{"product_id":"aurorasound-hfsa-power-amplifier","title":"Aurorasound HFSA Power Amplifier","description":"\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 0);\"\u003eWe are currently experiencing a 2-3 week factory lead-time. You can place your order online and we will inform you when your unit is ready to ship. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eShinobu Karaki-san's brand-new tube amp is out - the HFSA Power Amplifier, utilizing EL34 valves with an output of 31 Watts per channel.\u003c\/p\u003e\n\u003cp\u003eThis is a tube amplifier composed of full-stage vacuum tubes. The input stage uses ECC83 and ECC82 tubes, while the output stage features EL34 push-pull configuration with a Lundahl output transformer and UL connection, delivering 31W + 31W of output power.\u003c\/p\u003e\n\u003cp\u003eThe amplifier is housed in a 22mm thick solid maple wood frame, with a 4mm solid aluminum top plate. This design ensures a perfectly rigid body structure with no deflection. The heavyweight transformer and sensitive vacuum tube components are securely supported, enabling the reproduction of substantial mid-low frequencies and delicate high frequencies.\u003c\/p\u003e\n\u003cp\u003eCarefully designed and hand-crafted, this amplifier not only meets the demands of the modern digital high-resolution era but also provides ample functionality and performance for analog playback. Built to last, it is a tube amplifier that will remain unchanged for decades to come.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAs a full tube amplifier, this model comes standard with 1 pair RCA and 1 pair balanced XLR balanced inputs, WBT speaker terminals (4-8 Ohm) fitted for spades and banana as well as a bonnet cover. \u003c\/p\u003e\n\u003cp\u003eThe components are selected for their high quality and reliability: the resistors are from Vishay, PRP, and Japanese TAKUMAN; the film capacitors are WIMA (Germany), and the electrolytic capacitors are TDK-EPCOS. We ensure that only premium parts are used.\u003c\/p\u003e\n\u003cp\u003eThe output transformers come from Lundahl. The power and choke transformers are custom-made in Japan for Aurorasound, while the rectifier diode is a ROHM silicon carbide model, offering the lowest noise and highest voltage capabilities available. All terminals are carefully selected and feature thick-walled gold plating for enhanced performance.\u003c\/p\u003e\n\u003cp\u003eThe EL34 tubes operate with a self-biasing system, making maintenance easy. They can be replaced with other EL34 brands without requiring any bias adjustments.\u003c\/p\u003e\n\u003ch6\u003eSpecifications\u003c\/h6\u003e\n\u003cdiv\u003e- Input: RCA LINE x1, balanced XLR Line x1\u003cbr\u003e- Gain \/ Input sensitivity: 33dB \/ 440mV\u003cbr\u003e- Input impedance:  24kΩ\u003cbr\u003e- Output: 31W +31W  @8ohm\u003cbr\u003e- Frequency response: 10Hz–30kHz, -3dB\u003cbr\u003e- THD+N: 0.1% 1kHz\u003cbr\u003e- SNR: 98dB, A-weighted\u003cbr\u003e- AC power voltage: Europe\/Asia model 240V\/230V, USA 120V\u003cbr\u003e- Power consumption 200W\u003cbr\u003e- Size, Weight: W440 x D290 x H228mm without knobs\/terminals, 20kg\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Aurorasound","offers":[{"title":"120V","offer_id":43764179566710,"sku":null,"price":9990.0,"currency_code":"USD","in_stock":true},{"title":"120V w\/SR Master fuse","offer_id":43943864926326,"sku":null,"price":10240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/4029\/files\/HFSA-Poweramp001-1280-filter_96edf3d5-8f90-419a-a491-f10480ef8c69.jpg?v=1785898993","url":"https:\/\/highend-electronics.com\/products\/aurorasound-hfsa-power-amplifier","provider":"highend-electronics, inc.","version":"1.0","type":"link"}