{"id":707,"date":"2022-06-01T10:13:00","date_gmt":"2022-06-01T10:13:00","guid":{"rendered":"https:\/\/knoblochstrings.com\/?p=707"},"modified":"2026-03-16T10:20:38","modified_gmt":"2026-03-16T10:20:38","slug":"string-rating-knobloch-erithacus-edb31-5-low-tension","status":"publish","type":"post","link":"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/","title":{"rendered":"String Rating: Knobloch Erithacus EDB31.5 Low Tension"},"content":{"rendered":"\n<p id=\"viewer-foo\">I tried the new strings released by Knobloch. This series, called \u201cErithacus\u201d, aims for a \u201cnatural sound\u201d and has a lineup of treble strings using a new material called bio-nylon. I bought and used these strings and found them to be unique and fun to play for the first time in a long time.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viewer-bi84e\"><strong>Erithacus, meaning the genus of robins.<\/strong><\/h2>\n\n\n\n<p id=\"viewer-bv3h\">The name of the series, \u201c<strong>Erithacus<\/strong>\u201c, refers to the bird genus European robin. I\u2019m not sure which bird it is, but from the picture it looks like a European robin (Erithacus rubecula).<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/edq-33-5.avif\" alt=\"\" class=\"wp-image-708\"\/><\/figure>\n\n\n\n<p id=\"viewer-3kavi\">This string was <a target=\"_blank\" href=\"https:\/\/classicguitar.cooksealphoto.com\/%e3%83%8e%e3%83%96%e3%83%ad%e3%83%83%e3%82%af%e3%81%8b%e3%82%89%e3%82%a2%e3%82%b5%e3%83%89%e5%85%84%e5%bc%9f%e3%83%a2%e3%83%87%e3%83%ab%e3%80%81%e3%83%90%e3%82%a4%e3%82%aa%e3%83%8a%e3%82%a4%e3%83%ad\/?fbclid=IwAR3LHSNRIOp6b9KlfW1h2ZhvC9N9o_gaMIfBcE8YQieK-jE2M2HoRYh6ijc\" rel=\"noreferrer noopener\">recently released by Knobloch along with the Asad Brothers Memorial model<\/a>. I have already purchased the Asad Brothers model and will be reviewing it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viewer-ee54s\"><strong>A model using bio-nylon exists<\/strong><\/h2>\n\n\n\n<p id=\"viewer-bii3e\">This series is characterized by the use of what is called <strong>ER Double Silver for the bass strings<\/strong>.<\/p>\n\n\n\n<p id=\"viewer-bdb4a\">It aims for a natural, round sound and is available with the following treble strings:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"350\" height=\"270\" src=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/edb-table.avif\" alt=\"\" class=\"wp-image-711\"\/><\/figure>\n\n\n\n<p id=\"viewer-c5iop\">Notable among these are <strong>the bio-nylon model<\/strong> that use plant-derived materials.<\/p>\n\n\n\n<p id=\"viewer-cill1\">The use of bio-nylon <strong>eliminates the \u201cplasticky\u201d sound<\/strong> found in nylon and carbon strings, and is said to provide a pure, natural, round sound.<\/p>\n\n\n\n<p id=\"viewer-79gb8\"><strong>I think this EDB model is the main one of the Elisacus series<\/strong> because the concept of bass string is also natural sound.<\/p>\n\n\n\n<p id=\"viewer-78n9l\">When it comes to bio-nylon, <a target=\"_blank\" href=\"https:\/\/classicguitar.cooksealphoto.com\/en\/string-rating-aquila-perla-normal-37c\/\" rel=\"noreferrer noopener\">Aquila\u2019s Perla<\/a> uses the same material.<\/p>\n\n\n\n<p id=\"viewer-76c0o\">There are only a limited number of sources for treble strings, so maybe the treble strings for the EDB models are supplied by Aquila.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viewer-2t6pq\"><strong>New product strings arriving in an incompleted state<\/strong><\/h2>\n\n\n\n<p id=\"viewer-5v8br\">I ordered the Erithacus bio-nylon model directly from Knobloch about right after it was released, but they hadn\u2019t made the package yet, so it came in this package:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"555\" src=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/adb-packaging.avif\" alt=\"\" class=\"wp-image-712\"\/><\/figure>\n\n\n\n<p id=\"viewer-3rfsj\">What a surprise, it had my name on it. By the way, the packaging was very careful and I was very satisfied with the product, except that it took a long time to arrive.