HK 3770


Harman Kardon HK 3770 stereo receiver

$449.95449.95 each
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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# HK3770AM

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: 1.800.336.4525

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HK 3770 is rated 4.3 out of 5 by 18.
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
Rated 5 out of 5 by from Wow I replaced my 20 yr. Old H.K.avr 520 with the 3770. I don't watch movies I listen to music, and i up dated me cerwin vagas to the new cerwin vega sl 12 .I challenge you to find a cleaner better sounding system for $ 1,000.00
Date published: 2016-04-30
Rated 5 out of 5 by from great product mine doesn't cut off for no reason, or get hot at -35 db to -45 db. also it has an internal cooling fan that kicks on at higher volumes -10 to +10 db. (max volume) it pushes my jvc 15 (sp-7700) speakers (8 ohms) and a set of bose 701 all (6 ohms) at once. only reason it would cut out is if your ohms rating is wrong for the stereo. (6-8ohms) 2 or 4 ohms is too much resistance and 16 ohms is not enough and will not play as loud. i love this amp i am one to put it to the test playing it full blast for hours, and it holds up very well. yes it will cut out if you crank it up for 5 mins turn it down 30 seconds then turn it up back and forth. fan cuts off when you turn it down and if you turn it up right away it does not give enough cool down time before fan turns back on... so if you gonna do it loud keep it loud or leave it down for about 10 mins between sudden bursts. (thats with all audio systems though) older systems did not have self protect mode from heat. and i cant speak for the older hk model cause i don't have one i got the hk3770. which was an upgrade from my pioneer 1986 yeah sa-1270. electronics are all sensitive!!!! this is a bi amp capable amp for bi amp speakers or you can run 2 sets that are not bi amped
Date published: 2016-02-23
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Can a graphic equalizer be hooked up to a hk3770?

Asked by: Denny280
Unfortunately, it cannot be done since the HK3770 does not have PRE OUTS. What you can possibly do is connect the graphic equalizer in between the source and the receiver.
Answered by: Ren at Customer Service
Date published: 2017-10-17

Does this receiver give me the function of adding a low passa filter to the subwoofer and a high pass filter to the main speakers, making a crossover point in order to play the bass in the subwoofer?

Asked by: Victor Affonso Damas
You might find the answer to your question in our Product Support FAQ and knowledge base sections. The link is located at the top of this page. To submit a support case, please fill out the Contact Us form at the same location.
Answered by: Ren at Customer Service
Date published: 2017-10-17

Can you hook up a subwoofer to it

Asked by: Dpaezrivera
Yes you can, There is a Subwoofer connector at the back of the HK 3770.
Answered by: Ren at Customer Service
Date published: 2017-10-17

I have just purchased HK3370 and being the first receiver I have ever owned I do have a couple of questions: 1. What is the purpose of network connection(i can play songs from devices via bluetooth) 2. Can i use an external HDD?

Asked by: alexr
The HK 3770's network connection allows you to stream internet radio and audio files (MP3 and WMA) from DLNA&reg;-compatible devices. Bluetooth connection is available but does not require network connection. The USB connection is used to play audio files from Apple devices and flash drives (FAT format) only. The USB input does not support external HDDs.
Answered by: Joe G at Customer Service
Date published: 2017-10-17

will your network receivers connect to sirius/xm internet radio?

Asked by: Bob824
Yes, it will definitely connect but please make sure you connect the HK 3770 to your network by using RJ45 cable.
Answered by: Joe G at Customer Service
Date published: 2017-10-17

Can the auto shutoff be disabled? This receiver only stays on for 8 hours. I live in city and play background music most of day. At the very least it should be adjustable up to 10 hours.

Asked by: sutton
Unfortunately, this is fixed and cannot be changed.
Answered by: Joe G at Customer Service
Date published: 2017-10-17

Bluetooth is included here,which version? is it Aptx standard for minimum compression? What sort of circuitry techniques are used for maximum res audio quality ? Can speakers be connected directly? Which speaker rating is recommended ? thanks ron

Asked by: ronphi63
Dear Ron, Thank you for your questions, I will try to answer them as best as possible: - Yes, the HK3770 has Bluetooth, this is version 4.0 - Sadly, APTX is not supported by the HK 3770 - Speakers can be connected directly to the receiver, either by inserting the cable directly, or with speakerplugs on the cable ( banana plugs ) - The HK3770 has 2 x 120W channels @ 6/8 ohm In regards to your question about which circuitry techniques are used, we are not able to answer that question here, since that is proprietary information. I hope this answers your questions, but of course if you need more information, do not hesitate to contact us on customer.support@harman.com, we'll be happy to assist you
Answered by: Kay Harman
Date published: 2017-10-17

Hi, I would like to ask you what source needs to be chosen on HK3770 if I would like to play music through Harman Remote? Thanks David

Asked by: Deff
The Harman Kardon Remote App controls virtually all the functions of HK 3770 that are connected to the same network as the device that has the app installed. You can select any source that is connected to the HK 3770.
Answered by: Miko at Customer Service
Date published: 2017-10-17
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