{"product_id":"match-m-21amp-2-channel-class-hd-micro-amplifier-350w-2-ohm-stable","title":"Match M 2.1AMP 2-Channel Class HD Micro Amplifier 350W 2 Ohm Stable","description":"\u003ch2 dir=\"auto\" class=\"text-text-100 mt-3 -mb-1 text-[1.375rem] font-bold\"\u003e\u003cstrong\u003eMatch M 2.1AMP 2-Channel Class HD Micro Amplifier 350W 2Ω Stable\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eA 2-channel Class HD micro amplifier from Match, the M 2.1AMP delivers 1 x 350W RMS at 2Ω in mono mode or 2 x 170W RMS at 4Ω in stereo mode (up to 430W RMS maximum at 2Ω), with 2 RCA inputs (1-6V), mono\/stereo mode switch, ground input switch, frequency response to 40kHz, 108dB SNR, Class HD technology for maximum efficiency, Start-Stop capability, and an ultra-compact 35 x 85 x 110mm housing suited to stealth installation concepts.\u003c\/p\u003e\n\u003ch3 dir=\"auto\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe Match M 2.1AMP is the compact power amplifier companion to the Match M 5.4DSP, sharing the same 35 x 85 x 110mm micro dimensions for stealth installation concepts in modern vehicles where space is severely limited. The M 2.1AMP is a multifunctional tool that switches between mono and stereo operating modes, making it ideal for subwoofer amplification, front or rear speaker amplification, and DVC subwoofer applications from a single unit.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eIn mono mode the M 2.1AMP operates as a 2Ω stable mono amplifier delivering 1 x 210W RMS at 4Ω and 1 x 350W RMS at 2Ω (up to 430W RMS maximum), suited for single voice coil subwoofers at 2Ω or dual voice coil subwoofers with both coils wired in parallel. In stereo mode it delivers 2 x 170W RMS at 4Ω for driving powerful front or rear speaker channel pairs including passive component systems and power-hungry midbass drivers.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe Class HD topology combines the dynamic supply rail modulation of Class H technology with the switching efficiency of Class D, continuously varying the internal supply voltage to minimise idle losses and maintain efficiency close to maximum at all times. The resulting heat dissipation is minimal, enabling the compact micro form factor without thermal management limitations. The High-Res audio bandwidth of 10Hz to 40kHz ensures that all audio content, including high-resolution sources, is reproduced without bandwidth limiting at the amplifier stage.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe 2 RCA inputs accept 1-6V from DSP processors, aftermarket head units, and the RCA outputs of Match UPGRADE DSP amplifiers such as the M 5.4DSP. The ground input switch prevents ground loop noise in multi-amplifier installations. The Line Input-to-RCA adaptor is included for flexible connection. Start-Stop capable power supply maintains stable operation during voltage drops to 6V. Operating voltage is 10.5-17V. Fused at 1 x 30A LP-Mini (APS).\u003c\/p\u003e\n\u003ch3 dir=\"auto\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003e\u003cstrong\u003eFeatures \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eMono Mode - 1 x 350W RMS at 2Ω for Subwoofer Applications:\u003c\/strong\u003e In mono mode the M 2.1AMP delivers 1 x 210W RMS at 4Ω and 1 x 350W RMS at 2Ω (up to 430W RMS maximum), providing substantial power for driving single voice coil subwoofers at 2Ω and DVC subwoofers with coils wired in parallel.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eStereo Mode - 2 x 170W RMS at 4Ω for Speaker Applications:\u003c\/strong\u003e In stereo mode the M 2.1AMP delivers 2 x 170W RMS at 4Ω for driving powerful front or rear speaker channel pairs, passive component speaker systems, and high-efficiency midbass drivers.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eClass HD Technology - Maximum Efficiency with Minimal Heat Dissipation:\u003c\/strong\u003e Class HD varies the internal supply voltage in real time depending on the amplifier's input signal amplitude, reducing idle losses and maintaining overall efficiency close to maximum at all times. The resulting low heat dissipation enables the compact micro form factor without requiring large heatsinks or active cooling.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eUltra-Compact 35 x 85 x 110mm - Micro Form Factor for Stealth Installations:\u003c\/strong\u003e The M 2.1AMP shares the same 35 x 85 x 110mm dimensions as the Match M 5.4DSP, enabling installation in locations impossible for conventional amplifiers including under seat rails, inside door panels, behind dashboards, and in OEM cavity spaces typical of modern vehicles.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eHigh-Res Audio Bandwidth - 10Hz to 40kHz:\u003c\/strong\u003e The extended frequency response of 10Hz to 40kHz with 108dB SNR and THD below 0.02% provides High-Resolution audio bandwidth, ensuring lossless signal reproduction across the full range of high-resolution audio content without bandwidth limiting at the amplifier stage.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGround Input Switch - Ground Loop Prevention:\u003c\/strong\u003e The ground input switch provides a solution for ground loop noise in multi-amplifier installations, preventing hum and interference in complex system configurations where multiple amplifiers share the signal source.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003ePerfectly Combinable with Match UPGRADE DSP Amplifiers:\u003c\/strong\u003e The M 2.1AMP is specifically designed to pair with Match UPGRADE DSP amplifiers including the M 5.4DSP, connecting to the RCA line outputs of the DSP amplifier for additional channel power in multi-amplifier system architectures.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003e2 RCA Inputs (1-6V):\u003c\/strong\u003e Accepts line-level RCA signals from DSP processor outputs, aftermarket head units, and Match DSP amplifier RCA outputs for maximum system flexibility.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eStart-Stop Capable - 10.5-17V Operating Range:\u003c\/strong\u003e Start-Stop capable power supply maintains stable internal supply voltage during voltage drops to 6V for up to 5 seconds during engine cranking.