{"id":3167,"date":"2025-07-30T15:36:15","date_gmt":"2025-07-30T13:36:15","guid":{"rendered":"https:\/\/www.cyrilbouysse.com\/cbamp\/?p=3167"},"modified":"2025-07-30T16:20:36","modified_gmt":"2025-07-30T14:20:36","slug":"lomo-yp27","status":"publish","type":"post","link":"https:\/\/www.cyrilbouysse.com\/cbamp\/lomo-yp27\/","title":{"rendered":"Lomo YP-27 Dual Mic Tube Preamp"},"content":{"rendered":"
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\n\t\t\t\t\t\tLomo YP-27 Dual Mic Tube Preamp\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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- 2 separate Tube Preamps<\/span><\/p>\n

- 2x EF86 Philips NOS - 2x 6Z32P NOS - 2x 6N3P NOS<\/span><\/p>\n

- Lundahl output transformers<\/span><\/p>\n

- Gain & Tone (correction) controls<\/span><\/p>\n

- Mic \/ Line inputs<\/span><\/p>\n

- 48V Phantom Power<\/span><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>

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\u00a0 \u00a0 Le pr\u00e9ampli Lomo YP-27 date de l'\u00e9poque de la Russie sovi\u00e9tique. C'est un double pr\u00e9ampli avec chacun environ 75dB de gain. Il offre d'origine 2 entr\u00e9es sur transformateurs, mix\u00e9es vers une seule sortie.<\/span><\/p>\n

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\u00a0 \u00a0 Pour une utilisation plus pratique, j'ai reconstruit un deuxi\u00e8me circuit de sortie pour pouvoir b\u00e9n\u00e9ficier de 2 pr\u00e9amplis identiques et totalement ind\u00e9pendants.<\/span><\/p>\n

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\u00a0 \u00a0 The Lomo YP-27 preamp dates back to the Soviet era. It's a dual preamp, each with approximately 75dB of gain. It originally offered two transformer-based inputs, mixed to a single output.<\/span><\/em><\/p>\n

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\u00a0 \u00a0 For more practical use, I rebuilt a second output circuit to provide two identical and completely independent preamps.<\/span><\/em><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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\u00a0 \u00a0 J'ai utilis\u00e9 des condensateurs NOS d'\u00e9poque sovi\u00e9tique pour rester le plus authentique possible. Les lampes sont \u00e9galement des NOS sovi\u00e9tiques, mais il est int\u00e9ressant d'utiliser des EF86 (ici des Philips NOS) en place des originales pour plus de lin\u00e9arit\u00e9 et moins de bruit.<\/span><\/p>\n

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\u00a0 \u00a0 Les sorties sont sym\u00e9tris\u00e9es par transformateurs Lundahl.<\/span><\/p>\n

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\u00a0 \u00a0 Et petite coqueterie, il est possible de l'utiliser comme 2 pr\u00e9amplis totalement s\u00e9par\u00e9s, ou comme \u00e0 l'origine, de router les 2 pr\u00e9amplis vers une seule sortie.<\/span><\/p>\n

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\u00a0 \u00a0 I used Soviet-era NOS capacitors to maintain the most authentic quality possible. The tubes are also NOS Soviet ones, but it's a good idea to use EF86s (here, NOS Philips) instead of the originals for greater linearity and lower noise.<\/span><\/em><\/p>\n

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\u00a0 \u00a0 The outputs are balanced using Lundahl transformers.<\/span><\/em><\/p>\n

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\u00a0 \u00a0 As a little extra, this unit can be used as a 2 completely separate preamps or as originally, to route the 2 preamps to a single output.<\/span><\/em><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>

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Le r\u00e9sultat est un pr\u00e9amplificateur studio tr\u00e8s haut de gamme, avec une chaleur et une pr\u00e9sence exceptionnelles.<\/span><\/p>\n

C'est un double pr\u00e9ampli avec une vraie personnalit\u00e9, beaucoup de gain et une patate incroyable.<\/span><\/p>\n

The result is a very high-end studio preamplifier with exceptional warmth and presence.<\/span><\/em><\/p>\n

It's a dual preamp with real personality, plenty of gain, and incredible punch.<\/span><\/em><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>

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

  – 2 separate Tube Preamps – 2x EF86 Philips NOS – 2x 6Z32P NOS – 2x 6N3P NOS – Lundahl output transformers – Gain & Tone (correction) controls – Mic \/ Line inputs – 48V Phantom Power   \u00a0 \u00a0 Le pr\u00e9ampli Lomo YP-27 date de l’\u00e9poque de la Russie sovi\u00e9tique. C’est un double […]<\/p>\n","protected":false},"author":1,"featured_media":3174,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-3167","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\/3167","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=3167"}],"version-history":[{"count":25,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/posts\/3167\/revisions"}],"predecessor-version":[{"id":3200,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/posts\/3167\/revisions\/3200"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/media\/3174"}],"wp:attachment":[{"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/media?parent=3167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/categories?post=3167"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cyrilbouysse.com\/cbamp\/wp-json\/wp\/v2\/tags?post=3167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}