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Klipsch RSA-500 Subwoofer Amplifier / Great Condition / Works Perfectly. Packing will be top notch.The Klipsch RSA-500 is a BASH Digital Hybrid mono subwoofer amplifier designed to power passive in-wall or outdoor subwoofers (such as the RW-5802 and AW-800-SW). It delivers 300 watts FTC continuous into 8 ohms and 500 watts into 4 ohms, and it supports daisy-chaining up to two subwoofer modules. [1, 2, 3]Core SpecificationsAmplifier Type: BASH (Bridged Amplifier Switching Hybrid) [1]Power Output:300W FTC continuous into 8 ohms @ < 1.5% THD (20Hz - 1kHz)500W FTC continuous into 4 ohms @ < 1.5% THD (20Hz - 1kHz)Dynamic Power: 875W into 8 ohms [1, 2, 3]Frequency Response: 20Hz – 1kHz (± 3dB) [1]Low-Pass Crossover: Continuously variable from 40Hz to 120Hz [1]Connectivity & ControlsInputs: 1x LFE (unfiltered) RCA, 1x Line-level (L/R) RCA, and Speaker-level binding postsOutputs: 1x LFE (unfiltered) RCA, 1x Line-level (L/R) RCA, and 2 sets of parallel speaker binding postsControls: EQ switch (for specific Klipsch subwoofers), phase switch (0/180°), and auto on/off mode [1, 2, 3]Dimensions & HardwareDimensions: 17" W × 3.5" H × 12.6" DWeight: 18 lbs
The Klipsch RSA-500 is a respected 500W BASH mono sub amplifier that delivers solid, clean low-end punch for passive subwoofers. At US$550, this listing sits comfortably below the 75th percentile (US$630) but above the median (US$348) of recent comparable USD listings, making it a fair, not bargain, price for a unit in great condition that works perfectly. It’s not a strong deal, but it’s not overpriced either—just a solid mid-market offer for a functional piece of gear that still performs well in modern setups.
This amplifier is well-regarded for its efficient BASH design, which balances power and heat management, and its ability to drive demanding passive subs without distortion. The fact that it’s listed as “great condition” and “works perfectly” by an unknown seller adds meaningful upside, especially if it’s original-owner gear with no hidden repair history. If you’re building or upgrading a home theater or music system and need reliable sub control, this is a worthwhile buy at a fair price—no red flags, just a clean opportunity.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Founded in 1946 in Hope, Arkansas, Klipsch traces its roots to Paul W. Klipsch, a visionary audio engineer and maverick who handcrafted his first speakers in a tin shed behind a dry cleaner. Patented in 1945, the revolutionary Klipschorn corner horn loudspeaker embodied his quest for live-like sound reproduction, drawing from Bell Labs principles to deliver wide frequency range and expansive soundstaging. This American pioneer shook hi-fi foundations, blending acoustic innovation with unyielding craftsmanship, and registered Klipsch & Associates to bring that tin-shed magic to the world.
Klipsch excels in loudspeakers, from flagship horn-loaded models like the enduring Klipschorn to high-fidelity enclosures, drivers, and complete systems for home audio, public address, and even personal computers. While deeply rooted in speakers, the brand has expanded into headphones and music systems, maintaining a focus on efficient, dynamic designs that prioritize clarity and power without excess amplification needs.
Renowned for its heritage-driven efficiency and bold, live-performance sonics, Klipsch holds a commanding mid-to-high-end position in the market, appealing to discerning buyers who value American-made authenticity over mass-market compromise. Neither purely vintage collector bait nor niche boutique, it bridges classic horn technology with modern reliability, earning cult status among audiophiles chasing that bigger, clearer sound Paul Klipsch first chased in 1946.
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