{"id":2415,"date":"2019-09-26T15:24:22","date_gmt":"2019-09-26T08:24:22","guid":{"rendered":"https:\/\/www.nambinhad.com\/avshow\/?p=2415"},"modified":"2025-05-16T15:24:59","modified_gmt":"2025-05-16T08:24:59","slug":"mark-levinson-preamp-dual-mono-no526-nghe-thuat-cua-su-dieu-khien","status":"publish","type":"post","link":"https:\/\/www.nambinhad.com\/avshow\/tin-tuc\/mark-levinson-preamp-dual-mono-no526-nghe-thuat-cua-su-dieu-khien\/","title":{"rendered":"Mark Levinson Preamp dual-mono No526 – Ngh\u1ec7 thu\u1eadt c\u1ee7a s\u1ef1 \u0111i\u1ec1u khi\u1ec3n"},"content":{"rendered":"\n\n\n
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T\u1eeb n\u0103m 1972, Mark Levinson lu\u00f4n \u0111\u1eb7t ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh l\u00ean h\u00e0ng \u0111\u1ea7u, coi tr\u1ecdng nh\u1ea5t l\u00e0 \u0111\u1ed9 thu\u1ea7n khi\u1ebft c\u1ee7a \u00e2m thanh. \u0110\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y, c\u00e1c k\u1ef9 s\u01b0 Mark Levinson \u0111\u00e3 d\u00e0y c\u00f4ng nghi\u00ean c\u1ee9u d\u1ef1a tr\u00ean nh\u1eefng th\u00e0nh qu\u1ea3 \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ec3 ho\u00e0n thi\u1ec7n tri\u1ebft l\u00fd m\u1ea1ch Pure Path. \u0110\u00e2y l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng t\u00edn hi\u1ec7u dual-mono ri\u00eang bi\u1ec7t, ho\u00e0n to\u00e0n balanced, n\u1ed1i t\u1ea7ng tr\u1ef1c ti\u1ebfp direct-coupled, mang l\u1ea1i \u00e2m thanh \u1edf m\u1ee9c thu\u1ea7n khi\u1ebft nh\u1ea5t v\u00e0 ho\u00e0n to\u00e0n kh\u00f4ng b\u1ecb h\u1ea1n ch\u1ebf hay g\u00f2 b\u00f3.<\/div>\n<\/div>\n
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Kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 s\u1eafp x\u1ebfp c\u00e1c linh ki\u1ec7n cao c\u1ea5p m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd, Pure Path l\u00e0 s\u1ef1 dung h\u00f2a gi\u1eefa khoa h\u1ecdc v\u00e0 ngh\u1ec7 thu\u1eadt, nh\u1eb1m mang l\u1ea1i \u00e2m thanh ho\u00e0n h\u1ea3o nh\u1ea5t c\u1ea3 trong th\u1eed nghi\u1ec7m l\u1eabn th\u1ef1c t\u1ebf. Nh\u01b0 l\u1eddi Albert Einstein \u0111\u00e3 n\u00f3i: “H\u00e3y l\u00e0m m\u1ecdi th\u1ee9 \u0111\u01a1n gi\u1ea3n nh\u1ea5t c\u00f3 th\u1ec3, nh\u01b0ng kh\u00f4ng bao gi\u1edd \u0111\u01a1n gi\u1ea3n h\u01a1n th\u1ebf”.<\/span><\/div>\n
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Mark Levinson No526 l\u00e0\u00a0 chi\u1ebfc preamp h\u00e0ng \u0111\u1ea7u cho ng\u01b0\u1eddi y\u00eau nh\u1ea1c hi\u1ec7n \u0111\u1ea1i. T\u00edn hi\u1ec7u t\u1eeb 6 \u0111\u1ea7u v\u00e0o analog v\u00e0 phono, c\u1ed9ng v\u1edbi 6 \u0111\u1ea7u v\u00e0o digital cho phi\u00ean b\u1ea3n No526, \u0111i qua \u0111\u01b0\u1eddng t\u00edn hi\u1ec7u Pure Path dual-mono direct-coupled full-balanced ho\u00e0n to\u00e0n l\u00e0 class A, gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 thu\u1ea7n khi\u1ebft \u0111\u1ebfn kh\u00f3 tin. V\u1edbi kh\u1ea3 