<\/p>\n\n\n\n<p id=\"viewer-epaei\">Thus, there is no information on the back of the package, and here is an image what I borrowed from the Knobloch website.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"760\" src=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/edq-technical.avif\" alt=\"\" class=\"wp-image-714\"\/><\/figure>\n\n\n\n<p id=\"viewer-be7bv\">The emphasis is on the \u201c<strong>natural sound<\/strong>\u201d of both the bass and treble strings.<\/p>\n\n\n\n<p id=\"viewer-fhppc\">By the way, the model name is \u201cEDB31.5\u201d, and the \u201c31.5\u201d seems to indicate that the total tension is 31.5 kg (is the 31.4 in the image above a misprint or a value under development?).<\/p>\n\n\n\n<p id=\"viewer-ckpjg\">It sounds definitely low tension string.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"viewer-3sh8p\"><strong>Red markings on 2nd and 5th strings<\/strong><\/h3>\n\n\n\n<p id=\"viewer-arp6q\">The strings came in one airtight package with all six strings as shown below.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/Erithacus-EDB31-5-Low-Tension.webp\" alt=\"\" class=\"wp-image-710\" srcset=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/Erithacus-EDB31-5-Low-Tension.webp 640w, https:\/\/knoblochstrings.com\/wp-content\/uploads\/Erithacus-EDB31-5-Low-Tension-300x225.webp 300w, https:\/\/knoblochstrings.com\/wp-content\/uploads\/Erithacus-EDB31-5-Low-Tension-600x450.webp 600w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p id=\"viewer-3k40s\">In the case of the <a target=\"_blank\" href=\"https:\/\/classicguitar.cooksealphoto.com\/%e5%bc%a6%e3%81%ae%e6%84%9f%e6%83%b3-%e3%83%8e%e3%83%96%e3%83%ad%e3%83%83%e3%82%af-%e3%82%a2%e3%82%af%e3%83%86%e3%82%a3%e3%83%96%e3%82%b9%e3%83%80%e3%83%96%e3%83%ab%e3%82%b7%e3%83%ab%e3%83%90\/\" rel=\"noreferrer noopener\">Double Silver series<\/a>, the bass strings and treble strings were separated, so maybe they will be separated when the package is completed.<\/p>\n\n\n\n<p id=\"viewer-d0sq9\">Although there are six strings in one package, <strong>the ends of the second and fifth strings are marked in red, so there was no problem distinguishing the strings<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"555\" src=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/Double-Silver-series-2.avif\" alt=\"\" class=\"wp-image-715\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"555\" src=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/Double-Silverseries-3.avif\" alt=\"\" class=\"wp-image-716\"\/><\/figure>\n\n\n\n<p id=\"viewer-asm58\">The bass string is looped at the ends, including the metal wire.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"555\" src=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/Double-Silver-series-4.avif\" alt=\"\" class=\"wp-image-718\"\/><\/figure>\n\n\n\n<p id=\"viewer-2gqml\">I think it is common not to attach this loop part to the bridge, but if you leave it as it is, it won\u2019t go through the peg, so you need to cut it.<\/p>\n\n\n\n<p id=\"viewer-cer8i\">Knobloch may ask us to use this side for the bridge side so that you can easily stop the strings. I would like to ask the manufacturer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"viewer-2js2g\"><strong>Milky white, thick treble strings<\/strong><\/h3>\n\n\n\n<p id=\"viewer-f6dih\">The distinctive feature in terms of appearance are the treble strings, which are <strong>milky white rather than transparent<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"555\" src=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/Double-Silver-series-5.avif\" alt=\"\" class=\"wp-image-719\"\/><\/figure>\n\n\n\n<p id=\"viewer-5mkta\">This is a characteristic of strings made of bio-nylon, and <a target=\"_blank\" href=\"https:\/\/classicguitar.cooksealphoto.com\/en\/string-rating-aquila-perla-normal-37c\/\" rel=\"noreferrer noopener\">Aquila\u2019s Perla<\/a> was no different.