{"id":123834,"date":"2020-08-01T16:34:45","date_gmt":"2020-08-01T15:34:45","guid":{"rendered":"https:\/\/www.techweekmag.com\/?p=123834"},"modified":"2023-10-18T07:25:54","modified_gmt":"2023-10-18T06:25:54","slug":"luxman-m-900u-review-yet-another-masterpiece","status":"publish","type":"post","link":"https:\/\/www.stereoindex.com\/tech\/hi-fi\/luxman-m-900u-review-yet-another-masterpiece\/","title":{"rendered":"Luxman M-900u : Yet another masterpiece"},"content":{"rendered":"

The Luxman M-900u stereo power amplifier is yet another masterpiece from Japanese engineers at Luxman.\u00a0The design of the model is made in the style of minimalism: clear and straight lines, an understandable control system and massive gradient supports that protect the device from unwanted vibration – this is what you may notice when you first look at the model.<\/p>\n

Aesthetically, the Luxman M-900u power amplifier is made in a laconic retro style.\u00a0The model boasts impressive power indicators, as well as the ability to work with any speaker system.<\/p>\n

\"p-lux-m900-01.jpg\"<\/p>\n

The Luxman M-900u amplifier has a massive 48 kg case with a front aluminum panel, in which two analog level indicators with original white LED backlight are built.\u00a0On the front there is a power \/ standby button with indication of operating modes, an input selection button with two LEDs, a backlight off button and an LED diode indicating the activation of the BTL bridge mode.\u00a0The amplifier chassis does not use a ground loop, which can introduce parasitic interference and noise.\u00a0The cabinet has excellent damping and is supported by gradient cast iron feet to effectively damp resonances and vibrations.<\/p>\n

The Luxman M-900u power supply is equipped with four 20,000 uF capacitors and a powerful transformer (1250 VA), the windings of which are made using rectangular wires.\u00a0A thick bus of purified oxygen-free copper OFC runs from the PSU to the output stages.\u00a0The unit develops a power of 150 watts per channel at 8 ohms, 2 x 300 watts at 4 ohms and can operate in BLT bridged mode, while delivering 600 watts (8 ohms).\u00a0Up to 12 W Luxman M-900u works in class A. The Luxman M-900u amplifier has a damping factor of 710 units and is not afraid of a drop in load impedance up to 1 Ohm.<\/p>\n

\"p-lux-m900-02.jpg\"<\/p>\n

The amplifier has one block for each channel with four parallel push-pull amplification circuits.\u00a0It uses Darlington circuits and ODNF (version 4.0) proprietary negative feedback technology, designed specifically for distortion suppression.\u00a0The chains use premium components.<\/p>\n

At the rear of the amplifier there are two inputs – balanced and unbalanced.\u00a0One of the connectors of each input can be used to connect the Luxman M-900u in monoblock (bridge) mode, to which the corresponding “slider” is used.\u00a0For balanced jacks, there is a phase inverting switch.\u00a0There is a system bus port and a grounding lug.\u00a0To connect the AC, the handpiece is equipped with two pairs of massive screw terminals.<\/p>\n

\"p-lux-m900-04.jpg\"<\/p>\n

Conclusion<\/h3>\n

The sound of the amplifier is characterized by openness, exceptional clarity, naturalness, rich natural highs and midrange, deep dense bass and a wide surround stage.\u00a0The model will be an excellent companion for pairing with the Luxman C-900u preamp.<\/p>\n","protected":false},"excerpt":{"rendered":"

The Luxman M-900u stereo power amplifier is yet another masterpiece from Japanese engineers at Luxman.\u00a0The design of the model is made in the style of minimalism: clear and straight lines, an understandable control system and massive gradient supports that protect the device from unwanted vibration – this is what you may notice when you first […] More<\/a><\/p>\n","protected":false},"author":10404,"featured_media":189894,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[642],"tags":[778],"class_list":{"0":"post-123834","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-hi-fi","8":"tag-reviews"},"acf":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts\/123834","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=123834"}],"version-history":[{"count":0,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts\/123834\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/media\/189894"}],"wp:attachment":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/media?parent=123834"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/categories?post=123834"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/tags?post=123834"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}