{"product_id":"aur-ref75se-sn49930","title":"Audio Research REF75SE Stereo Tube Power Amplifier","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e75 watts per channel from two KT150 output tubes per side — Audio Research's Special Edition revision of the REF75, which replaced the KT120 tubes of the original with the larger KT150, one of the most capable beam tetrodes currently in production. The SE designation goes beyond the tube swap: upgraded internal components, improved power supply regulation, and the circuit refinements Audio Research applies when the baseline design is already at reference level and they want to take it further. Frequency response from 0.7Hz to 75kHz. Power bandwidth 7Hz to 60kHz. THD typically 0.6% at full rated output, below 0.05% at 1 watt — the distortion characteristic of a properly designed tube amplifier, where the numbers at listening levels are a fraction of what the spec sheet reports at clipping. The REF75SE is Audio Research's argument that a stereo chassis can deliver the full REF experience for systems that don't require monoblock power — the same circuit topology, the same transformer quality, the same engineering DNA as the reference monoblocks in a single enclosure at a price that reflects the difference in materials rather than a compromise in design.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan style=\"color: rgb(253, 183, 22);\"\u003e$12,999 MSRP\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003e\u003cb\u003e\u003ci\u003eDue to size and weight, this item may incur an additional shipping surcharge and is listed as Store Pick Up Only. Contact us for a quote if you wish to have it Shipped.\u003cbr\u003e\u003cbr\u003ePhone: \u003c\/i\u003e\u003c\/b\u003e888-248-3246\u003cb\u003e\u003ci\u003e\u003cbr\u003eEmail: \u003c\/i\u003e\u003c\/b\u003e\u003ca style=\"color: rgb(255, 255, 255);\" href=\"mailto:info@echohifi.com\"\u003e\u003cb\u003e\u003ci\u003einfo@echohifi.com\u003c\/i\u003e\u003c\/b\u003e\u003c\/a\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"\/pages\/gear-inquiry\" class=\"button button--primary\"\u003e\u003cspan class=\"btn-text\"\u003eInquire Now\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":46684852060297,"sku":"REF75SE-SN49930","price":3999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/4557\/0185\/files\/AudioResearchref75.png?v=1778434290","url":"https:\/\/echohifi.com\/products\/aur-ref75se-sn49930","provider":"Echo Audio","version":"1.0","type":"link"}