{"product_id":"astro-ast-kt88mdxsu-kt88-mono-power-amplifier","title":"ASTOR AST-KT88MDXSU KT88 Mono Power Amplifier Set","description":"\u003cdiv class=\"post-shipping-info\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eIt will be a special sale for the current item. Only 100V specifications. There is no manufacturer warranty or repair because it is difficult to continue the brand, but we will add a six-year warranty at our shop.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"products-eyecatch\"\u003e\n\u003ch2\u003eSupports the power of the KT88 with a mirror stainless chassis.\u003c\/h2\u003e\n\u003ch3\u003eUL connection, self-bias, 21-point attenuatorASTORMono Power Amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"products-desc-title\"\u003eDescription\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\n\u003ch3\u003e\u003cstrong\u003eMono Power Amplifier with KT88\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAST-KT88MDXSUは、KT88をoutput tubeUsed forASTORThis is a mono power amplifier. The unit of sale is set to two units and is used in the mono configuration of left and right independent.\u003c\/p\u003e\n\u003cp\u003eThe vacuum tube used is KT88 × 2, 12AU7 × 1, 12AX7 × 1. The output stage adopts a KT88, and it is composed of UL connection, ease of handling by self-bias method, and a thick expression like a vacuum tube amplifier.\u003c\/p\u003e\n\u003cp\u003eOutput is 10W. This model aims to bring out the KT88's power feeling, sound thickness, and stable driving force carefully in a mono configuration instead of competing for high power.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0612\/9139\/7377\/files\/kt88m.jpg?v=1788254441\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eASTORUsing Original Transformer\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAST-90P, TOR-15PP, H-2437 are used for mounted transformers. Including power supply and output,ASTORIt is a structure with a sense of quantity.\u003c\/p\u003e\n\u003cp\u003eIn vacuum tube amplifiers, transformers are an important part of the sound skeleton, low range stability, and sound field prospects. This machine has a compact appearance, but it has a solid power supply and output part required as a mono amplifier.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eEquipped with 21-point click attenuator\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe input part is equipped with a 100 kΩ attenuator with a click-type 21 contact. The front panel knob allows you to adjust the input level step by step.\u003c\/p\u003e\n\u003cp\u003eIn addition to gain adjustment when combined with preamplifiers, it is also possible to combine with source equipment with output level depending on the system configuration. Because of the mono configuration of left and right independence, it is also characteristic that it can perform fine level adjustment.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e304 stainless steel mirror finish chassis\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe chassis is made of 304 stainless 1.2mm thick and has a mirror finish. It uses 304 stainless 1.2mm thickness on the part mounting middle plate, making it rigid not only on the appearance but also on the inner structural material.\u003c\/p\u003e\n\u003cp\u003eThe combination of the mirror surface stainless steel, the calm panel of the front, the black transcase, the classic vacuum tube amplifier,ASTORIt has a strong feeling.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBroadband design from 10Hz to 50kHz\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe frequency characteristic is 10Hz to 50kHz. It is designed as a KT88 mounted amplifier with room from low to high range.\u003c\/p\u003e\n\u003cp\u003eThe residual noise is 0.31% at 1W time of 1mV and the distortion rate is 0.31% at 1W. It is easy to handle even in combination with high-efficiency speakers, and the specification aims to carefully draw the contours and spatial expressions of music while maintaining a vacuum tube amplifier-like texture.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecial Sale of Current Items\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis machine isASTOROnly in stock is a special sale. Although there is no manufacturer warranty or repair service due to difficulty in continuing the brand in the future, we will provide a six-year warranty at our shop.\u003c\/p\u003e\n\u003cp\u003eMono configuration using KT88,ASTORIt is a rare vacuum tube power amplifier with original transformer, 304 stainless steel mirror surface chassis and 21 contact click attenuator.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"products-desc-title\"\u003eSpec\u003c\/div\u003e\n\u003ctable class=\"table-spec\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eType\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eAST-KT88MDXSU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eTypes and Standards\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eMono Power Amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eSales Unit\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eTwo set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eUse Transformer\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eAST-90P ×1、TOR-15PP ×1、H-2437 ×1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eUse Vacuum Tube\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eKT88 ×2、12AU7 ×1、12AX7 ×1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eFrequency Characteristics\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003e10Hz〜50kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eResidual noise\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003e1W at 1mV or less\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eDistortion\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eAt 1W: 0.31%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eInput Impedance\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eClick Type 21 Contact A Type 100kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eConnection Circuit Bias\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eUL connection\/self-bias type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eInput Terminal\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eINPUT ×1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eSpeaker Terminal\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003e0-8-16Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003ePOWER Output\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003e10W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eLoad Resistance\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003e8kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eSize\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eW240 × D405 × H170mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eWeight\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003e8 kg\/1 unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eChassis Steel\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003e304 stainless 1.2mm thick\/mirror finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eParts Mounting Sheet Steel\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003e304 stainless 1.2mm thickness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003ePower supply specifications\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003e100V Specifications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eWarranty\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd\u003eNo Manufacturer Warranty\/Six-year Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"products-desc-title\"\u003eReview\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\n\u003ch3\u003e\u003cstrong\u003eSound Quality Trends from Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe AST-KT88MDXSU is a power amplifier that aims to bring out the power and thickness of the KT88 in a mono configuration. By separating the left and right, interference in the power supply and output stage is suppressed, and the structure is also favorable in terms of sound image stability and channel separation.\u003c\/p\u003e\n\u003cp\u003eIt looks like a KT88 amplifier with a UL connection, and it can be expected to create a sound with a good balance that aims at smoothness in the tripolar tube connection and intermediate driving force in the five-pole tube connection. While emphasizing sound thickness, extrusion, and low-range stability, the expression that does not become too hard is attractive.\u003c\/p\u003e\n\u003cp\u003e304 stainless steel mirror surface with chassisASTORThe combination of original transformers not only contributes to the beauty of the appearance, but also the rigidity and stability of the enclosure. This model combines the presence of a vacuum tube amplifier with a solid sense of quantity.\u003c\/p\u003e\n\u003cp\u003eBecause of the 10W output, the combined speakers have high efficiency models and honest models with impedance characteristics. It is suitable for systems that emphasize sound color, density, lingering, vacuum tube amplifier texture rather than loud volume.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ASTOR\/アストロ電子企画","offers":[{"title":"Default Title","offer_id":50261166915841,"sku":"AST-KT88MDXSU","price":440000.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/9139\/7377\/files\/kt88-2.jpg?v=1788253448","url":"https:\/\/exclusive-audio.jp\/en\/products\/astro-electronics-planning-ast-kt88mvip-mono-power-amplifier-2","provider":"ExAUDIO","version":"1.0","type":"link"}