<\/p>\n\n\n\n<p id=\"viewer-38pbc\">However, if you use all bio-nylon strings, you will not feel strange as following image.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"555\" src=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/Double-Silver-series-6.avif\" alt=\"\" class=\"wp-image-720\"\/><\/figure>\n\n\n\n<p id=\"viewer-e7b6r\">The treble strings are thicker in spite of the lower tension. This may be another characteristic of bio-nylon.<\/p>\n\n\n\n<p id=\"viewer-ciulk\">On the other hand, the bass strings are very fine and very supple because of the low tension.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viewer-7ok32\"><strong>Very fast stability on both treble and bass strings<\/strong><\/h2>\n\n\n\n<p id=\"viewer-52cec\">The first thing I felt when I strung the Erithacus on my guitar was that it <strong>stabilized very quickly<\/strong>.<\/p>\n\n\n\n<p id=\"viewer-firlc\">I put it up the night before, and the bass string is almost stable by noon the next day.<\/p>\n\n\n\n<p id=\"viewer-90mss\">The treble strings drop a bit in pitch as I play them, but they stabilize very quickly compared to the other strings.<\/p>\n\n\n\n<p id=\"viewer-5isa6\">The longer the strings are not stable, the longer you can\u2019t enjoy playing, so this is a great specification.<\/p>\n\n\n\n<p id=\"viewer-5ot03\">It may be said that it is <strong>suitable for actual battle<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viewer-aoinj\"><strong>Round, but not blurry sounding<\/strong><\/h2>\n\n\n\n<p id=\"viewer-elnau\">As for the sound, it is <strong>round and gentle<\/strong> as Knobloch says.<\/p>\n\n\n\n<p id=\"viewer-1nnmd\">However, <strong>the sound is not a blur, as is often the case with cheap strings<\/strong>.<\/p>\n\n\n\n<p id=\"viewer-sh58\">The core of the sound is solid, but the extra irritating sound is suppressed, and a natural sound seems to be achieved.<\/p>\n\n\n\n<p id=\"viewer-95j8v\">For this reason, there is no lack of momentum in the sound when playing or difficulty in producing a loud sound.<\/p>\n\n\n\n<p id=\"viewer-8n0lc\">If there\u2019s a drawback, it\u2019s <strong>a bit hard to make a \u201csexy\u201d sound<\/strong>.<\/p>\n\n\n\n<p id=\"viewer-3s6d6\">When used well, the \u201cplastic sound\u201d can lead to a sense of sexuality, so in a sense, it may be a sound that is right on target.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viewer-71qvk\"><strong>Tension is firmly low, easy to play with nails<\/strong><\/h2>\n\n\n\n<p id=\"viewer-avo4g\">The tension is solidly low, as it is called low tension.<\/p>\n\n\n\n<p id=\"viewer-4d1fb\">It is <strong>easy for the left hand to hold and the right hand to relax and play<\/strong>.<\/p>\n\n\n\n<p id=\"viewer-em4hp\">In case of low tension, treble strings tend to be thin, but Erithacus is rather thick thanks to bio-nylon.<\/p>\n\n\n\n<p id=\"viewer-5oc6p\">For this reason, I felt that <strong>it was very easy to play, because the nails are well tensioned<\/strong>.<\/p>\n\n\n\n<p id=\"viewer-bh1a6\">By the way, the tension above this one is EDB33.5, a model with a total tension of 33.5kg, but even here the tension seems to be low enough.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viewer-4m35a\"><strong>The first low-tension and unique strings in a long time<\/strong><\/h2>\n\n\n\n<p id=\"viewer-e4hhe\">To be honest, I\u2019ve been frustrated with my new strings lately, as I\u2019ve found them to be a bit uninteresting.<\/p>\n\n\n\n<p id=\"viewer-5hi0f\">However, <strong>the Erithacus is a string with a strong personality that has not been seen in a long time and is fun to play<\/strong>.<\/p>\n\n\n\n<p id=\"viewer-5gspi\">It\u2019s also very rare to find a low tension string in the lineup, and I think it\u2019s a string that people who are into it will really get into.<\/p>\n\n\n\n<p id=\"viewer-1gt3s\">The only drawback is that <strong>the availability of the product is quite limited in Japan<\/strong>.