n\u0103ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u ch\u00ednh x\u00e1c nh\u1edd b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u00e2m l\u01b0\u1ee3ng R-2R Ladder, b\u1ed9 DAC Presicion Link 32-bit cao c\u1ea5p, t\u1ea7ng Pure Phono, v\u00e0 c\u00f4ng ngh\u1ec7 kh\u00f4i ph\u1ee5c \u00e2m thanh Harman Clari-Fi, No523 v\u00e0 No526 mang l\u1ea1i ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh xu\u1ea5t s\u1eafc v\u1edbi m\u1ecdi ngu\u1ed3n nh\u1ea1c.<\/span><\/div>\n
Mark Levinson thi\u1ebft k\u1ebf m\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u00e2m l\u01b0\u1ee3ng ho\u00e0n to\u00e0n m\u1edbi g\u1ecdi l\u00e0 R-2R Ladder. Trong c\u01a1 ch\u1ebf \u0111i\u1ec1u khi\u1ec3n \u00e2m l\u01b0\u1ee3ng n\u00e0y, d\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1edfi c\u00e1c \u0111i\u1ec7n tr\u1edf c\u1ed1 \u0111\u1ecbnh, c\u00f3 gi\u00e1 tr\u1ecb ho\u00e0n to\u00e0n t\u01b0\u01a1ng \u0111\u1ed3ng nhau, \u0111i\u1ec1u h\u01b0\u1edbng b\u1eb1ng c\u00e1c c\u00f4ng t\u1eafc analog m\u00e0 ho\u00e0n to\u00e0n kh\u00f4ng s\u1eed d\u1ee5ng c\u01a1 ch\u1ebf c\u01a1 n\u00e0o. C\u00f3 th\u1ec3 n\u00f3i, R-2R Ladder \u0111\u00e3 gi\u1ea3i quy\u1ebft ho\u00e0n to\u00e0n nh\u1eefng v\u1ea5n \u0111\u1ec1 hi\u1ec7n c\u00f3 \u1edf c\u00e1c b\u1ed9 chi\u1ebft \u00e1p c\u01a1 h\u1ecdc ph\u1ed5 th\u00f4ng.
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B\u1ed9 DAC Precision Link trong No526 bi\u1ebfn t\u00edn hi\u1ec7u digital th\u00e0nh \u00e2m thanh analog gi\u00e0u nh\u1ea1c t\u00ednh. \u0110\u1ea7u ra c\u1ee7a chip chuy\u1ec3n \u0111\u1ed5i ESS Sabre32 ho\u1ea1t \u0111\u1ed9ng \u1edf ch\u1ebf \u0111\u1ed9 d\u00f2ng, \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i I\/V ho\u00e0n to\u00e0n balanced \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c t\u00edn hi\u1ec7u \u0111\u00fang nh\u01b0 mong mu\u1ed1n. Nh\u1edd gi\u1eef m\u1ee9c voltage g\u1ea7n nh\u01b0 lu\u00f4n lu\u00f4n b\u1eb1ng 0, t\u00edn hi\u1ec7u ngu\u1ed3n h\u1ea7u nh\u01b0 kh\u00f4ng bao gi\u1edd b\u1ecb m\u00e9o phi tuy\u1ebfn, \u0111\u1ed3ng th\u1eddi d\u1ea3i t\u1ea7n c\u1ef1c r\u1ed9ng v\u00e0 \u0111\u1ed9 m\u00e9o t\u1ed1i thi\u1ec3u. C\u1ea5u tr\u00fac m\u1ea1ch vi sai \u0111\u1ed1i x\u1ee9ng t\u1ef1 \u0111\u1ed9ng lo\u1ea1i b\u1ecf h\u1ebft nhi\u1ec5u v\u00e0 m\u00e9o th\u00f4ng th\u01b0\u1eddng, mang l\u1ea1i t\u00edn hi\u1ec7u c\u1ef1c k\u1ef3 thu\u1ea7n khi\u1ebft.<\/span><\/div>\n
Ngo\u00e0i ra b\u1ed9 DAC Precision Link c\u0169ng c\u00f3 ngu\u1ed3n \u0111i\u1ec7n ri\u00eang c\u1ee7a n\u00f3: ri\u00eang chip chuy\u1ec3n \u0111\u1ed5i \u0111\u00e3 c\u00f3 t\u1edbi 5 b\u1ed9 ngu\u1ed3n \u0111\u1ed9c l\u1eadp, m\u1ed7i k\u00eanh tr\u00e1i\/ph\u1ea3i \u0111\u1ec1u c\u00f3 b\u1ed9 ngu\u1ed3n linear ri\u00eang cho c\u00e1c m\u1ea1ch I\/V v\u00e0 b\u1ed9 l\u1ecdc antialiasing.<\/span><\/div>\n
