{"product_id":"tung-sol-kt170","title":"Tung-Sol KT170","description":"\u003ch1 data-block-id=\"block-df8a3946-9e81-46b5-92a7-d594d8555cfc\" data-collapsable-block=\"true\" data-collapse-state=\"expanded\" class=\"ql-heading\"\u003eTung-Sol KT170 Power Tube\u003c\/h1\u003e\n\u003ch3 data-block-id=\"block-7a8195d6-451b-4e67-95ca-88eec1773dfa\" data-collapsable-block=\"true\" data-collapse-state=\"expanded\" class=\"ql-heading\"\u003eA high-dissipation octal beam tetrode with 85 W maximum plate dissipation, a 6.3 V heater, and the size and current capability required for serious high-output tube amplifiers\u003c\/h3\u003e\n\u003cp\u003eThe Tung-Sol KT170 is the biggest bottle in the modern Tung-Sol beam-tetrode family, built for amplifiers that need more than a conventional KT88-class output tube can comfortably deliver. If your amplifier was designed around the KT170, this is the tube you reach for when the brief is simple: more power handling, more reserve, and more ease under load.\u003c\/p\u003e\n\u003cp\u003eLike the KT150, the KT170 uses an octal base and a large glass envelope, but it steps up to an 85 W maximum plate dissipation rating. That higher dissipation ceiling is what makes the KT170 matter in real-world amplifier design. It gives engineers more thermal margin and more headroom to build high-output tube amplifiers without pushing the tube as hard at the edge of its envelope.\u003c\/p\u003e\n\u003cp\u003eThis is not a drop-in replacement for just any amp. The KT170's physical size, 6.3 V heater requirement, and roughly 1.75–2 A heater current draw mean amplifier compatibility needs to be confirmed first. But in an amp designed to use it, the KT170 is exactly the kind of output tube that makes sense in a serious high-power valve rig. Call us if you want to be sure your amplifier is ready.\u003c\/p\u003e\n\u003ch4 data-block-id=\"block-997dd2de-619e-4f10-b180-508e34cf5d8f\" data-collapsable-block=\"true\" data-collapse-state=\"expanded\" class=\"ql-heading\"\u003eBuilt for Big Output Stages\u003c\/h4\u003e\n\u003cp\u003eThe KT170 is a beam tetrode intended for low-frequency amplification in hi-fi output stages. In plain English, this is a purpose-built output tube for amplifiers that are expected to produce substantial power while still behaving like a proper tube amplifier should: stable, controlled, and unflustered when the music gets demanding.\u003c\/p\u003e\n\u003ch4 data-block-id=\"block-6cae092d-3e8c-4e86-be93-268242542700\" data-collapsable-block=\"true\" data-collapse-state=\"expanded\" class=\"ql-heading\"\u003eHigh Plate Dissipation\u003c\/h4\u003e\n\u003cp\u003eThe headline spec here is the 85 W maximum plate dissipation rating. That is the key differentiator, and it is the reason the KT170 exists. More plate dissipation gives an amplifier designer more room to work with, which can translate into greater output capability and less sense of strain in amps engineered to exploit it properly.\u003c\/p\u003e\n\u003ch4 data-block-id=\"block-ecf3bad5-e01c-4a87-98bd-2ec8bc59195b\" data-collapsable-block=\"true\" data-collapse-state=\"expanded\" class=\"ql-heading\"\u003eLarge-Bottle Tung-Sol Design\u003c\/h4\u003e\n\u003cp\u003eThe KT170 uses a distinctive original-shaped glass bulb and octal base, with a maximum diameter of 68 mm and overall height of 150 mm. That larger envelope is part of what allows the tube to operate in these higher-power applications, but it also means chassis clearance matters. Before ordering, make sure your amplifier has the physical room and heater supply capacity to run KT170s correctly.