Harman/Kardon AVR 3700 AV Receiver Specs


Power Output: 7 x 125 watts (6/8 ohms, 2 channels driven)
Auto Setup/Room EQ: Harman Kardon EzSet/EQ
Dimensions (WxHxD, Inches): 17.3 x 6.6 x 17.12
Weight (Pounds): 17.6
Video Inputs: HDMI 1.4a (8, 1 front), component video (1), composite video (2)
Audio Inputs: Coaxial digital (1), optical digital (2), stereo analog (2)
Additional: USB (1), Ethernet (1), Wi-Fi antenna, IR remote (2/1), 12-volt trigger (1), AM (1), FM (1)
Video Outputs: HDMI 1.4a (2), composite video (1)
Audio Outputs: Stereo analog (2), 7.2-channel pre-out (1), ¼-inch headphone (1)
Additional: RS-232 (1), 12-volt trigger (1)
Price: $1,000

Company Info
(800) 422-8027

(800) 422-8027

utopianemo's picture

I had been set on the Pioneer Elite models in the $1,000 price range, and a big part of that was due to the efficiency that comes from using that class D amplification.....and the fact that it sounded really good with ample power.

Given that this HK AVR has the same or similar tech as the Pioneers, would you recommend one over the other?

Harman Fan's picture

Great review! You mention that you were unsure of the type amp. It is a class AB.

topherdoucet's picture

This receiver utilizes class D fyi..This is how they were able to keep the weight down on a receiver that would normally weigh between 25 to 30+ lbs. The 3600 was 30 lbs, the 3650 slimmed down to 27 lbs and then the 3700 switched to class D and got its weight down to 17 lbs. Impressive in many ways especially that it's able to deliver such top level sound for class D.

paulo72's picture

I believe you are incorrect. HK uses SMPS (switch mode power supplies, just like on a computer, which eliminates the need for Heavy Transformers. The 2700/3700 still use Class AB Amplifiers. HK spent years getting them right, another innovation from HK. Read up on it in the AVS Forum.

jontyrees's picture

I've noticed that you never seem to criticize AVRs for dropping their output significantly from 2ch driven to 5- and 7-ch driven. Some AVRs maintain a healthy 70-90wpc with 7 driven, while this one drops from a strong 150wpc with 2 driven all the way down to the 20's with 7 driven. I know this AVR has a strong amp section, so why the precipitous drop? And does it just not matter? Seems HK and Yamaha exhibit the greatest drops, while Pioneer and Onkyo maintain high power even with 7 driven , but I never hear that used as a distinguishing factor. Just curious.

paulo72's picture

Yes, the HK 2700/3700 power output drops when driven with 5/7 channels continuously. In a movie the rear speakers are used for the surround channels, thus it isn't continuous. The nice thing about the HK is that when you turn up the volume I don't hear distortion. Plus the dolby volume helps alot for low volume listening. It is the most advanced low volume listening software, and very easy to set up. For music I turn it off.

e30cabrio's picture

I have had this unit for almost 2 years, It replaced A marvelous AVR7550HD that HK could not fix on 3 round trips. I had to buy an amp to get near the power the 7550 had. HK has abandoned it's core and I will not buy anything from any of the Harmon International brands.