Factory sealed box (Never Opened), Manufacturer Refurbished, from Harman Kardon. Model # AVR3700-Z.

What is in the box:

1 AVR 3700 audio/video receiver
1 main-system remote control with batteries
1 Zone II remote control with batteries
1 AM loop antenna
1 FM antenna
1 EzSet/EQ microphone
Quick-start guide

Audio Specifications and Features: 
Stereo Power
Power: 125 watts/ch, 20Hz – 20kHz
Multichannel Power(all channels driven): 125 watts/ch
Signal-to-noise Ratio (IHF-A): 100 dB
Input Sensitivity/Impedance: 200mV/47k
Video Features
Television Format:PAL/NTSC
Input Level/Impedance: 1Vp-p/75
Output Level/Impedance: 1Vp-p/75
Video Frequency Response (Component Video): 10Hz – 8MHz (–3dB)
HDMI Input / Output: 3D, Audio Return Channel, CEC and Deep Colour
HDMI Version: 1.4 a with 3D support
FM Tuner Features
Frequency Range MHz: 87.5 MHz
Usable Sensitivity (IHF): 1.3µV/13.2dBf
Signal-to-Noise Ratio (Mono/Stereo): 70dB/68dB
Distortion (Mono/Stereo): 0.2%/0.3%
Stereo Separation @ 1kHz: 40 dB
Selectivity ±400kHz: 70 dB
Image Rejection: 80
IF Rejection: 90
AM Tuner Specifications
Frequency Range kHz: 520 kHz
Usable Sensitivity (Loop): 500 µV
Distortion: 50%, mod 0.8%
Selectivity: 30

General Specifications
Power Requirement: AC 230V, 50 Hz
Power Consumption (full power/idle): 120W idle; 1,405W maximum
Dimensions (H x W x D – Metric/English): 440mm x 165mm x 382mm (17-5/16" x 6-1/2" x 15")
Weight (Metric/English): 8kg (17.6 lb)