Harman Kardon - AVR 445 Solid state multi-channel receiver

A beautiful object for audiophiles. It is from 2007 and works perfectly. It delivers exceptional sound for a great home cinema or musical experience. It is a high-current capability amplifier, meaning it can drive demanding speakers and maintain a strong sound presence at any volume. The two remote controls as well as the manual are included with the amp. Several solutions allow you to enjoy surround sound. Either route the sound through an optical input, enable LOGIC 7 (the equivalent of Pro Logic IIx but better), or use the analog RCA inputs. HDMI inputs do not deliver compressed surround formats (Dolby Digital, DTS) but only 2.0 PCM.

LOGIC 7
Active-matrix decoding system developed by Lexicon and used in many Harman products, capable of converting two-channel signals into five- or seven-channel signals. This system offers optimized modes for video and musical tracks and a conventional stereo musical recording function. It was specifically designed for recording studios characterized by a powerful front-end, while distributing the sounds perceived beyond the walls of the room. An automotive version of this system exists to handle the unique listening conditions inside cars. See Encoder/decoder Matrix

High Current Capacity (HCC)
The wattage per channel is an incomplete measure of an amplifier's power. In terms of dynamics and impact, current is what matters. The HCC capability is a broad design approach encompassing everything from transformer design and capacitor size to discreet output circuitry and minimal use of feedback. This electronic system, comparable to a high-displacement, high-torque racing engine, yields audible results. You benefit from a beautiful transient response, tighter bass performance, and stronger presence, at any volume.

AUDIO
Continuous average full-power stereo mode (FTC) per channel:
80 W (20 Hz - 20 kHz, < 0.07% THD, 2 channels driven at 8 ohms)
Surround modes 6 channels, Power per channel:
Front left and right channels: 65 W (< 0.07% THD, 20 Hz - 20 kHz into 8 ohms)
Center Channel: 65 W (< 0.07% THD, 20 Hz - 20 kHz into 8 ohms)
Surround channels (side D & G, rear): 65 W (< 0.07% THD, 20 Hz - 20 kHz into 8 ohms)
Input sensitivity/linear impedance (high level): 200 mV / 47 kOhm
Signal-to-noise ratio (IHF-A): 100 dB
Adjacent-channel separation for the surround system:
Dolby Pro Logic I and II: 40 dB
Dolby Digital: 55 dB
DTS (Digital Theater System): 55 dB
Frequency response at 1 W (0 dB, -3 dB): 10 Hz - 130 kHz
High-frequency instantaneous current capability: ±40 A
Slew rate: 40 V/µs

Connections
8 audio inputs 2 digital audio outputs
[6 rear-panel inputs (3 optical, 3 coaxial), 2 front-panel inputs (optical, coaxial switchable to output), 2 rear-panel outputs (optical, coaxial)]
5 composite/S-Video (V1,V2,V3,V4,DVD) audio/video inputs 2 analog audio inputs (CD,TAPE)
Independent 7.1 channel audio inputs (8 Channel Direct Inputs)
7.1 channel Pre-out audio outputs
Front-panel audio/video inputs, doubled as Composite/S-Video and switchable to output (V4)
RS232 port
1 dock connector for iPod station "The Bridge"

Settings
- EzSet EQ II Parametric Equalization: the EzSet EQ II system accounts for room size and design to automatically adjust levels, delays, speaker size and crossover frequencies for the speakers and two subwoofers.
- Quadruple Crossover Bass Manager
Allows configuring different bass crossover frequencies depending on the speakers used: group 1: front left and right speakers, group 2: center speaker, group 3: surround speakers (SR, SL), group 4: surround back (SBR, SBL).
- Digital Bass Management
Allows analog/digital conversion of signals arriving at the "8CH direct input" and offers precise AVR tuning adjustments based on the type of speakers used (Small / Large).
- Subwoofer crossover frequency: 40, 60, 80, 100, 120 and 200 Hz.
- Multi-room audio function and integrated multi-zone amplification: allows adding an extra amplifier for audio in another room. In a 5.1 setup, the two surround back channels (SBR and SBL) can be directed to the multi-room zone and amplified directly by the AVR.
- A-Bus Ready / RS232: the A-Bus function enables remote control of the amp from a directly amplified keyboard and patented A-Bus. The RS232 port allows control of the amp via high-end home automation systems, as well as performing a software update.

Power supply: AC 220-240 V / 50 Hz
Power consumption: 120 W in standby, 1025 W maximum (7 channels driven)