{"id":1223,"date":"2014-07-03T16:34:44","date_gmt":"2014-07-03T09:34:44","guid":{"rendered":"http:\/\/www.saigonstereo.com\/home\/?p=1223"},"modified":"2015-07-17T11:34:16","modified_gmt":"2015-07-17T04:34:16","slug":"kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic","status":"publish","type":"post","link":"https:\/\/www.saigonstereo.com\/home\/kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic\/","title":{"rendered":"KX-R: Thi\u1ebft k\u1ebf pre-amplifier \u0111\u1ea7u b\u1ea3ng c\u1ee7a Ayre Acoustic"},"content":{"rendered":"<p>HFVN &#8211; Trong v\u00f4 v\u00e0n c\u00e1i t\u00ean trong ng\u00e0nh c\u00f4ng nghi\u1ec7p hi-fi, hi\u1ebfm c\u00f3 m\u1ed9t h\u00e3ng s\u1ea3n xu\u1ea5t n\u00e0o \u0111\u1ea1t \u0111\u01b0\u1ee3c nhi\u1ec1u th\u00e0nh c\u00f4ng tr\u00ean m\u1ed7i s\u1ea3n ph\u1ea9m c\u1ee7a m\u00ecnh nh\u01b0 Ayre Acoustics. \u0110\u01b0\u1ee3c th\u00e0nh l\u1eadp b\u1edfi k\u1ef9 s\u01b0 \u00e2m thanh t\u00ean tu\u1ed5i Charles Hansen, c\u0169ng l\u00e0 cha \u0111\u1ebb c\u1ee7a th\u01b0\u01a1ng hi\u1ec7u loa danh ti\u1ebfng Avalon, h\u1ea7u nh\u01b0 t\u1ea5t c\u1ea3 t\u00e1c ph\u1ea9m c\u1ee7a h\u00e3ng \u00e2m thanh M\u1ef9 \u0111\u1ec1u \u0111\u1ec3 l\u1ea1i d\u1ea5u \u1ea5n b\u1eb1ng c\u00e1c \u0111\u00e1nh gi\u00e1 t\u00edch c\u1ef1c c\u00f9ng \u0111a d\u1ea1ng c\u00e1c gi\u1ea3i th\u01b0\u1edfng c\u1ee7a nhi\u1ec1u t\u1ea1p ch\u00ed audio tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi.<\/p>\n<div id=\"attachment_3828\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.hifivietnam.vn\/vi\/wp-content\/uploads\/2014\/06\/ayre_1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3828\" class=\"wp-image-3828 size-full\" src=\"http:\/\/www.hifivietnam.vn\/vi\/wp-content\/uploads\/2014\/06\/ayre_1.jpg\" alt=\"ayre_1\" width=\"500\" height=\"334\" \/><\/a><p id=\"caption-attachment-3828\" class=\"wp-caption-text\">KX-R c\u00f3 thi\u1ebft k\u1ebf \u0111\u01a1n gi\u1ea3n v\u00e0 nh\u1ecf g\u1ecdn.<\/p><\/div>\n<p>&nbsp;<\/p>\n<p>Gi\u1ea3i m\u00e3 nguy\u00ean nh\u00e2n th\u00e0nh c\u00f4ng c\u1ee7a Ayre, nhi\u1ec1u chuy\u00ean gia g\u00f3i g\u1ecdn l\u1ea1i \u1edf ba \u0111i\u1ec3m c\u1ed1t l\u00f5i: kh\u00f4ng s\u1eed d\u1ee5ng m\u1ea1ch h\u1ed3i ti\u1ebfp \u00e2m, thi\u1ebft k\u1ebf c\u00e1c module x\u1eed l\u00fd \u0111\u1ed1i x\u1ee9ng v\u00e0 quan t\u00e2m \u0111\u1ebfn m\u1ecdi th\u1ee9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00edn hi\u1ec7u, k\u1ec3 c\u1ea3 nh\u1eefng chi ti\u1ebft nh\u1ecf nh\u1ea5t m\u00e0 \u00edt ai \u0111\u1ec3 \u00fd \u0111\u1ebfn.