120V AC/60Hz or 220-240V AC/50/60Hz (different models)

  • Power consumption: <0.5W (standby); 480W maximum

  • Dimensions (H x W x D): 4-3/4" x 17-5/16" x 11-13/16" (121mm x 440mm x 300mm)

Collections: Harman Kardon, Harman Kardon X BMW

Category: HK

Type: Unknown Type