\u003c\/p\u003e\n\u003ch3 data-block-id=\"block-ebc2eaa1-3d2c-4c26-adf9-9cab26968040\" data-collapsable-block=\"true\" data-collapse-state=\"expanded\" class=\"ql-heading\"\u003eFeatures\u003c\/h3\u003e\n\u003cul class=\"ql-rendered-list-container\" data-test=\"rendered-list-container\" data-is-root=\"true\"\u003e\n\u003cli data-test=\"rendered-list-item-bullet\" data-block-id=\"block-85ade0a6-f513-4a8d-9666-c2b769e93939\" class=\"ql-rendered-bullet-list\"\u003eTung-Sol KT170 beam tetrode power tube\u003c\/li\u003e\n\u003cli data-test=\"rendered-list-item-bullet\" data-block-id=\"block-b3264bf3-86c6-48e9-83f1-c22ba7a42afb\" class=\"ql-rendered-bullet-list\"\u003eDesigned for hi-fi audio output-stage applications\u003c\/li\u003e\n\u003cli data-test=\"rendered-list-item-bullet\" data-block-id=\"block-8aa12f29-4081-4a37-b72f-991fc5610a6f\" class=\"ql-rendered-bullet-list\"\u003e85 W maximum plate dissipation\u003c\/li\u003e\n\u003cli data-test=\"rendered-list-item-bullet\" data-block-id=\"block-53bf8c88-93aa-431b-8fad-3485d66e501a\" class=\"ql-rendered-bullet-list\"\u003e6.3 V heater requirement\u003c\/li\u003e\n\u003cli data-test=\"rendered-list-item-bullet\" data-block-id=\"block-22aaacdf-9abf-43d3-95a6-aed2d5d6d62f\" class=\"ql-rendered-bullet-list\"\u003eApproximately 1.75–2 A heater current draw\u003c\/li\u003e\n\u003cli data-test=\"rendered-list-item-bullet\" data-block-id=\"block-8ff7d713-b0a3-438a-a50b-5b65156d2b7c\" class=\"ql-rendered-bullet-list\"\u003eOctal base for use in compatible tube amplifiers\u003c\/li\u003e\n\u003cli data-test=\"rendered-list-item-bullet\" data-block-id=\"block-77f64e9a-6f55-4d22-a26a-ea9ff02de3e7\" class=\"ql-rendered-bullet-list\"\u003eLarge original-shaped glass bulb for high-power operation\u003c\/li\u003e\n\u003cli data-test=\"rendered-list-item-bullet\" data-block-id=\"block-ebd408a5-2fad-4c97-95ce-a582d48a7a13\" class=\"ql-rendered-bullet-list\"\u003eBest suited to amplifiers specifically designed around KT170 electrical and physical requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-block-id=\"block-5d4d4c3d-93a6-4ccd-a53d-bd26fa253f95\" data-collapsable-block=\"true\" data-collapse-state=\"expanded\" class=\"ql-heading\"\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTube Type:\u003c\/strong\u003e Beam Tetrode\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBase:\u003c\/strong\u003e Octal\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum Plate Dissipation:\u003c\/strong\u003e 85 W\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHeater Voltage:\u003c\/strong\u003e 6.3 V\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHeater Current:\u003c\/strong\u003e 1.75–2 A\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum Diameter:\u003c\/strong\u003e 2.7\" (68 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOverall Height:\u003c\/strong\u003e 5.9\" (150 mm)\u003c\/p\u003e","brand":"Tung-Sol","offers":[{"title":"No Cryo \/ Audio Research Matched","offer_id":53600241516728,"sku":"TS-KT170-ARC","price":159.95,"currency_code":"USD","in_stock":true},{"title":"Yes Cryo \/ Audio Research Matched","offer_id":53600241549496,"sku":"TS-KT170-ARC-C","price":167.95,"currency_code":"USD","in_stock":true},{"title":"No Cryo \/ Platinum Grade","offer_id":53600241582264,"sku":"TS-KT170-P","price":149.95,"currency_code":"USD","in_stock":true},{"title":"Yes Cryo \/ Platinum Grade","offer_id":53600241615032,"sku":"TS-KT170-P-C","price":157.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/ts-KT170-2.png?v=1782317261","url":"https:\/\/upscaleaudio.com\/products\/tung-sol-kt170","provider":"Upscale Audio","version":"1.0","type":"link"}