<\/p>\n<p>KX-R, pre-ampli \u0111\u1ea7u b\u1ea3ng v\u00ec th\u1ebf c\u0169ng \u0111\u01b0\u1ee3c th\u1eeba h\u01b0\u1edfng nh\u1eefng thi\u1ebft k\u1ebf \u0111\u1eb7c tr\u01b0ng l\u00e0m n\u00ean t\u00ean tu\u1ed5i c\u1ee7a Ayre. S\u1ea3n ph\u1ea9m c\u00f3 b\u1ec1 ngo\u00e0i \u0111\u01a1n gi\u1ea3n v\u00e0 kh\u00e1 nh\u1ecf so v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng 18 kg c\u1ee7a m\u00ecnh n\u00ean r\u1ea5t v\u1eefng ch\u00e3i, ch\u1eafc ch\u1eafn. B\u00ean trong KX-R v\u1eabn l\u00e0 c\u1ea5u tr\u00fac \u0111\u1ed1i x\u1ee9ng, bi\u1ebfn th\u1ebf ch\u1ea5t l\u01b0\u1ee3ng cao, m\u1ea1ch t\u1ed1i \u01b0u, v\u00e0 \u0111\u1eb7c bi\u1ec7t h\u01a1n c\u1ea3 l\u00e0 c\u00f4ng ngh\u1ec7 VGT ho\u00e0n thi\u1ec7n kh\u1ea3 n\u0103ng \u0111i\u1ec1u ch\u1ec9nh \u00e2m l\u01b0\u1ee3ng, y\u1ebfu t\u1ed1 &#8220;s\u1ed1ng c\u00f2n&#8221; \u0111\u1ed1i v\u1edbi m\u1ed9t pre-ampli hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p>S\u1ea3n ph\u1ea9m c\u00f3 m\u1ee9c gi\u00e1 kh\u00f4ng h\u1ec1 r\u1ebb, nh\u01b0ng r\u1ea5t \u0111\u00e1ng ti\u1ec1n b\u1ecf ra, kho\u1ea3ng 18.500 USD.<\/p>\n<p><strong>\u0110\u1eb7t \u0111i\u1ec3m thi\u1ebft k\u1ebf<\/strong><\/p>\n<p>V\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m b\u1ec1 ngo\u00e0i, KX-R g\u00e2y \u1ea5n t\u01b0\u01a1ng v\u1edbi ng\u01b0\u1eddi d\u00f9ng b\u1edfi h\u00ecnh \u1ea3nh \u0111\u01a1n gi\u1ea3n m\u00e0 v\u1eefng ch\u00e3i. S\u1edf d\u0129 c\u00f3 \u0111i\u1ec1u n\u00e0y b\u1edfi t\u01b0\u01a1ng t\u1ef1 nh\u01b0 nhi\u1ec1u pre-ampli kh\u00e1c, s\u1ea3n ph\u1ea9m r\u1ea5t nh\u1ecf g\u1ecdn, nh\u01b0ng v\u1eabn n\u1eb7ng 18 kg nh\u1edd c\u00f3 b\u1ed9 khung nh\u00f4m d\u00e0y, \u0111\u1ea3m b\u1ea3o tri\u1ec7t ti\u00eau rung \u0111\u1ed9ng t\u1eeb m\u00f4i tr\u01b0\u1eddng, v\u00e0 t\u1eeb thi\u1ebft b\u1ecb trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng. Thay v\u00ec l\u1eafp gh\u00e9p th\u00f4ng th\u01b0\u1eddng, v\u1ecf m\u00e1y n\u00e0y c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdt, m\u00e0i t\u1eeb kh\u1ed1i nh\u00f4m v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao, sau \u0111\u00f3 m\u1edbi ti\u1ebfn h\u00e0nh \u0111\u1eb7t c\u00e1c linh ki\u1ec7n kh\u00e1c v\u00e0o b\u00ean trong.<\/p>\n<div id=\"attachment_3829\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.hifivietnam.vn\/vi\/wp-content\/uploads\/2014\/06\/ayre_2.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3829\" class=\"wp-image-3829 size-full\" src=\"http:\/\/www.hifivietnam.vn\/vi\/wp-content\/uploads\/2014\/06\/ayre_2.jpg\" alt=\"ayre_2\" width=\"500\" height=\"287\" \/><\/a><p id=\"caption-attachment-3829\" class=\"wp-caption-text\">Ph\u1ea7n v\u1ecf m\u00e1y (chassis) \u0111\u01b0\u1ee3c CNC t\u1eeb m\u1ed9t t\u1ea5m nh\u00f4m nguy\u00ean kh\u1ed1i \u0111\u1ed3ng nh\u1ea5t.