Harman Kardon HK 990 Stereo Amplifier

Harman Kardon ALL NEW HK 990 Stereo Amplifier

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Highlights

High Current Capability

Ultrawide bandwidth

RLS IV

Digital inputs and outputs

EzSet/EQ room optimization

Balanced XLR inputs

Phono input MM/MC

Dual subwoofer outputs

A/B speaker selection

Heavy-duty binding posts

Dual-path technology

In terms of raw power, the HK 990 is the most muscular amplifier ever to carry the Harman Kardon name, more than capable of driving the most demanding loudspeaker loads without breaking a sweat. But the HK 990’s awesome power is nothing if not highly

refined, extending beyond watts and amps. With a choice of discrete optical or digital inputs or an analog-only signal path, as well as fourth-generation Real-Time Linear

Smoothing (RLS IV), 2.2-channel EzSet/EQ room optimization, dual subwoofer outputs and an audiophile-quality phono preamp section, the HK 990 offers a combination of features you will fi nd irresistible. Others, of course, may simply hunger for all that power. We understand completely.

Key Specifications

Audio Section – Continuous Average Power (FTC), (stereo mode): 150 watts per channel

into 8 ohms @ 20Hz – 20kHz, <0.07% THD, both channels driven; High Instantaneous

Current capability (HCC): ± 200 amps

Dimensions (H x W x D) and weight: 165mm x 440mm x 435mm

(6-1/2" x 17-5/16" x 17-1/8"), 19.6kg

Depth measurement includes knobs, buttons and terminal connections, unless stated otherwise;

height measurement includes feet and chassis, unless stated otherwise.

Features

Power

150W x 2 into 8 ohms, 20Hz – 20kHz, at <0.07% THD, with all channels driven simultaneously

High-current (± 200 amps), ultrawide-bandwidth (10Hz – 100kHz) amplifier design.

Connectivity

Six analog stereo audio inputs

Two analog recording outputs

Four digital inputs (two optical and two coaxial)

Dual subwoofer outputs to connect up to two active subwoofers

One coaxial digital output for recording

Two real balanced inputs, using XLR connectors

One HRS (high-resolution synchronization) link

2.2-Channel processor input allows the use of external audio processors

Two high-quality phono inputs for connection of record players with an MM or MC cartridge

2.2 Preamp outputs allow the use of external power amplifi ers

Remote control input and output

Heavy-duty binding posts allow for the use of speaker cables up to 10mm

2 Headphone output

2 x 150W 2.2-Channel stereo integrated amplifier

Ease of Use

High Current Capability provides the instantaneous current necessary to precisely drive and control nearly any loudspeaker system

Ultrawide-bandwidth amplifi er design for improved transient accuracy and phase linearity

Low negative feedback for further improved dynamic accuracy

Use of discrete electronic circuitry to provide the highest performance level

Dual-path technology allows for pure analog or pure digital audio processing within the same product

EzSet/EQ room optimization for quick and accurate system setup, optimized for two channels and two subwoofers

Symmetric (balanced) XLR analog inputs offer lower noise levels and higher Signal-to-Noise performance

RLS IV digital-to-analog conversion technology, with dual conversion using two stereo AD1955 high-grade DACs

The HRS link allows Harman Kardon CD players to lock themselves to the external clock of the amplifi er for a jitter-free connection,

similar to having the CD playback inside the amplifi er

Dual differential input stages with their own high-voltage supply, resulting in high gain and low noise

Cascoded predriver stage considerably reduces high-frequency distortion, allowing crystal-clear high frequencies, free from any

harsh sound

Thermal Tracking Mechanism using ThermalTrak

TM

output stage transistors that include internal temperature sensors to bias the

current of the output stage in real time

Sophisticated electronic protection circuitry guards the amplifi er from short-circuiting or from damaged speakers and wires,

without impairing sound quality, by using current-limiting or output relays

DC servo to ensure that the DC level of the amplifi er output will stay within a contained limit at any condition

Multiple protection circuits will switch the amplifi er off in case overcurrent, overvoltage, overtemperature or DC protection

is detected

Dual toroidal transformers and up to 16.000μF of supply fi ltering per channel will allow high channel separation and tight

bass control, even with a low-impedance load

Dual-line dot-matrix display

Record out available in both digital and analog domains (two analog outputs and one coaxial digital output)

Remote A/B speaker switching

IR remote extension jacks for control of the amplifi er when placed in a cabinet

Harman Kardon system remote for control of compatible Harman Kardon CD players and tuners.