![](\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2021\/02\/51356ec8bec95a835d377fe8196a5c19.jpg\")
<\/figure>\nInput connectors are also located here: two pairs of unbalanced RCA and a pair of balanced XLR.\u00a0The amplifier received an input selector and an adjustable line output – also in balanced and unbalanced versions.\u00a0All this will allow the HPA V550 to be used as a preamplifier.<\/p>\n
There are three connectors on the front panel for connecting headphones: two outputs for a classic 6.3 mm jack and one balanced 4-pin XLR.\u00a0The circuit provides headphone protection against constant voltage and overload.<\/p>\n A motorized potentiometer Alps RK 27 is responsible for volume control in the HPA V550. Another component is responsible for balance.\u00a0The Violectric HPA V550 PRO version differs from the usual version in that here the volume control is implemented in a circuit of reed relays designed for 256 steps.<\/p>\n Both innovations at Violectric are called their best achievements in the field of analog balanced circuitry.\u00a0Both received externally indistinguishable cases with bezels made of 8mm aluminum.<\/p>\n The included remote control can be used to remotely control the HPA V550.\u00a0It will certainly come in handy when working as a pre-amplifier, and owners of long headphone cables will also find it useful.<\/p>\n In Germany, the Violectric HPA V550 will cost 2,400 euros, while the HPA V550 PRO will cost 3,000 euros.<\/p>\n [ratemypost]<\/p>\n","protected":false},"excerpt":{"rendered":" The German brand Violectric is owned by Lake People Electronic, known for its studio audio equipment.\u00a0So the Violectric\u00a0HPA V550\u00a0headphone amplifier\u00a0(it is also released in the\u00a0HPA V550 PRO\u00a0version\u00a0) received a lot of features from professional circuitry. First of all, this is the increased supply voltage: it allowed the HPA V550 to work with high-impedance headphone models.\u00a0The […] More<\/a><\/p>\n","protected":false},"author":10404,"featured_media":178553,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[642],"tags":[779],"class_list":{"0":"post-121158","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-hi-fi","8":"tag-news"},"acf":[],"aioseo_notices":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts\/121158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/users\/10404"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/comments?post=121158"}],"version-history":[{"count":0,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts\/121158\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/media\/178553"}],"wp:attachment":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/media?parent=121158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/categories?post=121158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/tags?post=121158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![](\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2021\/02\/840bfc8b44407c07d02d8ae7c279a01d.jpg\")
<\/figure>\n