<\/p><\/div>\n<p>Ngo\u00e0i ra, c\u00f2n kh\u00f4ng \u00edt c\u00e1c \u0111i\u1ec3m \u0111\u1eb7c bi\u1ec7t c\u1ee7a KX-R trong thi\u1ebft k\u1ebf. \u0110\u01a1n c\u1eed nh\u01b0 \u0111\u00e8n hi\u1ec3n th\u1ecb \u1edf m\u1eb7t tr\u01b0\u1edbc. Nh\u1eadn th\u1ea5y \u0111\u00e8n th\u00f4ng th\u01b0\u1eddng \u1edf c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c c\u00f3 t\u1ea5t c\u1ea3 \u0111i\u1ec3m \u1ea3nh c\u00f9ng l\u00fac ho\u1ea1t \u0111\u1ed9ng, d\u00f9 c\u00f3 hi\u1ec3n th\u1ecb n\u1ed9i dung hay kh\u00f4ng, Ayre cho r\u1eb1ng \u0111i\u1ec1u n\u00e0y c\u0169ng s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00edn hi\u1ec7u \u00e2m thanh \u0111\u01b0\u1ee3c x\u1eed l\u00fd trong thi\u1ebft b\u1ecb. V\u00ec v\u1eady, h\u00e3ng n\u00e0y \u0111\u00e3 nghi\u00ean c\u1ee9u thi\u1ebft k\u1ebf m\u1ed9t lo\u1ea1i panel m\u1edbi cho ph\u00e9p ch\u1ec9 th\u1eafp s\u00e1ng nh\u1eefng \u0111i\u1ec3m \u1ea3nh c\u1ea7n thi\u1ebft, qua \u0111\u00f3 gi\u1ea3m thi\u1ec3u nh\u1eefng t\u00e1c \u0111\u1ed9ng x\u1ea5u c\u1ee7a \u0111\u00e8n hi\u1ec3n th\u1ecb v\u1edbi t\u00edn hi\u1ec7u. Vi\u1ec7c n\u00e0y l\u00e0 m\u1ed9t minh ch\u1ee9ng r\u00f5 r\u00e0ng v\u1ec1 tri\u1ebft l\u00fd &#8220;lu\u00f4n quan t\u00e2m \u0111\u1ebfn t\u1eebng chi ti\u1ebft d\u00f9 l\u00e0 nh\u1ecf nh\u1ea5t&#8221; c\u1ee7a Ayre.<\/p>\n<p>KX-R v\u1eabn s\u1eed d\u1ee5ng thi\u1ebft k\u1ebf module \u0111\u1ed1i x\u1ee9ng c\u1ed5 \u0111i\u1ec3n. \u1ede \u0111\u00e2y, Ayre \u00e1p d\u1ee5ng m\u00f4 h\u00ecnh c\u1ee7a hai ampli monoblock MX-R \u0111\u00e3 r\u1ea5t th\u00e0nh c\u00f4ng tr\u01b0\u1edbc \u0111\u00f3 v\u00e0o s\u1ea3n ph\u1ea9m. C\u1ee5 th\u1ec3, b\u00ean trong pre-ampli s\u1ebd l\u00e0 hai mono-pre-ampli kh\u00e1c v\u1edbi nh\u1eefng linh ki\u1ec7n ho\u00e0n to\u00e0n t\u01b0\u01a1ng t\u1ef1 \u0111\u1ea3m nhi\u1ec7m hai k\u00eanh \u00e2m thanh ri\u00eang bi\u1ec7t. Vi\u1ec7c t\u00e1ch r\u1eddi th\u00e0nh hai module kh\u00e1c nhau s\u1ebd tr\u00e1nh \u0111\u01b0\u1ee3c s\u1ef1 ch\u1ed3ng ch\u00e9o, \u0111\u1ed3ng th\u1eddi c\u0169ng gi\u1ea3m nhi\u1ec5u t\u00edn hi\u1ec7u do m\u1ed7i qu\u00e1 tr\u00ecnh x\u1eed l\u00fd \u00e2m thanh \u1edf hai k\u00eanh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhau. Tuy nhi\u00ean, m\u1eb7t tr\u00e1i c\u1ee7a thi\u1ebft k\u1ebf n\u00e0y l\u00e0 chi ph\u00ed s\u1ea3n xu\u1ea5t.<\/p>\n<div id=\"attachment_3830\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.hifivietnam.vn\/vi\/wp-content\/uploads\/2014\/06\/ayre_3.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3830\" class=\"wp-image-3830 size-full\" src=\"http:\/\/www.hifivietnam.vn\/vi\/wp-content\/uploads\/2014\/06\/ayre_3.jpg\" alt=\"ayre_3\" width=\"500\" height=\"327\" \/><\/a><p id=\"caption-attachment-3830\" class=\"wp-caption-text\">To\u00e0n b\u1ed9 bo m\u1ea1ch \u0111\u1ec1u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ed1i x\u1ee9ng v\u00e0 b\u1ed1 tr\u00ed \u0111\u1ed9c l\u1eadp gi\u1eefa 2 k\u00eanh tr\u00e1i \/ ph\u1ea3i<\/p><\/div>\n<p>N\u1ed5i b\u1eadt trong nh\u1eefng c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, \u0111i\u1ec1u l\u00e0m KX-R kh\u00e1c bi\u1ec7t v\u1edbi nh\u1eefng \u0111\u1ed1i th\u1ee7 high-end kh\u00e1c, l\u00e0 c\u00f4ng ngh\u1ec7 \u0111i\u1ec1u ch\u1ec9nh \u00e2m l\u01b0\u1ee3ng VGT (Variable Gain Transconductance) \u0111\u01b0\u1ee3c \u0111\u00edch th\u00e2n Charles Hansen t\u1ef1 h\u00e0o c\u00f4ng b\u1ed1. C\u1ee5 th\u1ec3, \u1edf pre-ampli\/ampli th\u00f4ng th\u01b0\u1eddng, t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o s\u1ebd \u0111i qua chi\u1ebft \u00e1p \u0111\u1ec3 gi\u1ea3m m\u1ee9c t\u00edn hi\u1ec7u r\u1ed3i \u0111\u1ebfn m\u1ed9t m\u1ea1ch t\u0103ng \u00e1p kh\u00e1c v\u1edbi nh\u1eefng m\u1ee9c \u0111i\u1ec7n tr\u1edf c\u1ed1 \u0111\u1ecbnh. V\u1ea5n \u0111\u1ec1 ph\u00e1t sinh l\u00e0 khi \u1edf m\u1ee9c \u0111i\u1ec7n tr\u1edf cao, t\u1ea7n s\u1ed1 \u00e2m thanh v\u00e0 \u00e2m l\u01b0\u1ee3ng trong m\u1ed7i l\u1ea7n \u0111i\u1ec1u ch\u1ec9nh s\u1ebd kh\u00f4ng c\u00f2n ch\u00ednh x\u00e1c. H\u01a1n n\u1eefa, khi s\u1eed d\u1ee5ng \u0111i\u1ec7n tr\u1edf cho m\u1ea1ch chi\u1ebft \u00e1p, \u0111\u1ed9 trong s\u1ea1ch c\u1ee7a t\u00edn hi\u1ec7u l\u00e0 kh\u00f3 \u0111\u1ea3m b\u1ea3o. C\u00f4ng ngh\u1ec7 VGT kh\u00f4ng s\u1eed d\u1ee5ng m\u1ea1ch chi\u1ebft \u00e1p cho t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o, v\u00e0 thay v\u00ec nhi\u1ec1u m\u1ee9c \u0111i\u1ec7n tr\u1edf, Ayre s\u1eed d\u1ee5ng tr\u1ef1c ti\u1ebfp bi\u1ebfn tr\u1edf. K\u1ebft h\u1ee3p c\u00f9ng m\u1ea1ch EquiLock, \u1ed5n \u0111\u1ecbnh \u0111i\u1ec7n \u00e1p qua c\u00e1c tr\u1edf v\u00e0 transistor, Hansen t\u1ef1 tin kh\u1eb3ng \u0111\u1ecbnh &#8220;S\u1ebd c\u00f2n m\u1ea5t m\u1ed9t th\u1eddi gian n\u1eefa cho b\u1ea5t c\u1ee9 \u0111\u1ed1i th\u1ee7 n\u00e0o \u0111\u1ec3 b\u1eaft k\u1ecbp c\u00f4ng ngh\u1ec7 n\u00e0y&#8221;.<\/p>\n<p><strong>L\u1eafp \u0111\u1eb7t v\u00e0 th\u1eed nghi\u1ec7m<\/strong><\/p>\n<p>Khi v\u1eadn h\u00e0nh l\u1ea7n \u0111\u1ea7u ti\u00ean, KX-R s\u1ebd t\u1ef1 \u0111\u1ed9ng b\u01b0\u1edbc v\u00e0o ch\u1ebf \u0111\u1ed9 setup v\u1edbi nhi\u1ec1u l\u1ef1a ch\u1ecdn cho ng\u01b0\u1eddi d\u00f9ng t\u1eeb thi\u1ebft \u0111\u1eb7t c\u00e1c thi\u1ebft b\u1ecb k\u00e8m theo trong h\u1ec7 th\u1ed1ng nh\u01b0 CDP \u0111\u1ebfn ampli, loa&#8230; ho\u1eb7c c\u1ee5 th\u1ec3 h\u01a1n l\u00e0 nh\u1eefng model c\u1ee5 th\u1ec3 c\u1ee7a Ayre v\u00e0 m\u1ed9t s\u1ed1 h\u00e3ng hi-fi danh ti\u1ebfng kh\u00e1c. Ngo\u00e0i ra, ch\u1ebf \u0111\u1ed9 n\u00e0y c\u00f2n l\u00e0 n\u01a1i thi\u1ebft l\u1eadp t\u0103ng\/gi\u1ea3m offset, c\u00e2n b\u1eb1ng channel, v\u00e0 bypass, r\u1ea5t h\u1eefu \u00edch khi ph\u1ed1i gh\u00e9p v\u1edbi d\u00e0n loa v\u00f2m \u0111a k\u00eanh. T\u1eeb \u0111\u00e2y, ng\u01b0\u1eddi d\u00f9ng c\u00f2n c\u1ea7n k\u00edch ho\u1ea1t c\u1ed5ng input\/output mu\u1ed1n s\u1eed d\u1ee5ng. B\u1edfi theo nh\u00e0 s\u1ea3n xu\u1ea5t, vi\u1ec7c t\u00edn hi\u1ec7u \u0111i\u1ec7n \u1edf c\u00e1c ch\u00e2n c\u1eafm kh\u00f4ng c\u1ea7n thi\u1ebft r\u00f2 r\u1ec9, c\u1ed9ng v\u1edbi l\u1edbp khung nh\u00f4m, c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c c\u1ed5ng kh\u00e1c quan tr\u1ecdng h\u01a1n.<\/p>\n<div id=\"attachment_3831\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.hifivietnam.vn\/vi\/wp-content\/uploads\/2014\/06\/ayre_4.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3831\" class=\"wp-image-3831 size-full\" src=\"http:\/\/www.hifivietnam.vn\/vi\/wp-content\/uploads\/2014\/06\/ayre_4.jpg\" alt=\"ayre_4\" width=\"500\" height=\"333\" \/><\/a><p id=\"caption-attachment-3831\" class=\"wp-caption-text\">Remote \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf tinh x\u1ea3o v\u1edbi \u0111\u00e8n n\u1ec1n m\u00e0u xanh gi\u00fap d\u1ec5 d\u00e0ng \u0111i\u1ec1u khi\u1ec3n trong t\u1ed1i<\/p><\/div>\n<p>M\u1ed9t khi vi\u1ec7c thi\u1ebft \u0111\u1eb7t \u0111\u00e3 ho\u00e0n t\u1ea5t, hai n\u00fam \u0111i\u1ec1u khi\u1ec3n \u1edf m\u1eb7t tr\u01b0\u1edbc s\u1ea3n ph\u1ea9m s\u1ebd c\u00f3 c\u00f4ng d\u1ee5ng kh\u00e1c, m\u1ed9t \u0111\u1ec3 ch\u1ecdn ngu\u1ed3n v\u00e0o, m\u1ed9t \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh dung l\u01b0\u1ee3ng. Ri\u00eang n\u00fam th\u1ee9 hai ph\u00e1t t\u00edn hi\u1ec7u \u0111\u1ebfn b\u1ed9 x\u1eed l\u00fd trung t\u00e2m nh\u1edd m\u1ed9t \u0111\u1ea7u \u0111\u1ecdc quang h\u1ecdc, t\u0103ng t\u00ednh ch\u00ednh x\u00e1c c\u1ee7a vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n, ph\u00f9 h\u1ee3p v\u1edbi 61 m\u1ee9c dung l\u01b0\u1ee3ng t\u01b0\u01a1ng \u1ee9ng v\u1edbi kho\u1ea3ng c\u01b0\u1eddng \u0111\u1ed9 \u00e2m 61 dB.<\/p>\n<p>\u0110\u1ec3 th\u1eed nghi\u1ec7m c\u00f4ng ngh\u1ec7 VGT m\u1edbi, KX-R \u0111\u01b0\u1ee3c th\u1eed b\u1eb1ng m\u1ed9t v\u00e0i b\u1ea3n nh\u1ea1c \u0111\u1ea7u ti\u00ean c\u1ee7a CD While You Are Alive \u2013 Cantus. C\u00e1c b\u00e0i n\u00e0y \u0111\u1ec1u c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m chung l\u00e0 \u0111\u1ed9 t\u0129nh l\u1eb7ng, nh\u1eb9 nh\u00e0ng, \u0111\u00f4i khi ti\u1ebfng nh\u1ea1c v\u00e0 ti\u1ebfng d\u00e0n \u0111\u1ed3ng ca m\u1edbi \u0111\u01b0\u1ee3c c\u1ea5t l\u00ean x\u00f3a tan kh\u00f4ng gian t\u0129nh m\u1ecbch. V\u00ec v\u1eady, r\u1ea5t ph\u00f9 h\u1ee3p \u0111\u1ec3 th\u1eed \u0111\u1ed9 trong tr\u1ebbo c\u1ee7a \u00e2m thanh t\u1eeb KX-R qua c\u00e1c m\u1ee9c dung l\u01b0\u1ee3ng kh\u00e1c nhau. Tho\u1ea1t \u0111\u1ea7u, \u1edf m\u1ee9c th\u1ea5p, ch\u01b0a c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 r\u00e0ng