HK 3770


Harman Kardon HK 3770 stereo receiver

$399.95399.95 each $449.95 Save $50
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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.

Harman Kardon does not service warranty claims for 3rd party products sold on the site.
You will need to need to reach out the manufacturer directly.

Call us: 1.800.422.8027

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  • Technical help
  • Parts and accessories
HK 3770 is rated 4.3 out of 5 by 27.
Rated 5 out of 5 by from HK 3770 is the Bomb! Just set this up, super easy; remote is a little hard to figure at first but is solid. The sound this thing reproduces is clean, rich, good lows, solid mids. My setup is 2x JBL Studio L890 towers and JBL Studio Sub 250P. It can push some some serious power and the Harman Sound button is a nice feature.
Date published: 2018-11-25
Rated 5 out of 5 by from Best value !!! I purchased the receiver a few months ago and wanted to share my pleasure with it. I am using it to drive a pair of PSB Synchrony II bookshelf speakers with a load of 4 ohms. The receiver drives these speakers with ease and sounds terrific. I have downsized from a much larger system ( due to a move to a retirement home ) and have no regrets whatsoever. All and all, this receiver is an outright best buy .
Date published: 2018-09-28
Rated 5 out of 5 by from Everything I was looking for. Box came smashed in from shipping company but thanks to the packaging it was undamaged, thank goodness! This thing is bomb! The sub out was a must have for my reciever. Bluetooth connects perfect with my Note 8, also a must have. Ample power, great product! Missing smart home connectivity.
Date published: 2018-07-12
Rated 5 out of 5 by from Great Receiver with a Quirky Remote I have had HK amplifiers/AVRs since the 70's. As happy with the Factory Refurbished HK3770 as I was with the others. Great sound with lots of features and plenty of power at a great price. Nice compact size to fit in tighter spaces. I hope this lasts as long as my other HKs. Due to the different types of source selector buttons on the remote and the way they are allocated to the inputs, getting the different inputs programmed on my Harmony 650 remote was a little tricky and sometimes takes two button pushes to select a desired input. Maybe I will figure it out eventually. Also did not get an Owner's Manual, just a quick start guide with the receiver but I found the Owner's Manual on-line.
Date published: 2018-04-12
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
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I have a HKTS 30 and will this receiver work with it

Asked by: Akumar
The HK 3770 would work wattage wise but since it's a stereo receiver and has 2 terminals which means you can only fit 2 speakers to this receiver.
Answered by: Mario at Customer Service
Date published: 2018-11-27

Hi, I renently purchased the HK 3770 from Crutchfield. Excellent unit! I just wanted to ask a question concerning the optical inputs; Can I use one of the optical inputs on the 3770, fed from a DAC that is playing FLAC audio? Thanks.

Asked by: TommyD
If you are using a DAC, I will assume you are using the analog output of your source, which is playing the FLAC files. The DAC is converting the analog source to digital, which is then connected to the optical input on the HK3770. If all of this is correct, it doesn't matter what format the file was (FLAC, MP3, etc.) when it started being that it was sent through an analog output to the DAC, so it will work perfectly fine.
Answered by: Mario at Customer Service
Date published: 2018-11-23

Is this compatible with the Bose Accoutimass 10 Home Theater Sound System with 5 speakers

Asked by: Perypoo
The HK3770 is only capable of having stereo sound and has 2 left channels and 2 right channels , having 5 speakers would not have enough terminals for the last one. If you're planning on surround sound I would suggest a 5.1 surround sound receiver.
Answered by: Mario at Customer Service
Date published: 2018-10-30

Can I bi wire my JBL studio 590's with the 3770

Asked by: Nelly
Hi! Yes it is possible to bi-wire the JBL Studio 590's to the HK 3770 stereo receiver.&nbsp;
Answered by: Nick F
Date published: 2018-10-16

Can this receiver handle a pair of old AR-3a 4 ohm speakers and how many watts/ channel are there with a 4 ohm impedance

Asked by: pablow
Hello! The HK 3770 is capable of giving out&nbsp;120W x 2 into 8 ohms. But since your speakers are rated at 4 ohms, it means that wattage will be doubled bringing it up to 240W per channel.
Answered by: Nick F
Date published: 2018-10-10

This question was asked before but no real answer was given. What is the crossover frequency to the Subwoofer? Can this be set by the user to match the performance of the main speakers?

Asked by: rtrevi30
The sub output freq is not adjustable. Use a powered sub with it's own crossover will yield the results you are looking for. If your sub has selectable crossover adjustment, you can tailor the frequency at that end, not at the output of the receiver.
Answered by: Lefty71
Date published: 2018-11-06

Could I power two pairs of 8&quot; ceiling speakers (so 4 speakers total) at 8 ohms with one of these amps? Here are the speaker specs: Power Handling Capacity (RMS) 80 watts Power Handling Capacity (Peak) 160 watts

Asked by: bigdavid961
Hi! Yes, you could use the HK 3770 with the 8&quot; ceiling speakers without any issues.
Answered by: Nick F
Date published: 2018-11-28

What digital formats are compatible with the optical input and/or internal DACC?

Asked by: CBug
The HK 3770 doesn't support bitstream/multi-channel digital audio. It accepts PCM stereo up to 192kHz/24bit resolution.
Answered by: Steve S
Date published: 2018-09-05
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