{"product_id":"hrk-sm2558-mixer-excellent","title":"HRK SM2558 - Mixer - Excellent","description":"\u003ch1\u003eHRK SM2558 - Mixer - Excellent\u003c\/h1\u003e\n\n\u003ch2\u003eWhy This One\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eExcellent condition — light signs of use, no obvious issues\u003c\/li\u003e\n  \u003cli\u003eFully tested — all applicable functions verified working\u003c\/li\u003e\n  \u003cli\u003eDiscrete Class A, transformer-output British summing with NOS transistors and +18dBu headroom.\u003c\/li\u003e\n  \u003cli\u003eA boutique UK-built 500-series summing module sold direct, keeping cost well below comparable alternatives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCondition: Excellent\u003c\/h2\u003e\n\n\u003cp\u003eThis HRK SM2558 is an excellent-condition mixer. It has passed our 8-point functional test, with 4 item(s) not applicable to this unit. Please review all photos carefully, as they provide an accurate representation of the cosmetic condition of the product.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eHRK SM2558\u003c\/li\u003e\n  \u003cli\u003eNo additional accessories included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout This Model\u003c\/h2\u003e\n\u003cp\u003eThe HRK SM2558 is a British-made, single 500-series module designed for analog summing outside the box. It accepts 10 inputs in total — 8 via a front-panel DB25 connector and 2 via front-panel TRS jacks — with all inputs electronically balanced at 20kΩ impedance. The output stage uses custom HRK audio transformers driven by discrete Class A circuitry built around NOS transistors, delivering a +18dBu headroom ceiling on the summed output via rear-panel XLR. A front-panel switch engages Vintage Console Mode, which introduces harmonic saturation through the output transformers, while a MON switch routes the main outputs to the TRS jacks for latency-free direct monitoring. The first 8 inputs can be routed to the left bus, right bus, or both via PCB jumpers, giving flexible stereo placement. Drawing less than 100mA, it runs comfortably in any standard 500-series rack.\u003c\/p\u003e\n\n\u003cp\u003eA great opportunity to own a HRK SM2558 at this price point.\u003c\/p\u003e","brand":"HRK","offers":[{"title":"Default Title","offer_id":53714844254545,"sku":null,"price":149.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0775\/6913\/0833\/files\/2edd9e55-e24f-4ce3-98a9-d83f1e3a2594.jpg?v=1778166189","url":"https:\/\/www.audiotrader.co.uk\/products\/hrk-sm2558-mixer-excellent","provider":"Audio Trader","version":"1.0","type":"link"}