HK 3770


Harman Kardon HK 3770 stereo receiver

£499.99499.99 per system
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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. The HK 3770 also features HARMAN GreenEdge™ technology combines an environmentally friendly design with dramatic energy savings; all while maintaining HARMAN’s premium performance.

Item# HK 3770/230

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
  • 1 Harman Kardon HK 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
HK 3770 is rated NaN out of 5 by 14.
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
Rated 5 out of 5 by from Good affordable high current amplifier! Excellent receiver! The only thing I consider important that need to be said is that you need to get the update from harman pardon european site version V000.17 it comes with V000.16 and it adds Balance controls in the tone control button of the remote controller It is in th download section at then end, unzip the file and you will find a pdf with all the instructions to install this very important upgrade http://eu.harmankardon.com/harman-kardon-product-support-detail-eu/hk-3770.html
Date published: 2015-03-28
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Does this have a loudness contour?

Asked by: Jd boise
Yes. The HK 3770 has a loudness contour labeled as &ldquo;Tone Control&rdquo; on the remote control.
Answered by: Miko at Customer Service
Date published: 2017-03-15

I love Harman products! I have an older H-K receiver with two midsize Infinity bookshelf speakers and a large Infinity subwoofer. The speakers still sound great, but I'd consider updating the receiver. Would Infinitys do well with the 3770?

Asked by: Considering
I'm glad you love our products. The HK3770 can drive up to 120W to a 6/8-ohm load speaker. So as long as your Infinitys are rated at 6/8 ohm and can handle up to 120W of RMS power, they will work great with the HK3770.
Answered by: Joe G at Customer Service
Date published: 2017-03-14

I have a HK3770 receiver, when I first got it the bluetooth worked fine with my iPhone now it doesn't. It works with my ipad2 but not my iPhone 6. my phone doesn't see it when i run search for device. Help

Asked by: peter j
To wirelessly stream audio to the HK 3770 from a Bluetooth-enabled device using the front panel control or the remote control: 1. Press the Bluetooth button. 2. Press the Menu button. 3. Select the Option menu using the Up and Down navigation buttons and press OK. 4. Press OK when the Force pairing message appears. 5. Use the Bluetooth pairing menu from the device you want to connect to the HK3770. The system will appear as HK3770_BT in the list of Bluetooth available devices. If you want to connect a different or new device, you will need to restart the whole procedure. Also, please try forgetting/un-pairing the HK3770 on your iPhone 6 before reconnecting.
Answered by: Miko at Customer Service
Date published: 2017-03-13

Hello, I'd be interested in any info on an AVR 247, including when it was in production, brief specs and price range. I'm looking at one for sale, used, and could use this info. Thanks, Jeff

Asked by: Jeffo
The AVR 247 is a Audio/Video Receiver With Dolby Digital, DTS &amp; HDMI Switching (65W x 2 | 50W x 7). During the time that it was available (2007), it retailed for $499. If you need further help, please submit a case request at www.harmankardon/support-contact.html and the Customer Service team will be more than happy to assist you.
Answered by: Joe G at Customer Service
Date published: 2017-03-09

Does the HK 3770 have a Loudness function/button? Does it also have a Treble and Bass control, if so how many decibels (ex. +10 dB)?

Asked by: Benb
Yes, HK3770 has all the functions that you are looking for, including Treble and Bass up to +10 decibels.
Answered by: Erik at Customer Service
Date published: 2017-03-04

I have an old pair of Polk Audio monitor 10b speakers, 6 ohm, will this receiver run those ok? How is the bass output from this receiver? Just tried an Onkyo tx 8160 very weak to these speakers. How would i run Pandora on this HK. Yamaha rs700 vs. HK?

Asked by: DGC1
Yes it will run fine but it will not play the full capacity of the speakers. The Polk Audio Monitor 10B has a recommended amplifier power of 20-250W at 6-ohms. The HK 3770 can produce power of up to 120W per channel at 6/8-ohms. The Onkyo TX-8160 is almost the same with 110W at 6-ohms. It will slightly sound better with the HK3770 than with the Onkyo receiver. As for the bass output, the Polk speakers will not play any bass frequency below 25Hz even if the HK3770 can provide 10Hz bass output. To play Pandora, you may connect it either via Bluetooth or through a 3.5mm to RCA adapter for a wired connection. The Yamaha A-S700 is rated at 150W at 6-ohms, it will produce more power than the HK3770.
Answered by: Miko at Customer Service
Date published: 2017-02-28

How can I connect my apple device to Harman Kardon receiver through Bluetooth

Asked by: Ming
The Bluetooth button is used to set the stereo receiver in to Bluetooth pairing mode. You can pair the HK 3770 system with Bluetooth-enabled devices, including apple device, using this button.
Answered by: Joe G at Customer Service
Date published: 2017-02-23

Hi , I'm using HK 3770. It is really very nice product but I have some question about support for non latin symbols. I cannot use Ukrainian names for folders from USB and network (DLNA). Could you add support for currylic characters?

Asked by: aperey
Unfortunately, the HK 3770 does not have the capacity to install language packs.
Answered by: Memen at Customer Service
Date published: 2017-02-21
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