HK 3770


Harman Kardon HK 3770 stereo receiver

$314.99 - $449.95

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High-performance 240 watt stereo receiver with analog & digital capacity 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, 192 kHz/24 bit DAC. Connect to your home network via Ethernet, playing all your local content over DLNA 1.5 or connect a storage device or any Apple iOS device via USB. Bluetooth® is included for high quality audio streaming from a broad range of devices. And, with built-in AM/FM radio and phono inputs, the HK 3770 eloquently bridges classic and modern audio – making it a truly powerful centerpiece for your home audio system.

Item# HK 3770

Device Compatibility

Bluetooth Yes

General Specifications

Stereo Power 120 watts per channel, two channels driven @ 6/8 ohms, 20Hz – 20kHz, <0.07% THD
Input Sensitivity/Impedance 250mV/27k ohms
Signal-to-Noise Ratio (IHF-A) 100dB
Frequency Response(@ 1W) 10Hz – 130kHz (+0dB/–3dB)
Power Consumption <0.5W (standby)

System Specifications

Power Requirement 120V AC/ 60Hz (USA); 220V-240V AC 50Hz/60Hz (EU)


Height (in) 4-3/4
Height (mm) 121
Width (in) 17-5/16
Width (mm) 440
Depth (in) 11-13/16
Depth (mm) 300
Click here for a complete list of all specs for this product

Spec Sheet (EN)

English 965 KB
  • 1 Harman Kardon BDS 3770 System
  • 1 FM radio antenna
  • 1 6' (1.8m) region-specific IEC power cord
  • 2 AAA batteries
  • 1 AM antenna loop
  • 1 programmable remote control

2 Year Warranty

Products purchased online or from an authorized local retailer and under warranty may qualify for an exchange with a valid receipt.

Purchases made from an unauthorized dealer will not be eligible for exchange.

Call us: 1.800.422.8027

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HK 3770 is rated 4.4 out of 5 by 20.
Rated 5 out of 5 by from Superior Sound I’ve only had the HK3770 for a few days but I’m just so impressed with its performance, had to write a review. Absolutely 5-Star performance and sounds just amazing. Running with a pair of Pioneer towers and Polk Audio sub, has brought an entirely new life to my HiFi. Super powerful amp with virtually zero distortion. Easy set up with intuitive controls. Even though was a factory recertifed unit, looks absolutely brand new. Flawless!
Date published: 2017-12-27
Rated 5 out of 5 by from HK the best bang for the buck I Just got my HK 3770. I love everything about it. This receiver provides the way music is meant to be heard. I'm charmed! I rarely give recommendations.
Date published: 2017-10-22
Rated 5 out of 5 by from AWESOME Bought this receiver a few weeks ago & installed it today. Wow, it sounds awesome & looks sweet! Mainly purchased to use with my Dual CS 5000 Turntable, Shure M97xE Cartridge & 2 Klipsch R-24F Speakers. Crisp, clear, warm & powerful sound, pushing these speakers excellently. Super happy with this purchase & definitely recommend.
Date published: 2017-03-31
Rated 5 out of 5 by from nice sound I bought this for the phono plug and it was worth it. Nice sound. I'm running JBL L100's & L36's out of the back & playing both together. Easier to use than the audio/video series of stereos that they sell (I have them too). I like this Harman better than any of the others that I own (have a few).
Date published: 2017-02-20
Rated 5 out of 5 by from What an Amp! Don't know a lot of tech details... purchased HK3770 last week... sounds very good with my old technics speakers sb a36...
Date published: 2016-12-18
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I'm attempting to plug in my CD player....regardless of what Aux plug it into, the menu displays as Coax...how do I change it from Coax to the corresponding Aux input I've plugged in to?

Asked by: Hawco458
Using the remote control for your HK3770, press the Aux button to toggle among the different Aux sources for your receiver, e.g., DVD, CD or the tuner. You can also use the source buttons on the front panel of your receiver to do this.
Answered by: Steve S
Date published: 2018-02-17

Does the model that is sold in the US also work in India with 220-240v ? Or there is a different model that needs to be bought only in Asia. Also what is recertified model? Any physical damages or they are as good as new ?

Asked by: Vsam
If you purchased the stereo receiver in the US, then the power will be 120V. However, the HK3700 220-240V version is available in other regions like Europe. Re certified are used products which are restored to like-new functionality and appearance. There may have minor cosmetic imperfections but it works as a brand new product.
Answered by: Nick F
Date published: 2018-02-06

I just bought the HK3770 and am driving a pair of Cerwin Vega speakers that sound awesome. My question is: can I use my headphones while plugged in to the jack on the front of the 3770 while the speakers perform and I play my drums?

Asked by: Bcamp
Unfortunately you can use either the speakers only or the headphones and cannot play at the same time.
Answered by: Mario at Customer Service
Date published: 2018-01-30

Hello! We have 2 or 3 equipments working but, after 8 hours, they get off, changing to standnby mode. Is some way to change this state for never turn off? Thank you

Asked by: Nacho
Hi, It is actually a feature that saves power by turning the receiver to standby mode if there are no inputs or commands taken after 8 hours. One way to stop this from happening is to change the volume every 3-4 fours so it would restart the counter and you can continue playing your receivers. If that does not answer your question,Please submit a case request at https://www.harmankardon.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Mario at Customer Service
Date published: 2018-01-23

I just received my 3770 and I am very satiesfied so far! One question; when I use it on bluetooth and want to switch back to Digital, the unit does not respond to the remote. I have to switch the source on the unit. Is there a reason for that?

Asked by: CasualGard
We would like to work with you directly to help you with your issue. Please submit a case request at https://www.harmankardon.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Mario at Customer Service
Date published: 2018-01-08

Trying to find the vtuner I'd number... can't find the vtuner help menu to get the number, &nbsp;help!

Asked by: Paul 55
The vTuner ID # is on the Help screen in the vTuner source main menu. If you need further assistance, please submit a case request at https://www.harmankardon.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Zoe at Customer Service
Date published: 2018-01-02

What inputs should I use to connect a CD player?

Asked by: CarterB
Hi! There are 5 left &amp; right analog audio inputs available in the HK 3770 - you may use these inputs to connect a CD player. However, there are no video connections available for this stereo receiver.
Answered by: Zoe at Customer Service
Date published: 2017-12-17

&nbsp;I have PSB tower speakers and a big living room. Replacing my Harmon-Kardon 730 receiver (bought new by me &nbsp;in '74). Does the 3770 have enough power? Can I use a fan to cool it? Can I play music though the front USB receptacle or just charge by I-phone?

Asked by: J Steve Day
Comparing the HK730 which provides 40W per channel at 8 ohms, The HK3770 drives 120W per channel at 8 ohms. which is definitely more powerfull than the previous receiver that you had. Please make sure that the PSB tower that you have can handle 120W @8ohms before plugging it in. You can also use your fan to cool the receiver. Regarding the USB ports , you can only connect your USB Flash drive to the USB port on the front and select USB as the Input on your HK3770. Just make sure that the audio formats that you are trying to play are the following: WMA, MP3 or WAV.
Answered by: Mario at Customer Service
Date published: 2017-12-14
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