{"id":3205,"date":"2025-09-09T22:00:26","date_gmt":"2025-09-09T20:00:26","guid":{"rendered":"https:\/\/www.cyrilbouysse.com\/cbamp\/?p=3205"},"modified":"2025-09-09T22:03:47","modified_gmt":"2025-09-09T20:03:47","slug":"marantz-cd4000-philips-cd723","status":"publish","type":"post","link":"https:\/\/www.cyrilbouysse.com\/cbamp\/marantz-cd4000-philips-cd723\/","title":{"rendered":"Marantz CD4000 \/ Philips CD723 – CB Amped !"},"content":{"rendered":"
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\n\t\t\t\t\t\tMarantz CD4000 \/ Philips CD723 - CB Amped !\t\t\t\t\t\t<\/h2>\n\t\t\t\t\t\t\t\t\t\t\t
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<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n<\/div><\/div><\/div>
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Le lecteur CD 723 de Philips, d\u00e9clin\u00e9 sous la r\u00e9f\u00e9rence CD4000 par Marantz, est rentr\u00e9 dans la l\u00e9gende pour ses grandes qualit\u00e9s audio et un prix abordable (moins de 140\u20ac \u00e0 sa sortie). Il mettait \u00e0 l\u2019amende des platines beaucoup plus ch\u00e8res, et avait l\u2019avantage de pouvoir \u00eatre encore am\u00e9lior\u00e9 gr\u00e2ce \u00e0 quelques am\u00e9liorations.<\/span><\/p>\n

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The Philips 723 CD player, released by Marantz as the CD4000, has become legendary for its high audio quality and affordable price (under \u20ac140 at its release). It outperformed much more expensive players, and could also to be improved with a few upgrades.<\/em><\/span><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

\n
\n\t\t\"CD4000\n\t<\/div>\n\n<\/div><\/div><\/div><\/div>
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Vers 2003, un ami m\u2019a demand\u00e9 si je pouvais en modifier un pour voir si l\u2019agitation qui r\u00e9gnait autour de ce lecteur \u00e9tait l\u00e9gitime. Nous nous sommes donc plong\u00e9s dans les divers tweaks et modifications plus ou moins \u00e9sot\u00e9riques pour en garder quelques unes.<\/span><\/p>\n

 <\/p>\n

Around 2003, a friend asked me if I could modify one to see if the fuss surrounding this player was legitimate. So we dove into various tweaks and more or less esoteric modifications to choose a few ones.<\/em><\/span><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>

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\n\t\t\"CD4000\n\t<\/div>\n\n<\/div><\/div><\/div>
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 <\/p>\n

Liste des modifications\u00a0:<\/span><\/span><\/p>\n

\u00a0 \u00a0- Remplacement de l\u2019amplificateur op\u00e9rationnel par un mod\u00e8le discret Audio Gd Moon<\/span>
\n\u00a0 \u00a0- Condensateurs de sortie PIO K40Y<\/span>
\n\u00a0 \u00a0- Remplacement de l\u2019horloge par un mod\u00e8le Audio Gd<\/span>
\n\u00a0 \u00a0- 3 alimentations s\u00e9par\u00e9es surdimensionn\u00e9es : AOP \u2013 horloge \u2013 m\u00e9canique<\/span>
\n\u00a0 \u00a0- D\u00e9couplage de la masse par self<\/span>
\n\u00a0 \u00a0- Filtre secteur<\/span>
\n\u00a0 \u00a0- Interrupteur ON-OFF<\/span>
\n\u00a0 \u00a0- Alourdissement de la platine par des plaques bitum\u00e9es pour r\u00e9duire les vibrations<\/span><\/p>\n

 <\/p>\n

List of modifications:<\/em><\/span>
\n\u00a0 \u00a0- Replaced the operational amplifier with a discrete Audio Gd Moon model<\/em><\/span>
\n\u00a0 \u00a0- K40Y PIO output capacitors<\/em><\/span>
\n\u00a0 \u00a0- Replaced the clock with an Audio Gd model<\/em><\/span>
\n\u00a0 \u00a0- 3 separate oversized power supplies: OPA \u2013 clock \u2013 CD mechanism<\/em><\/span>
\n\u00a0 \u00a0- Ground decoupling via a choke<\/em><\/span>
\n\u00a0 \u00a0- Mains filter<\/em><\/span>
\n\u00a0 \u00a0- ON-OFF switch<\/em><\/span>
\n\u00a0 \u00a0- Weighted the board with bitumen plates to reduce vibrations<\/em><\/span><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>

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Nous avons \u00e9t\u00e9 les premiers bluff\u00e9s par le r\u00e9sultat obtenu. Dynamique, d\u00e9tails, sc\u00e8ne sonore, confort d\u2019\u00e9coute, tout est magnifi\u00e9. La musique est vivante et organique. Depuis, nous l\u2019avons \u00e9cout\u00e9e \u00e0 c\u00f4t\u00e9 de lecteurs audiophiles jusqu\u2019\u00e0 3000 ou 5000\u20ac, et l\u00e0 encore nous avons \u00e9t\u00e9 les premiers surpris par son excellence.<\/span><\/p>\n

J\u2019ai fabriqu\u00e9 uniquement 2 mod\u00e8les, un pour chacun d\u2019entre nous. Et malgr\u00e9 une propension \u00e0 changer r\u00e9guli\u00e8rement de mat\u00e9riel, aucun d\u2019entre nous n\u2019a trouv\u00e9 \u00e0 la remplacer.<\/span><\/p>\n

 <\/p>\n

We were the first to be amazed by the result. Dynamics, details, soundstage, listening comfort\u2014everything is magnified. The music is alive and organic. Since then, we've listened to it alongside audiophile players costing up to \u20ac3,000 or \u20ac5,000, and once again, we were the first to be surprised by its excellence.<\/em><\/span><\/p>\n

I only made two models, one for each of us. And despite a tendency to regularly change equipment, none of us has found a replacement.<\/em><\/span><\/p>\n

 <\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>

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\n\t\t\"CD4000\n\t<\/div>\n\n<\/div><\/div><\/div>
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\n\t\t\"CD4000\n\t<\/div>\n\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

Le lecteur CD 723 de Philips, d\u00e9clin\u00e9 sous la r\u00e9f\u00e9rence CD4000 par Marantz, est rentr\u00e9 dans la l\u00e9gende pour ses grandes qualit\u00e9s audio et un prix abordable (moins de 140\u20ac \u00e0 sa sortie). Il mettait \u00e0 l\u2019amende des platines beaucoup plus ch\u00e8res, et avait l\u2019avantage de pouvoir \u00eatre encore am\u00e9lior\u00e9 gr\u00e2ce \u00e0 quelques am\u00e9liorations.   […]<\/p>\n","protected":false},"author":1,"featured_media":3225,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-3205","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hifi-studio"],"_links":{"self":[{"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/posts\/3205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/comments?post=3205"}],"version-history":[{"count":34,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/posts\/3205\/revisions"}],"predecessor-version":[{"id":3246,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/posts\/3205\/revisions\/3246"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/media\/3225"}],"wp:attachment":[{"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/media?parent=3205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/categories?post=3205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/tags?post=3205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}