{"id":39455,"date":"2022-06-01T22:36:07","date_gmt":"2022-06-01T20:36:07","guid":{"rendered":"https:\/\/www.altei.cz\/hifi\/?post_type=product&p=39455"},"modified":"2023-11-30T14:53:15","modified_gmt":"2023-11-30T13:53:15","slug":"oldstep-enhance-elektronkovy-phono-predzesilovac","status":"publish","type":"product","link":"https:\/\/www.altei.cz\/hifi\/produkt\/oldstep-enhance-elektronkovy-phono-predzesilovac\/","title":{"rendered":"OldStep ENHANCE elektronkov\u00fd phono p\u0159edzesilova\u010d"},"content":{"rendered":"

P\u0159edzesilova\u010d Enhance je pokra\u010dovatelem purit\u00e1nsk\u00e9 High End elektronkov\u00e9 konstrukce firmy OldStep. Filozofie koncepce je op\u011bt postavena na \u010dist\u00e9 t\u0159\u00edd\u011b A, zero feedback zapojen\u00ed a s pasivn\u00ed paraleln\u00ed RIAA korekc\u00ed, ale na rozd\u00edl od zesilova\u010de Basic je kmito\u010dtov\u00e1 korekce RIAA rozd\u011blena do dvou stup\u0148\u016f. Ka\u017ed\u00fd z korek\u010dn\u00edch \u010dlen\u016f je tak nap\u00e1jen samostatn\u00fdm zesilovac\u00edm stupn\u011bm s definovan\u00fdm vnit\u0159n\u00edm odporem umo\u017e\u0148uj\u00edc\u00ed p\u0159esn\u00e9 nastaven\u00ed zlomov\u00fdch kmito\u010dt\u016f RIAA charakteristiky bez vz\u00e1jemn\u00e9ho ovliv\u0148ov\u00e1n\u00ed s vynikaj\u00edc\u00edm soub\u011bhem lev\u00e9ho a prav\u00e9ho kan\u00e1lu. P\u0159edzesilova\u010d Enhance podporuje p\u0159ipojen\u00ed p\u0159enosek MM ve standardn\u00ed a MC v zak\u00e1zkov\u00e9 verzi, kter\u00e1 d\u00edky p\u0159\u00eddavn\u00e9mu zesilovac\u00edmu stupni s n\u00edzko\u0161umov\u00fdm tranzistorem FET doru\u010duje pot\u0159ebn\u00e9 zes\u00edlen\u00ed a mo\u017enost optim\u00e1ln\u00edho individu\u00e1ln\u00edho p\u0159izp\u016fsoben\u00ed vstupn\u00ed impedance pou\u017eit\u00e9 MC p\u0159enosce. Dvojit\u00e1 kultovn\u00ed trioda 6SL7 v prvn\u00edm stupni s paraleln\u011b spojen\u00fdmi syst\u00e9my minimalizuje \u0161um a dod\u00e1v\u00e1 zvuku charakteristickou podmanivost, kterou dokresluje dvojit\u00e1 trioda 6SN7 pou\u017eit\u00e1 jako budi\u010d druh\u00e9ho stupn\u011b RIAA korektoru a katodov\u00fd sledova\u010d s extr\u00e9mn\u011b n\u00edzk\u00fdm v\u00fdstupn\u00edm odporem d\u00edky kter\u00e9mu lze p\u0159edzesilova\u010d p\u0159ipojit k pasivn\u00edm regul\u00e1tor\u016fm hlasitosti nebo jak\u00e9mukoli dal\u0161\u00edmu zesilova\u010di. P\u0159edzesilova\u010d Enhance op\u011bt pou\u017e\u00edv\u00e1 ov\u011b\u0159en\u00e9 pe\u010dliv\u011b vyb\u00edran\u00e9 a p\u00e1rovan\u00e9 elektronky OldStep, kondenz\u00e1tory Audiophiler a konektory Neutric. Z\u00e1kazn\u00edk m\u016f\u017ee zvolit elektronky podle sv\u00e9ho vkusu z \u0159ady renomovan\u00fdch sou\u010dasn\u00fdch v\u00fdrobc\u016f, nebo objevit unik\u00e1tn\u00ed kouzlo historick\u00fdch kus\u016f ze star\u00fdch sklad\u016f. Nap\u00e1jen\u00ed je \u0159e\u0161eno zcela bez kompromisu odd\u011blen\u00fdm nap\u00e1jec\u00edm zdrojem, kter\u00fd poskytuje stabilizovan\u00e9 nap\u011bt\u00ed nejen pro anody elektronek ale tak\u00e9 pro \u017ehav\u00edc\u00ed obvody. Samoz\u0159ejmost\u00ed je funkce soft start – pomal\u00fd n\u00e1b\u011bh \u017ehav\u00edc\u00edho a n\u00e1sledn\u011b anodov\u00e9ho proudu pro dosa\u017een\u00ed maxim\u00e1ln\u00ed \u017eivotnosti elektronek.<\/p>\n

V\u00edce zde<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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