KEF KASA500 In-Wall Amplifier – High-Power Home Audio Solution

Description The KEF KASA-500 (EU) 500W Ci is a high-performance in-wall/rack-mountable subwoofer amplifier engineered to deliver powerful, precise bass for custom installation audio systems. Designed specifically to partner with KEF Ci subwoofers, it provides exceptional control and dynamic output, making it ideal for home theater, media rooms, and whole-home audio setups. With 2 x 250W at 4 Ohms or bridged 500W at 8 Ohms, the KASA-500 ensures clean, distortion-free amplification with less than 1% THD for accurate low-frequency reproduction.Flexible connectivity options include selectable stereo RCA line-level inputs, mono LFE RCA input, and stereo speaker-level inputs, allowing seamless integration with AV receivers and custom audio systems. The adjustable 40–140Hz crossover (or software bypass) enables precise tuning to match your subwoofer configuration and room acoustics. A 12V trigger input ensures automatic power synchronization with connected equipment for convenient operation.Built for professional installations, the KASA-500 features a compact chassis that fits 2 EIA rack spaces and includes optional rack ears for secure mounting. Its sleek black finish complements dedicated equipment racks and AV cabinets while maintaining a discreet appearance. Combining robust power output, advanced tuning flexibility, and reliable KEF engineering, the KASA-500 (EU) 500W Ci amplifier delivers deep, controlled, and impactful bass performance for premium custom audio systems.FeaturesHigh-Output Design: 2 × 250 W @ 4 Ω or bridged 1 × 500 W @ 8 Ω with <1% THD for clean, distortion-free power.Optimized for Subwoofers: Designed specifically to drive CEILING & in-wall subwoofers like the KEF Ci200TRB with authority and depth.Multiple Input Options: Selectable stereo RCA line-level, mono LFE RCA, or stereo speaker-level inputs for seamless integration with AV receivers and custom systems.12 V Trigger Input: Integrates with other AV equipment for automatic power control and streamlined operation.Adjustable Crossover: 40–140 Hz crossover with software-bypass option for precise system tuning and tailored bass response.Rack-Ready Form Factor: Compact chassis compatible with 2 EIA rack spaces and optional rack ears for secure mounting.Sleek Aesthetics: Black finish and low-profile design blend into AV cabinets or equipment racks.Engineered with high-quality components for lasting performance in custom home audio or theater installations.Efficient thermal design helps maintain performance during extended use.SpecificationsSpecificationDetailsColourBlackCrossover Frequencies40 – 140 Hz or software bypassInputsSelectable stereo RCA line level, or mono LFE RCA level; Stereo speaker level12 Volt Trigger Input Voltage8 – 14 V DC @ 1.5 mA max, ⅛” diameter female plug (tip positive or tip negative)Recommended Amplifier Power2 × 250 W @ 4 Ohms (<1% THD); Bridge: 1 × 500 W @ 8 OhmsAmplifier Power2 × 250 W @ 4 Ohms; Bridge: 1 × 500 W @ 8 Ohms (<1% THD)Product External Dimensions (H × W × D)88 × 432 × 304 mm (3½ × 17 × 12 in.)With feet: 92 × 432 × 304 mm (3⅝ × 17 × 12 in.)With rack ears (2 EIA rack space): 88 × 483 × 304 mm (3½ × 19 × 12 in.)Weight4 kg (9 lbs)Unit MeasurementPieceT2S7M0E0/00-BKM