{"product_id":"parasound-halo-series-a-21-stereo-power-amplifier-500w-x-2-channels-black","title":"Parasound Halo Series A 21+ Stereo Power Amplifier | 500W x 2 Channels | Black","description":"\u003ch2\u003eParasound Halo Series A 21+ Stereo Power Amplifier | 500W x 2 Channels | Black\u003c\/h2\u003e\u003cp\u003eThe Parasound Halo A 21+ is a high-current two-channel power amplifier suited to serious stereo systems and demanding audiophile installations. Housed in a 5U chassis weighing 88 lbs net, it drives 300 watts per channel into 8 ohms and 500 watts per channel into 4 ohms with both channels operating simultaneously, and scales to 1,000 watts into 8 ohms in bridged mono mode. It accepts both balanced XLR and unbalanced inputs.\u003c\/p\u003e\u003cp\u003eThe A 21+ draws up to 60 amps peak per channel and holds distortion to 0.1 percent THD. Frequency response spans 5 Hz to 100 kHz with no more than 3 dB rolloff, tightening to plus or minus 0.25 dB across the full audio band. Signal-to-noise ratio exceeds 115 dB IHF A-weighted. Channel separation is greater than 80 dB at 1 kHz. Gain is 29 dB, input sensitivity is 1V for both balanced and unbalanced connections, and the balanced input impedance is 66 kilohms.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e300W x 2 into 8 ohms, 500W x 2 into 4 ohms, both channels driven\u003c\/li\u003e\n\u003cli\u003eBridged mono: 1,000W into 8 ohms\u003c\/li\u003e\n\u003cli\u003e60 amps peak current per channel\u003c\/li\u003e\n\u003cli\u003eTHD 0.1% at rated output\u003c\/li\u003e\n\u003cli\u003eSNR greater than 115 dB, IHF A-weighted\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and unbalanced inputs\u003c\/li\u003e\n\u003cli\u003eFrequency response 5 Hz - 100 kHz, +0\/-3 dB\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack Spacing:\u003c\/strong\u003e 5U\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannels:\u003c\/strong\u003e 2-Channel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatts Per Channel:\u003c\/strong\u003e 501-1000W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Output @ 8 ohm:\u003c\/strong\u003e 300W x 2, 8 Ω both channels driven\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Output @ 4 ohm:\u003c\/strong\u003e 500W x 2, 4 Ω both channels driven\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Output Bridged @ 8 ohm:\u003c\/strong\u003e 1000W x 1, 8 Ω Bridged; 4 Ω operation is not recommended\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e Standby: 1W Idle (no music playing): 160W Typical Listening levels: 300W Maximum: 1400W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 60 amps peak, per channel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion (THD):\u003c\/strong\u003e 0.1% THD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower RMS:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 5 Hz - 100 kHz, +0\/-3 dB 20 Hz - 20 kHz, +0\/-0.25 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudio Crosstalk:\u003c\/strong\u003e \u0026gt; 80 dB at 1 kHz \u0026gt; 70 dB at 20 kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpedance Input:\u003c\/strong\u003e Unbalanced: 33 kΩ Balanced: 66 kΩ,(33 kΩ per leg)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudio Gain:\u003c\/strong\u003e 29 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitivity Input:\u003c\/strong\u003e for 28.28 V Output into 8 Ω Unbalanced: 1 V Balanced: 1 V per leg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal to Noise Ratio:\u003c\/strong\u003e \u0026gt; 115 dB, input shorted, IHF A-weighted \u0026gt; 110 dB, input shorted, unweighted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Requirements:\u003c\/strong\u003e Audio Trigger: 2 mV - 10 mV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Trigger Voltage:\u003c\/strong\u003e +9 Vdc to +12 Vdc, 5 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectors:\u003c\/strong\u003e XLR Pin Identification 1 = Ground (Shield) 2 = Positive 3 = Negative (Return)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e 17.63\" x 7.1\" x 20\" (448 x 181 x 508mm) (without feet) 17.63\" x 7.75\" x 20\" (448 x 197 x 508mm) (with feet) Depth with cables: 21.5\" (546 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Net Weight: 88 lbs (39.9 kg) Shipping Weight: 107 lbs (48.5 kg)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Parasound","offers":[{"title":"Default Title","offer_id":46346891854021,"sku":"PARA-A21P-BL","price":5000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3085\/3829\/files\/A21_2B_20high_20angle_20black.jpg?v=1781125825","url":"https:\/\/avlgear.com\/products\/parasound-halo-series-a-21-stereo-power-amplifier-500w-x-2-channels-black","provider":"AVLGEAR","version":"1.0","type":"link"}