Klipsch
Klipsch KA-1000-THX 1000 Watt Subwoofer Amplifier
Best high-performance amplifier for dedicated home theater subwoofer setups.
Experience powerful, low-distortion bass with the Klipsch KA-1000-THX Subwoofer Amplifier. This Class D amplifier delivers a robust 500 watts into 8 ohms, scaling up to 1,000 watts into 4 ohms, ideal for driving dual high-performance subwoofers. It offers exceptional flexibility with a defeatable low-pass crossover, level control, and continuously variable phase control. Designed to complement premium components, its handsome black anodized aluminum front panel ensures both sonic purity and a refined aesthetic within your audio setup.
$949.99
Owner Satisfaction
4.7
/ 5
Category Rank
421
/ 1684
#421 in Power Amplifiers
Price vs Category Average
-88%
Below average
Amplifier Class
Class-D
/ Class-D
Who it's for
- Home theater enthusiasts demanding reference-level cinematic impact
- Owners of Klipsch THX Ultra2 subwoofers seeking perfect system synergy
- Audiophiles needing precise room-tuning capabilities for optimal bass response
Who should skip it
- Budget-conscious buyers preferring the simplicity of active subwoofers
- Users wanting a versatile amplifier for various subwoofer brands
- Minimalists looking to avoid complex rack-mounted equipment setups
Performance breakdown
Power Output
Massive 1000-watt ceiling provides effortless headroom for demanding home theater setups.
Build Quality
Anodized aluminum front panel offers a premium, professional-grade aesthetic and feel.
System Integration
Boundary-gain compensation and variable phase control allow for precise room tuning.
Connectivity
SpeakOn outputs ensure a secure, high-fidelity connection for high-performance subwoofers.
Efficiency
Class-D architecture delivers high-impact bass without excessive heat or energy waste.
Ease of Setup
Intuitive controls simplify the calibration process for dedicated audio enthusiasts.
Key Specs
Amplifier Class
Class-D
Power Output
500 W continuous into 8 Ohms; 1000 W continuous into 4 Ohms
Dimensions (W x H x D)
17.5 x 4.8 x 12.3 inches
Frequency Response
20 Hz to 1 kHz +0/-3 dB
Total Harmonic Distortion
1.5% THD
Connectivity
NL2 SpeakOn amplifier output jacks, 1 x Stereo RCA Input/Output
AC Input Power
110 to 120 VAC, 60 Hz
Weight
27 lb
Features
- Delivers 500W continuous power into 8 ohms.
- Outputs 1000W continuous power into 4 ohms.
- Includes defeatable low-pass crossover.
- Features continuously variable phase control.
- Selectable signal-sensing auto-on/off.
- Premium electronic components for reliability.
- Matches premium home theater components.
- Boundary-gain compensation switch included.
What customers say
Users overwhelmingly praise the Klipsch KA-1000-THX amplifier for its exceptional power and low-frequency performance. The 1000 watts deliver impactful, controlled, and distortion-free bass, even at high levels, creating an immersive, cinematic experience confirmed by its THX certification. Reviewers frequently note the robust build quality, suggesting excellent long-term reliability. This amplifier effortlessly drives demanding passive subwoofers, significantly upgrading existing setups. While a substantial purchase, customers feel it offers outstanding value by elevating the entire audio system to a professional standard. It is highly regarded as a cornerstone component for serious home cinema enthusiasts demanding deep, accurate, and powerful bass.
Know before you buy
Yes, the KA-1000-THX is designed to drive dual high-performance subwoofers. It provides 500 watts into 8 ohms or 1,000 watts into 4 ohms to ensure consistent, powerful output across both units.
This feature helps mitigate the 'boominess' that often occurs when a subwoofer is placed near a wall or in a corner. It allows you to adjust the bass response to maintain clarity and accuracy in rooms where placement options are limited.
Yes, it features a selectable signal-sensing auto-on/off function. This allows the amplifier to wake up automatically when it detects an audio signal and power down when the system is not in use, saving energy.
Absolutely. The amplifier includes a defeatable low-pass crossover, which allows you to bypass its internal filtering and let your AV receiver or processor handle all bass management duties.
The unit utilizes NL2 SpeakOn output jacks. These professional-grade connectors provide a secure, locking connection that ensures reliable power delivery to your subwoofers.
Yes, with a width of 17.5 inches and a height of 4.8 inches, it is designed to fit standard home theater equipment racks. Its black anodized aluminum finish is intended to match the aesthetic of other premium audio components.
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