{"product_id":"parasound-halo-a21-used","title":"Parasound HALO A21+ (USED)","description":"\u003cp\u003eThe Parasound Halo A21+ is a two channel John Curl designed power amplifier running high bias Class A\/AB. It sits at the top of Parasound's dedicated stereo amplifiers and is built to drive demanding loudspeakers with a large toroidal power supply behind it.\u003c\/p\u003e\u003cp\u003eSee pictures for condition. Comes with all original accessories. If you have any questions about the condition or what accessories are included, please give us a call.\u003c\/p\u003e\u003cdetails style=\"margin:0 0 10px\"\u003e\u003csummary style=\"cursor:pointer;font-weight:700\"\u003eSpecs\u003c\/summary\u003e\u003cdiv style=\"padding:8px 2px\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003eTwo channel stereo power amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eCircuit design\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003eJohn Curl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eContinuous power output (8 ohms)\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e300 watts x 2 at 0.1% THD, both channels driven\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eContinuous power output (4 ohms)\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e500 watts x 2 at 0.1% THD, both channels driven\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eBridged power output\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e1000 watts x 1 into 8 ohms at 0.1% THD. Bridged 4 ohm operation is not recommended.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eCurrent capacity\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e60 amps peak, per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eTotal harmonic distortion\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e\u0026lt; 0.1% at full power; \u0026lt; 0.03% at typical listening levels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eIM distortion\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e\u0026lt; 0.04%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eTIM\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003eUnmeasurable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eFrequency response\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e5 Hz to 100 kHz, +0\/-3 dB; 20 Hz to 20 kHz, +0\/-0.25 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eInput impedance\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e33k ohms unbalanced; 66k ohms balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e1 V, unbalanced and balanced per leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eSignal to noise ratio\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e\u0026gt; 115 dB, input shorted, IHF A-weighted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eDamping factor\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e\u0026gt; 1100 at 20 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eInterchannel crosstalk\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e\u0026gt; 80 dB at 1 kHz; \u0026gt; 70 dB at 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003ePower supply\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e1.3 kVA shielded toroidal transformer with 108,000 uF of filter capacitance for the output stages\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003eBalanced XLR and unbalanced RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eDimensions (W x H x D)\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e17.625 x 7.125 x 20 in (448 x 181 x 508 mm), height without feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003e71 lb (32.2 kg) net; 88 lb shipping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee;font-weight:600;width:44%\"\u003eProduction status\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;border-bottom:1px solid #eee\"\u003eDiscontinued by Parasound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/details\u003e","brand":"Parasound","offers":[{"title":"Default Title","offer_id":67595583651893,"sku":null,"price":4000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/1704\/1461\/files\/DSC_2568.jpg?v=1790803124","url":"https:\/\/alleliteaudio.com\/products\/parasound-halo-a21-used","provider":"All Elite Audio","version":"1.0","type":"link"}