gi\u1eefa s\u1ea3n ph\u1ea9m v\u00e0 nhi\u1ec1u \u0111\u1ed1i th\u1ee7 kh\u00e1c. Tuy nhi\u00ean, khi \u0111i\u1ec1u ch\u1ec9nh dung l\u01b0\u1ee3ng \u0111\u1ebfn m\u1ee9c trung b\u00ecnh v\u00e0 cao, nh\u1eefng kho\u1ea3ng l\u1eb7ng trong b\u00e0i h\u00e1t v\u1eabn ho\u00e0n to\u00e0n im \u1eafng, trong khi ti\u1ebfng h\u00e1t cao v\u00f3t kh\u00f4ng h\u1ec1 b\u1ecb m\u00e9o m\u00f3 v\u00e0 ti\u1ebfng nh\u1ea1c v\u1eabn du d\u01b0\u01a1ng \u0111\u00fang m\u1ef1c. Th\u1ef1c s\u1ef1 ph\u1ea3i \u1edf m\u1ee9c n\u00e0y, ng\u01b0\u1eddi nghe m\u1edbi th\u1ea5y \u0111\u01b0\u1ee3c c\u00f4ng phu c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t khi trau chu\u1ed1t t\u1eebng chi ti\u1ebft nh\u1ecf trong s\u1ea3n ph\u1ea9m.<\/p>\n<p><a href=\"http:\/\/www.hifivietnam.vn\/vi\/wp-content\/uploads\/2014\/06\/ayre_5.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3832\" src=\"http:\/\/www.hifivietnam.vn\/vi\/wp-content\/uploads\/2014\/06\/ayre_5.jpg\" alt=\"ayre_5\" width=\"500\" height=\"279\" \/><\/a><br \/>\nM\u1ed9t kh\u00eda c\u1ea1nh th\u1eed nghi\u1ec7m kh\u00e1c, \u0111\u1ed9 \u0111\u1ed9ng v\u00e0 ch\u1ea5t \u00e2m \u0111\u1eb7c tr\u01b0ng, KX-R \u0111\u01b0\u1ee3c th\u1eed s\u1ee9c v\u1edbi b\u1ea3n 9\/11 t\u1eeb CD John van der Veer&#8217;s The Ark. \u0110\u00e2y l\u00e0 b\u1ea3n nh\u1ea1c v\u1edbi ti\u1ebft t\u1ea5u kh\u00e1 nhanh v\u00e0 m\u1ea1nh nh\u1edd n\u0103m chi\u1ebfc guitar acoustics. D\u1ea3i \u00e2m tr\u1ea7m \u1edf \u0111\u00e2y kh\u00e1 gi\u1ed1ng v\u1edbi ti\u1ebfng bass \u0111i\u1ec7n t\u1eed th\u00f4ng th\u01b0\u1eddng, nh\u01b0ng v\u00ec l\u00e0 d\u00e2y \u0111\u00e0n guitar n\u00ean v\u1eabn chi ti\u1ebft, \u0111\u00f2i h\u1ecfi x\u1eed l\u00fd hi\u1ec7u qu\u1ea3, kh\u00f4ng th\u1ea5t tho\u00e1t t\u00edn hi\u1ec7u. KX-R cho th\u1ea5y kh\u1ea3 n\u0103ng xu\u1ea5t s\u1eafc c\u1ee7a m\u00ecnh khi tr\u00ecnh di\u1ec5n ti\u1ebfng d\u00e2y \u0111\u00e0n m\u1ea1nh m\u1ebd, m\u00e0 v\u1eabn \u0111\u1ea5y \u0111\u1ee7, tr\u00f2n v\u1eb9n. D\u1ea3i \u00e2m cao cho th\u1ea5y ch\u1ea5t \u00e2m kh\u00e1 \u0111\u1eb7c tr\u01b0ng c\u1ee7a Ayre, c\u00f3 xu h\u01b0\u1edbng trong tr\u1ebbo m\u1ed9t c\u00e1ch \u0111\u00e1ng ng\u1ea1c nhi\u00ean, d\u00f9 v\u1eabn r\u1ea5t ch\u00e2n th\u1ef1c, \u0111em l\u1ea1i c\u1ea3m gi\u00e1c nghe m\u1ed9t khi \u0111\u00e3 quen kh\u00f3 c\u00f3 th\u1ec3 t\u00e1ch r\u1eddi \u0111\u01b0\u1ee3c.<\/p>\n<p><strong>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt:<\/strong><\/p>\n<ul>\n<li>Ng\u00f5 v\u00e0o: 4 c\u1ed5ng RCA tr\u1edf kh\u00e1ng 1M ohm\/phase ;\u00a0 4 c\u1ed5ng XLR tr\u1edf kh\u00e1ng 2M ohm\/phase.