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Klipsch KA-1000-THX Ultra2 Subwoofer Amplifier

$1,950.00 $2,299.00

Klipsch KA-1000-THX Ultra2 Subwoofer Amplifier, MSRP: $2,299.00

The KA-1000-THX subwoofer amplifier is the powerful driving force behind the Klipsch THX Ultra2 system. This model offers rock-solid dependability under the most demanding conditions and allows listeners to experience all the power, detail and emotion of their favorite music and movies.


  • Delivers 1000-watts into a 4 ohm load, or 500-watts into an 8 ohm load
  • Can support two high performance subwoofers
  • Finished in black with a machined aluminum front panel and knobs
  • Crossover bypass switch
  • Selectable signal-sensing auto-on/off circuit
  • NL2 SpeakOn amplifier output jacks

Designed exclusively for use with Klipsch KW-120-THX subwoofers, the KA-1000-THX is a THX Ultra2 certified monoblock power amplifier capable of 500 watts continuous output into 8 ohms (a single KW-120-THX subwoofer, for example) or 1,000 watts continuous into 4 ohms (two parallel-connected KW-120-THXs). It incorporates front-panel controls for level, crossover frequency, phase, and room-gain compensation. The crossover can be bypassed to feed the amplifier directly from the subwoofer output of an A/V preamplifier, processor, or receiver. Line-level input and output connections are via gold-plated left/right RCA jacks. The amplifier has two parallel-wired speaker outputs with NL2 SpeakOn jacks for correct, secure cable connections.

Convenience features include a selectable signal-sensing auto-on/off circuit, a front-panel main power switch and LED status indicators for crossover and level control operation. Matching the look of Aragon home-theater components, the KA-1000-THX has a black-anodized, grained-aluminum front panel with aluminum control knobs. Premium electronic components are used throughout for sonic purity and reliability.


Frequency Response: 20Hz-1kHz +0/-3dB
Enclosure Type: Use only with KW-120-THX subwoofer enclosures (either one or two)
Amplifier: High-Efficiency Class D
Amplifier Power: FTC Rated Power: 500W into 8 ohms, 1000W into 4 ohms, 20Hz-1kHz @ <1.5% THD, Dynamic Power: 2050W into 8 ohms, 3025W into 4 ohms @ 5% THD
Auto Power On: 2 second ON delay, 15 minute OFF delay
Low Pass Crossover: Continuously variable from 40-120Hz, 24dB/octave slope above 120Hz (non-THX mode)
Inputs: 2 Gold-plated RCA phono jacks
Outputs: 2 Gold-plated RCA phono jacks (unfiltered) / 2 Speakon® NL2 jacks
Phase: Continuously variable from 0 to 180 degrees
Dimensions: 4.75″ (12.1cm) H x 17.5″ (44.5cm) W x 12.25″ (31.1cm) D
Finish: Black anodized aluminum
Voltage: 110/120 VAC 60Hz
UPC: 743878026122

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