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No526 c\u00f3 c\u00e1c \u0111\u1ea7u ra stereo balanced (XLR) v\u00e0 single-end (RCA), \u0111\u00e2y c\u0169ng l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb Mark Levinson \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p \u0111\u1ea7u ra cho Headphone \u1edf ngay m\u1eb7t tr\u01b0\u1edbc. M\u1ea1ch ampli headphone n\u00e0y h\u1ed7 tr\u1ee3 c\u00e1c tai nghe l\u00ean t\u1edbi 32 ohm, ho\u1ea1t \u0111\u1ed9ng \u1edf class A v\u00e0 s\u1eed d\u1ee5ng ch\u00ednh m\u1ea1ch output thay v\u00ec ph\u1ea3i d\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng t\u00edn hi\u1ec7u th\u1ee9 hai, l\u00e0m \u0111\u01a1n gi\u1ea3n h\u00f3a thi\u1ebft k\u1ebf b\u00ean trong preamp.<\/span><\/div>\n
Nh\u1edd m\u1ed9t b\u1ed9 l\u1ecdc high-pass 80Hz b\u1eadc b\u1ed1n (fourth-order) t\u00f9y ch\u1ecdn, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 b\u1ed5 sung loa subwoofer, c\u00f9ng ch\u1ebf \u0111\u1ed9 unity-gain SSP \u0111\u1ec3 ph\u1ed1i gh\u00e9p v\u1edbi h\u1ec7 th\u1ed1ng home cinema. K\u1ebft n\u1ed1i \u0111i\u1ec1u khi\u1ec3n hi\u1ec7n \u0111\u1ea1i bao g\u1ed3m Ethernet, RS-232, DC trigger, \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa v\u00e0 \u0111\u1ea7u v\u00e0o IR, v\u00e0 USB h\u1ed7 tr\u1ee3 \u0111i\u1ec1u khi\u1ec3n m\u1ea1ng.<\/p>\n

Ngu\u1ed3n:<\/span>\u00a0https:\/\/www.hifivietnam.vn\/tieu-diem\/avshow-2019mark-levinson-preamp-dual-mono-no526-nghe-thuat-cua-su-dieu-khien\/<\/span><\/div>\n

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T\u1ea5t c\u1ea3 c\u00e1c linh ki\u1ec7n c\u1ee7a Mark Levinson \u0111\u1ec1u l\u00e0 lo\u1ea1i cao c\u1ea5p nh\u1ea5t, l\u00fd t\u01b0\u1edfng nh\u1ea5t. \u0110i\u1ec7n tr\u1edf \u1edf nh\u1eefng v\u1ecb tr\u00ed gain v\u00e0 feedback quan tr\u1ecdng \u0111\u1ec1u l\u00e0 lo\u1ea1i tantalum nitride film m\u1ecfng. Tantalum nitride l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u c\u1ef1c k\u1ef3 \u0111\u1eaft ti\u1ec1n, th\u01b0\u1eddng ch\u1ec9 \u0111\u01b0\u1ee3c d\u00f9ng trong trang b\u1ecb qu\u00e2n \u0111\u1ed9i b\u1edfi t\u00ednh \u1ed5n \u0111\u1ecbnh t\u1edbi kh\u00f3 tin c\u1ee7a n\u00f3, b\u1ea5t ch\u1ea5p nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 nhi\u1ec5u v\u00f4 c\u00f9ng th\u1ea5p, v\u00e0 ho\u00e0n to\u00e0n kh\u00f4ng ch\u1ecbu \u1ea3nh h\u01b0\u1edfng c\u1ee7a t\u1eeb tr\u01b0\u1eddng. Nh\u1edd \u0111\u00f3, ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh c\u00e0ng tr\u1edf n\u00ean r\u1ed9ng m\u1edf v\u00e0 t\u1ef1 do h\u01a1n, kh\u00f4ng b\u1ecb low-level nonlinearity nh\u01b0 v\u1edbi c\u00e1c v\u1eadt li\u1ec7u ph\u1ed5 th\u00f4ng kh\u00e1c ho\u1ea1t \u0111\u1ed9ng thi\u1ebfu c\u00e2n b\u1eb1ng trong ho\u00e0n c\u1ea3nh n\u00f3ng l\u1ea1nh li\u00ean t\u1ee5c khi ampli \u0111ang ch\u1ea1y. T\u01b0\u01a1ng t\u1ef1, t\u1ee5 l\u1ecdc \u1edf nh\u1eefng v\u1ecb tr\u00ed quan tr\u1ecdng l\u00e0 lo\u1ea1i t\u1ee5 film ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh \u1edf m\u1ecdi nhi\u1ec7t \u0111\u1ed9 v\u00e0 t\u1ea7n s\u1ed1 kh\u00e1c nhau.<\/span><\/div>\n
