{"product_id":"dbx-rack","title":"dbx 3BX 3-Band Dynamic Range Expander – USED","description":"\u003cp\u003e\u003cb\u003edbx 3BX 3-Band Dynamic Range Expander – Used\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eBring life, punch, and authentic clarity back to compressed vinyl records, cassette tapes, or modern digital audio with the legendary dbx 3BX 3-Band Dynamic Range Expander. Unlike single-band expanders that cause distracting audio \"breathing\" or \"pumping,\" the vintage 3BX splits your signal into three discrete frequency bands (Low, Mid, and High) and processes each independently. The result is punchy transient response, deeper low end, crystal-clear highs, and up to 50% dynamic range expansion without altering natural tonal balance.\u003c\/p\u003e\n\u003cp\u003eCondition is Good overall. The unit shows honest vintage wear and age, including light surface rust on the outer chassis enclosure and typical mounting wear around the rack ears and faceplate edges. Otherwise, it remains fully functional with clean signal output across both channels.\u003c\/p\u003e\n\u003cp\u003eHoused in a substantial 2U chassis with classic horizontal faders and multi-band LED metering, the dbx 3BX remains one of the most sought-after analog audio restoration tools for audiophile hi-fi setups and studio outboard racks alike. Our technicians have bench-tested the unit and verified all sliders, buttons, LED meter segments, and signal paths for proper operation.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eModel:\u003c\/b\u003e dbx 3BX 3-Band Dynamic Range Expander\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFinish:\u003c\/b\u003e Black Faceplate with Silver\/Gold Trim \u0026amp; Chassis\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCondition:\u003c\/b\u003e Good\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eForm Factor:\u003c\/b\u003e 19” Standard Rackmount (2U Height)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eExpansion Ratio:\u003c\/b\u003e Continuously variable from 1.0 to 1.5 (0% to 50% expansion)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDynamic Range:\u003c\/b\u003e Up to 110 dB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFrequency Response:\u003c\/b\u003e 20Hz – 20kHz (±0.5dB)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eTHD:\u003c\/b\u003e Less than 0.1% at maximum expansion\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eInputs\/Outputs:\u003c\/b\u003e RCA Stereo Line In\/Out, Pre\/Post Tape Monitor Loop\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eControls:\u003c\/b\u003e Expansion Level, Transition Level, Source\/Tape Selector, Post\/Pre Selector, Bypass Switch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePower Requirements:\u003c\/b\u003e 120V AC, 50\/60Hz\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eCondition Notes\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eGood overall vintage cosmetic condition\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eShows surface rusting on chassis\/casing and age-appropriate rack wear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFaceplate and meters present well\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e100% fully functional signal path and processing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAll horizontal faders and pushbutton controls move smoothly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLED meter segments illuminate and track gain changes properly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBench-tested and ready for integration into your setup\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eProfessionally Inspected \u0026amp; Ready to Play\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eEvery piece of pre-owned gear at BCR Music \u0026amp; Sound receives a thorough inspection before it reaches our showroom or website. We verify signal integrity, control operation, metering, hardware, and overall functionality. This ensures your outboard gear arrives ready to integrate seamlessly into your rig right out of the box.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSecure Packing \u0026amp; Shipping\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eWe take shipping seriously. Every item is carefully protected using professional packing materials, double-boxed when necessary, and fully insured for transit. Whether you're across Pennsylvania or across the country, you can buy with confidence knowing your gear has been prepared to arrive safely and exactly as described.\u003c\/p\u003e","brand":"dbx","offers":[{"title":"Default Title","offer_id":48136584593634,"sku":"21145","price":349.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4094\/9941\/files\/01C79170-2EEF-40ED-B201-B3416D02E0A1.jpg?v=1785946477","url":"https:\/\/bcrmusic.com\/products\/dbx-rack","provider":"BCR Music \u0026 Sound","version":"1.0","type":"link"}