<\/p>\n\n\n\n<p id=\"viewer-agsnn\">Currently, Aura sells this medium tension version (EDB33.5) in Japan, but does not offer the low tension version.<\/p>\n\n\n\n<p id=\"viewer-45f17\">Strings by Mail doesn\u2019t have it at the time of this writing, and the only way to get it is to use <a target=\"_blank\" href=\"https:\/\/classicguitar.cooksealphoto.com\/%e3%83%8e%e3%83%96%e3%83%ad%e3%83%83%e3%82%af%e3%81%ae%e5%bc%a6%e3%82%92%e6%97%a5%e6%9c%ac%e3%81%8b%e3%82%89%e8%b2%b7%e3%81%86%e3%81%ab%e3%81%af%ef%bc%9f%e6%97%a5%e6%9c%ac%e3%81%ae%e3%82%b7%e3%83%a7\/\" rel=\"noreferrer noopener\">Knoblock direct sales<\/a>.<\/p>\n\n\n\n<p id=\"viewer-dbdis\">Personally, I thought it was a pretty interesting string, and I hope it gets more treatment in Japan.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I tried the new strings released by Knobloch. This series, called \u201cErithacus\u201d, aims for a \u201cnatural sound\u201d and has a lineup of treble strings using a new material called bio-nylon. &hellip;<\/p>\n","protected":false},"author":2,"featured_media":710,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[64],"tags":[],"class_list":["post-707","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-classical-guitar"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>String Rating: Knobloch Erithacus EDB31.5 Low Tension - Knobloch Strings<\/title>\n<meta name=\"description\" content=\"I tried the new strings released by Knobloch. This series, called \u201cErithacus\u201d, aims for a \u201cnatural sound\u201d and has a lineup of treble strings using a new\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"String Rating: Knobloch Erithacus EDB31.5 Low Tension - Knobloch Strings\" \/>\n<meta property=\"og:description\" content=\"I tried the new strings released by Knobloch. This series, called \u201cErithacus\u201d, aims for a \u201cnatural sound\u201d and has a lineup of treble strings using a new\" \/>\n<meta property=\"og:url\" content=\"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/\" \/>\n<meta property=\"og:site_name\" content=\"Knobloch Strings\" \/>\n<meta property=\"article:published_time\" content=\"2022-06-01T10:13:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-16T10:20:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/Erithacus-EDB31-5-Low-Tension.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"640\" \/>\n\t<meta property=\"og:image:height\" content=\"480\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"knoblochstrings\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"knoblochstrings\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/\"},\"author\":{\"name\":\"knoblochstrings\",\"@id\":\"https:\/\/knoblochstrings.com\/en\/#\/schema\/person\/ec0a1d5287d047ee24a8d9bb3e7ad727\"},\"headline\":\"String Rating: Knobloch Erithacus EDB31.5 Low Tension\",\"datePublished\":\"2022-06-01T10:13:00+00:00\",\"dateModified\":\"2026-03-16T10:20:38+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/\"},\"wordCount\":1128,\"publisher\":{\"@id\":\"https:\/\/knoblochstrings.com\/en\/#organization\"},\"image\":{\"@id\":\"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/Erithacus-EDB31-5-Low-Tension.webp\",\"articleSection\":[\"Classical guitar\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/\",\"url\":\"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/\",\"name\":\"String Rating: Knobloch Erithacus EDB31.5 Low Tension - Knobloch Strings\",\"isPartOf\":{\"@id\":\"https:\/\/knoblochstrings.com\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/knoblochstrings.com\/en\/blog\/string-rating-knobloch-erithacus-edb31-5-low-tension\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/knoblochstrings.com\/wp-content\/uploads\/Erithacus-EDB31-5-Low-Tension.webp\",\"datePublished\":\"2022-06-01T10:13:00+00:00\",\"dateModified\":\"2026-03-16T10:20:38+00:00\",\"description\":\"I tried the new strings released by Knobloch. 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