<\/li>\n<li>Ng\u00f5 ra: 2 c\u1ed5ng RCA; 2 c\u1ed5ng XLR<\/li>\n<li>D\u1ea3i t\u1ea7n \u0111\u00e1p \u1ee9ng: \u00a0\u00a0 DC \u2013 250 kHz<\/li>\n<li>Gain: 61 m\u1ee9c, 61 dB<\/li>\n<li>K\u00edch th\u01b0\u1edbc: 438 x 95 x 29,2 mm<\/li>\n<li>Tr\u1ecdng l\u01b0\u1ee3ng: 18 kg<\/li>\n<\/ul>\n<p><em><strong>Nguy\u00ean Kh\u00e1nh<br \/>\nT\u1ed5ng h\u1ee3p theo Hifi+<\/strong><\/em><\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.hifivietnam.vn\/vi\/thu-vien-review\/kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic\/\">Hifivietnam.vn<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>HFVN &#8211; Trong v\u00f4 v\u00e0n c\u00e1i t\u00ean trong ng\u00e0nh c\u00f4ng nghi\u1ec7p hi-fi, hi\u1ebfm c\u00f3 m\u1ed9t h\u00e3ng s\u1ea3n xu\u1ea5t n\u00e0o \u0111\u1ea1t \u0111\u01b0\u1ee3c nhi\u1ec1u th\u00e0nh c\u00f4ng tr\u00ean m\u1ed7i s\u1ea3n ph\u1ea9m c\u1ee7a m\u00ecnh nh\u01b0 Ayre Acoustics. \u0110\u01b0\u1ee3c th\u00e0nh l\u1eadp b\u1edfi k\u1ef9 s\u01b0 \u00e2m thanh t\u00ean tu\u1ed5i Charles Hansen, c\u0169ng l\u00e0 cha \u0111\u1ebb c\u1ee7a th\u01b0\u01a1ng hi\u1ec7u loa danh ti\u1ebfng&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1224,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":[]},"categories":[12,15],"tags":[644],"class_list":["post-1223","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-danh-gia-review","category-tin-tuc","tag-ayre-acoustics","category-12","category-15","description-off"],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>KX-R: Thi\u1ebft k\u1ebf pre-amplifier \u0111\u1ea7u b\u1ea3ng c\u1ee7a Ayre Acoustic - SaigonStereo<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.saigonstereo.com\/home\/kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"KX-R: Thi\u1ebft k\u1ebf pre-amplifier \u0111\u1ea7u b\u1ea3ng c\u1ee7a Ayre Acoustic - SaigonStereo\" \/>\n<meta property=\"og:description\" content=\"HFVN &#8211; Trong v\u00f4 v\u00e0n c\u00e1i t\u00ean trong ng\u00e0nh c\u00f4ng nghi\u1ec7p hi-fi, hi\u1ebfm c\u00f3 m\u1ed9t h\u00e3ng s\u1ea3n xu\u1ea5t n\u00e0o \u0111\u1ea1t \u0111\u01b0\u1ee3c nhi\u1ec1u th\u00e0nh c\u00f4ng tr\u00ean m\u1ed7i s\u1ea3n ph\u1ea9m c\u1ee7a m\u00ecnh nh\u01b0 Ayre Acoustics. \u0110\u01b0\u1ee3c th\u00e0nh l\u1eadp b\u1edfi k\u1ef9 s\u01b0 \u00e2m thanh t\u00ean tu\u1ed5i Charles Hansen, c\u0169ng l\u00e0 cha \u0111\u1ebb c\u1ee7a th\u01b0\u01a1ng hi\u1ec7u loa danh ti\u1ebfng&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.saigonstereo.com\/home\/kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic\/\" \/>\n<meta property=\"og:site_name\" content=\"SaigonStereo\" \/>\n<meta property=\"article:published_time\" content=\"2014-07-03T09:34:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-07-17T04:34:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.saigonstereo.com\/home\/wp-content\/uploads\/2014\/07\/ayre_1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"334\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"SaigonStereo\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"SaigonStereo\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"11 