\u003c\/p\u003e\n\u003ch3 dir=\"auto\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMatch Micro Amplifier M 2.1AMP\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1 x Line Input-to-RCA Adaptor\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMounting Material\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eInstruction Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003e\u003cstrong\u003eTechnical Specs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv dir=\"auto\" class=\"overflow-x-auto w-full px-2 mb-6\"\u003e\n\u003ctable class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"\u003e\n\u003cthead class=\"text-left\"\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\" class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\" class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eSKU\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eM 2.1AMP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eBrand\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eMatch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eRange\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eM Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eChannels\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eAmplifier Class\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eClass HD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eBuilt-in DSP\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003ePower RMS - Mono at 4Ω\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e1 x 210W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003ePower RMS - Mono at 2Ω\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e1 x 350W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003ePower RMS - Stereo at 4Ω\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e2 x 170W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eMax Output at 2Ω (Mono)\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eUp to 430W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eTHD\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eLess than 0.02%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eSNR - Analog Input\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e108dB (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eDamping Factor\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e10Hz-40,000Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eRCA Inputs\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e2 x RCA (1-6V, 10kΩ)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eHigh-Level Inputs\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eOutputs\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e2 x Speaker, 1 x Remote Out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eRCA Preout\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eMono\/Stereo Mode Switch\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eGround Input Switch\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e10.5-17V (Stable to 6V for 5 Seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003ePower Rating\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eDC 12V, 40A Max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eIdle Current\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e500mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eFuse\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e1 x 30A LP-Mini (APS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eStart-Stop Capable\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eDimensions\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e35mm x 85mm x 110mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 dir=\"auto\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003e\u003cstrong\u003eCompatible With\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe M 2.1AMP is compatible with 10.5-17V vehicle electrical systems. RCA inputs accept 1-6V from DSP processor outputs, aftermarket head units, and Match UPGRADE DSP amplifier RCA outputs. The M 2.1AMP has no high-level inputs and no RCA preout. Designed for use with Match M 5.4DSP and other Match UPGRADE DSP amplifiers as an expansion amplifier for additional output channels. Confirm subwoofer impedance matches the 2Ω (mono) or 4Ω (stereo) rated output configurations before purchase.\u003c\/p\u003e\n\u003ch3 dir=\"auto\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eWhat is the difference between mono and stereo mode on the M 2.1AMP?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eIn mono mode the M 2.1AMP operates as a 2Ω stable mono amplifier delivering 1 x 350W RMS at 2Ω (up to 430W RMS maximum), with both RCA inputs summed to a single mono channel. This is ideal for driving single voice coil subwoofers at 2Ω or DVC subwoofers with both coils wired in parallel. In stereo mode it delivers 2 x 170W RMS at 4Ω for front or rear speaker channel pair applications.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eIs the M 2.1AMP compatible with the Match M 5.4DSP?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eYes. The M 2.1AMP is specifically designed to pair with the Match M 5.4DSP, connecting to the DSP amplifier's RCA line outputs to provide additional output power for subwoofer or high-power speaker applications in multi-amplifier system configurations. Both units share the same compact micro dimensions for uniform stealth installation concepts.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eDoes the M 2.1AMP have any onboard crossover filters?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eNo. The M 2.1AMP has no highpass, lowpass, or subsonic filter controls. All crossover and signal processing must be handled by the upstream DSP amplifier or processor.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eWhat is Class HD technology?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eClass HD combines the dynamic supply rail modulation of Class H technology with the switching efficiency of Class D output stage design. By continuously varying the internal supply voltage in response to the input signal amplitude, idle losses are dramatically reduced and overall efficiency is maintained close to maximum at all times, resulting in minimal heat dissipation from the compact micro housing.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eIs the M 2.1AMP suitable for driving passive component speakers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eYes. In stereo mode the M 2.1AMP delivers 2 x 170W RMS at 4Ω with a 10Hz-40kHz frequency response and 108dB SNR, making it well suited for driving passive component front or rear speaker systems where high power output and High-Res audio bandwidth are required.\u003c\/p\u003e","brand":"Match","offers":[{"title":"Default Title","offer_id":44769534115933,"sku":"MATCHM21AMP","price":850.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/9528\/9437\/files\/M2.1AMP-3.webp?v=1784676260","url":"https:\/\/frankiesautoelectrics.com.au\/products\/match-m-21amp-2-channel-class-hd-micro-amplifier-350w-2-ohm-stable","provider":"Frankies Auto Electrics","version":"1.0","type":"link"}