Klipsch KDA-500 DSP Amplifier (Each)

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Klipsch KDA-500 DSP Amplifier at Vinyl Sound Toronto Canada The KDA-500 is a 4-channel Class G/H DSP amplifier from Klipsch (Indianapolis, USA), available at Vinyl Sound in Toronto , Canada. Part of the Klipsch KDA Series, this 1-rack-unit amplifier delivers 500 watts total system power across four channels at 125 watts per channel, with simultaneous compatibility for 70V, 100V, and low-impedance speaker systems on a per-channel basis. Built for custom installation across residential and commercial environments, the KDA-500 pairs high-efficiency Class G/H amplification with a fully web-based DSP platform accessible via RJ-45 Ethernet or wirelessly through a network router, offering password-protected channel routing, parametric EQ, gain control, limiting, and one-click speaker presets optimized for virtually every Klipsch speaker in production. High-Efficiency Class G/H Amplifier Platform The KDA-500 is built around a Class G/H amplifier topology, a high-efficiency design that dynamically steps the power supply voltage in real time to match the demands of the audio signal. Unlike conventional Class AB designs that maintain a fixed supply voltage and dissipate excess energy as heat, Class G/H tracks the signal envelope and switches between supply rails only when higher voltage is needed for transient peaks. The result is substantially lower heat generation under typical program material, enabling the KDA-500 to operate reliably in enclosed rack environments while delivering clean, low-distortion output at less than 1% THD at rated power across all four channels simultaneously. With a signal-to-noise ratio of -100dB below rated output, background noise remains inaudible even in low-level distributed audio applications where ambient room noise is minimal. 70V / 100V and Low-Impedance Compatibility Per Channel One of the KDA-500's defining installation advantages is fully independent impedance mode selection on a channel-by-channel basis. Each of the four channels can be individually configured for 70V distributed line operation, 100V distributed line operation, or low-impedance output for direct 4-ohm or 8-ohm speaker connections. This per-channel flexibility means a single KDA-500 can simultaneously drive a 70V ceiling speaker circuit in one zone, a 100V pendant speaker array in a second zone, and a pair of low-impedance passive speakers in a third zone, all from the same 1RU chassis. For large-scale commercial installations involving long cable runs to multiple distributed speaker positions, 70V and 100V line operation dramatically reduces resistive cable losses compared to low-impedance distribution, without requiring additional step-up transformers or distribution amplifiers. State-of-the-Art Web-Based DSP Control The KDA-500's integrated DSP engine is accessed entirely through a web browser by connecting a laptop or network device to the rear-panel RJ-45 Ethernet port and entering the amplifier's assigned IP address. No proprietary software download is required. The web-based DSP interface provides fully matrixed control over channel assignments, parametric EQ, gain structure, output limiting, and routing. Password protection prevents unauthorized changes to system settings after commissioning, making the KDA-500 appropriate for commercial installations where end-user tampering is a concern. DSP presets for virtually every Klipsch speaker in the product line are built into the platform, allowing installers to select the correct speaker model from a dropdown and immediately apply optimized EQ and power handling parameters with a single click. For wireless DSP access, the KDA-500 can be connected to a network router, enabling tablet, smartphone, or laptop control without a direct wired connection to the amplifier. Key Features Class G/H High-Efficiency Amplification: Dynamically tracks the audio signal envelope to step power supply voltage in real time, minimizing heat dissipation and enabling reliable sustained operation in enclosed rack installations. 500W Total System Power (4 x 125W Per Channel): Delivers 125 watts per channel across all four channels simultaneously, with less than 1% THD at rated output and -100dB signal-to-noise ratio. Per-Channel 70V / 100V / Low-Impedance Selection: Each channel independently configurable for 70V distributed line, 100V distributed line, or low-impedance (4-8 ohm) output, enabling mixed-mode installations from a single 1RU chassis. Fully Matrixed 4x4 I/O: Four balanced Phoenix connector inputs (up to 12 AWG wire) and four Phoenix speaker outputs (up to 12 AWG wire) with fully matrixed routing, plus four unbalanced RCA line inputs and four unbalanced RCA line-through outputs. Web-Based DSP Platform via RJ-45 Ethernet: Browser-accessible DSP interface requires no proprietary software; connects via rear-panel Ethernet port or wirelessly through a network router for tablet and smartphone access. Klipsch Speaker Presets: Built-in one-click DSP presets optimized for virtually every Klipsch speaker model, applying EQ and power handling parameters calibrated to each specific product. Password-Protected DSP Settings: Channel assignments, gain, EQ, and limiting parameters can be locked with a password after commissioning to prevent unauthorized changes in commercial installations. Daisy-Chain Expandability: Multiple KDA-500 units can be daisy-chained together via the RCA line-through outputs, scaling system output for larger installations without additional mixing or distribution equipment. 1RU Rack Form Factor: Slim 1.73-inch high chassis fits standard 19-inch equipment racks; removable rack ears and removable rubber feet allow both rack-mounted and shelf-mounted installation. Balanced Phoenix Connector Inputs: Fully balanced 4 x Phoenix line-level inputs accept up to 12 AWG wire for long balanced cable runs with maximum noise rejection in commercial installations. Unbalanced RCA I/O: Four unbalanced RCA line inputs and four unbalanced RCA line-through outputs provide compatibility with consumer source components and allow signal pass-through to additional amplifiers. 750mV / 0dBU Input Sensitivity: Balanced input sensitivity of 750mV at 0dBU matches standard line-level output from professional AV processors and residential AV receivers. Dual Voltage Operation: Available in 120V (Part No. 1063257) and 230V (Part No. 1063260) versions for North American and international installations. Technical Specifications Amplifier Type High-Efficiency Class G/H Total System Power 500W (4 x 125W per channel) Impedance Compatibility 70V / 100V / Low-Impedance (per channel, independently selectable) THD Show more