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.saigonstereo.com\/home\/kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic\/\",\"url\":\"https:\/\/www.saigonstereo.com\/home\/kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic\/\",\"name\":\"KX-R: Thi\u1ebft k\u1ebf pre-amplifier \u0111\u1ea7u b\u1ea3ng c\u1ee7a Ayre Acoustic - SaigonStereo\",\"isPartOf\":{\"@id\":\"https:\/\/www.saigonstereo.com\/home\/#website\"},\"datePublished\":\"2014-07-03T09:34:44+00:00\",\"dateModified\":\"2015-07-17T04:34:16+00:00\",\"author\":{\"@id\":\"https:\/\/www.saigonstereo.com\/home\/#\/schema\/person\/6088f6fd9d78617d0f210169d02be990\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.saigonstereo.com\/home\/kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.saigonstereo.com\/home\/kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.saigonstereo.com\/home\/kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.saigonstereo.com\/home\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"KX-R: Thi\u1ebft k\u1ebf pre-amplifier \u0111\u1ea7u b\u1ea3ng c\u1ee7a Ayre Acoustic\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.saigonstereo.com\/home\/#website\",\"url\":\"https:\/\/www.saigonstereo.com\/home\/\",\"name\":\"SaigonStereo\",\"description\":\"Nh\u00e0 ph\u00e2n ph\u1ed1i thi\u1ebft b\u1ecb \u00e2m thanh cao c\u1ea5p\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.saigonstereo.com\/home\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"vi\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.saigonstereo.com\/home\/#\/schema\/person\/6088f6fd9d78617d0f210169d02be990\",\"name\":\"SaigonStereo\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.saigonstereo.com\/home\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/9887d9976b52651920c8abbb6d358cc8d91b93ca9b5d7787f3aee5ccad887531?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/9887d9976b52651920c8abbb6d358cc8d91b93ca9b5d7787f3aee5ccad887531?s=96&d=mm&r=g\",\"caption\":\"SaigonStereo\"},\"url\":\"https:\/\/www.saigonstereo.com\/home\/author\/admin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"KX-R: Thi\u1ebft k\u1ebf pre-amplifier \u0111\u1ea7u b\u1ea3ng c\u1ee7a Ayre Acoustic - SaigonStereo","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.saigonstereo.com\/home\/kx-r-thiet-ke-pre-amplifier-dau-bang-cua-ayre-acoustic\/","og_locale":"vi_VN","og_type":"article","og_title":"KX-R: Thi\u1ebft k\u1ebf pre-amplifier \u0111\u1ea7u b\u1ea3ng c\u1ee7a Ayre Acoustic - SaigonStereo","og_description":"HFVN &#8211; 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