V\u1ecf m\u00e1y c\u1ee7a No526 \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb nh\u00f4m 6000-series chuy\u00ean d\u00f9ng ch\u1ebf t\u1ea1o m\u00e1y bay, \u0111\u01b0\u1ee3c c\u1eaft g\u1ecdt v\u00f4 c\u00f9ng t\u1ec9 m\u1ec9. T\u1ea5t c\u1ea3 c\u00e1c link ki\u1ec7n th\u00e0nh ph\u1ea7n \u0111\u1ec1u \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn v\u00e0 s\u1eafp \u0111\u1eb7t kh\u00f4ng ch\u1ec9 mang l\u1ea1i ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh kh\u00f4ng gi\u1edbi h\u1ea1n m\u00e0 c\u00f2n c\u00f3 t\u00ednh th\u1ea9m m\u1ef9 cao.<\/span><\/div>\n
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To\u00e0n b\u1ed9 thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb Mark Levinson \u0111\u1ec1u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i Shelton, Connecticut, v\u00e0 l\u1eafp r\u00e1p t\u1ea1i nh\u00e0 m\u00e1y \u1edf Westford, Massachusetts, \u0111\u1ea1t chu\u1ea9n ISO 9001 v\u00e0 tu\u00e2n theo s\u1ef1 ki\u1ec3m \u0111\u1ecbnh kh\u1eaft khe nh\u1ea5t c\u1ee7a Mark Levinson.<\/span><\/div>\n
Mark Levinson Preamp dual-mono No526 s\u1ebd \u0111\u01b0\u1ee3c nh\u00e0 ph\u00e2n ph\u1ed1i hi-end Thanh T\u00f9ng audio tr\u00ecnh di\u1ec5n c\u00f9ng \u201c\u0111\u1ed1i t\u00e1c\u201d amply monoblock Mark Levinson No.536 v\u00e0 loa JBL 4367 t\u1ea1i AVSHOW S\u00e0i G\u00f2n c\u00e1c ng\u00e0y 28-29-30 th\u00e1ng 9 t\u1edbi \u0111\u00e2y<\/span><\/div>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

T\u1eeb n\u0103m 1972, Mark Levinson lu\u00f4n \u0111\u1eb7t ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh l\u00ean h\u00e0ng \u0111\u1ea7u, coi tr\u1ecdng nh\u1ea5t l\u00e0 \u0111\u1ed9 thu\u1ea7n khi\u1ebft c\u1ee7a \u00e2m thanh. \u0110\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y, c\u00e1c k\u1ef9 s\u01b0 Mark Levinson \u0111\u00e3 d\u00e0y c\u00f4ng nghi\u00ean c\u1ee9u d\u1ef1a tr\u00ean nh\u1eefng th\u00e0nh qu\u1ea3 \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ec3 […]<\/p>\n","protected":false},"author":2,"featured_media":2416,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/posts\/2415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/comments?post=2415"}],"version-history":[{"count":2,"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/posts\/2415\/revisions"}],"predecessor-version":[{"id":2659,"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/posts\/2415\/revisions\/2659"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/media\/2416"}],"wp:attachment":[{"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/media?parent=2415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/categories?post=2415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nambinhad.com\/avshow\/wp-json\/wp\/v2\/tags?post=2415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}