{"product_id":"pass-labs-hpa-1c-stereo-headphone-amp","title":"Pass Labs HPA-1C Stereo Headphone Amplifier","description":"\u003ch2\u003eIntroducing the HPA-1C\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1040\/6126\/files\/Pass-Labs-HPA-1C-Stereo-Headphone-Amplifier-hero-Vinyl-revival_117b9aaa-74c2-4c43-9534-df1a6257039c.png?v=1760250593\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e A Classic, Refined from Pass Labs \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eBuilding on the legacy of the award-winning HPA-1, the new HPA-1c raises the bar in headphone amplification. While the core amplifier circuit remains true to its original, highly regarded design, Pass Labs has taken the opportunity to refine and enhance its performance.\u003c\/p\u003e\n\u003cp\u003eDriven by the need to replace end-of-life components, the HPA-1c features an upgraded power supply and improved circuit board grounding. These updates deliver a cleaner, more stable power foundation—resulting in lower noise, tighter regulation, and a blacker background.\u003c\/p\u003e\n\u003cp\u003eAlso added is a local regulation to the servo circuitry, achieving approximately a 10 dB improvement in overall noise performance.\u003c\/p\u003e\n\u003cp\u003eThe result? Greater low-level detail and improved clarity, especially with high-sensitivity headphones where it matters most.\u003c\/p\u003e\n\u003cp\u003eIn addition to its excellence as a headphone amplifier, the HPA-1c continues to function as a high-performance line-level preamplifier. With its discrete, class A design and robust output stage, it's equally at home at the heart of a reference speaker system.\u003c\/p\u003e\n\u003ch4\u003eHeadphone Output\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe HPA-1 delivers up to 2 watts into 32 ohms, with a low output impedance of 2 ohms.\u003cbr\u003eIt's designed to drive most dynamic and planar magnetic headphones with authority, including low-impedance and high-sensitivity models.\u003c\/p\u003e\n\u003ch4\u003ePreamplifier Output\u003c\/h4\u003e\n\u003cp\u003eThe preamp section is capable of driving a typical power amplifier load (10kΩ or higher) with very low output impedance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch4\u003eThe accolades speak for themselves.\u003c\/h4\u003e\n\u003cdiv id=\"product-info\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e“An updated version of the award-winning HPA-1. The “c” version features an upgraded power supply and improved grounding, leading to lower noise and greater clarity, especially with high-sensitivity headphones.”\u003cbr\u003epositive-feedback.com Review – Juan C. Ayllon\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"product-info\"\u003e\n\u003cdiv id=\"description\"\u003e\n\u003cp\u003eDesign\u003cbr\u003eClass A\u003c\/p\u003e\n\u003cp\u003eGain (dB)\u003cbr\u003e8\u003c\/p\u003e\n\u003cp\u003eFrequency Response\u003cbr\u003e100 Hz\u003c\/p\u003e\n\u003cp\u003eOutput Power into 20 ohms\u003cbr\u003e3500 mW\u003c\/p\u003e\n\u003cp\u003eTHD + Noise\u003cbr\u003e\u0026lt; 0.005 at 1V out\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eOutput Power into 300 ohms\u003cbr\u003e200 mW\u003c\/p\u003e\n\u003cp\u003eInput Impedance \u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e50K Ohm\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eOutput Impedance \u003cbr\u003e\u0026lt; 2 ohms\u003c\/p\u003e\n\u003cp\u003ePower Consumption (Watts) \u003cbr\u003e23\u003c\/p\u003e\n\u003cp\u003eFinishes\u003cbr\u003eBlack\u003cbr\u003eSilver\u003c\/p\u003e\n\u003cp\u003eDimensions (W x D x H)\u003cbr\u003e27.94 x 34.29 x 10.16 cm\u003c\/p\u003e\n\u003cp\u003eWeight\u003cbr\u003e6.35  kg\u003c\/p\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003cp data-pm-slice=\"1 1 []\"\u003e*This information has been obtained from the manufacturer's website. We advise that features, specifications, and price may change without notice.\u003c\/p\u003e\n\u003cp\u003eE\u0026amp;OE\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e","brand":"Pass Labs","offers":[{"title":"Black","offer_id":42041650741346,"sku":"PASS-HPA-1C-BLK","price":8995.0,"currency_code":"AUD","in_stock":true},{"title":"Silver","offer_id":42041650774114,"sku":"PASS-HPA-1C-SIL","price":7995.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1040\/6126\/files\/pass-labs-hpa-1c-stereo-headphone-amplifierheadphone-amplifierspass-labs-8111190.png?v=1776041347","url":"https:\/\/www.vinylrevival.com.au\/products\/pass-labs-hpa-1c-stereo-headphone-amp","provider":"Vinyl Revival","version":"1.0","type":"link"}