{"product_id":"the-vacuum-valve-t9","title":"The Vacuum Valve T9 | 100W-per-Channel Tube Amplifier with USB DAC","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003e\u003cstrong\u003eDigital audio solved accuracy. It never solved warmth.\u003c\/strong\u003e That is what a vacuum tube does to a signal: the 6K4 tubes in the T9 soften the hard edges that digital conversion leaves behind and hand back a sound that is warmer and sweeter than the source had any right to be. It is a deliberate colouration, and once you have heard it, you know why the format survived the transistor.\u003c\/p\u003e\n\u003cp\u003eUnderneath the glow is real power. A TPA3221 amplifier stage delivers 100W per channel into a 4 ohm load, which is enough to drive any passive speaker between 3 and 8 ohms without apology, and a dedicated low frequency output lets you add an active subwoofer for a 2.1 system. The digital path is built from an AC6926C, CM6542, MS8412 and NE5532 chain, so the T9 works as a DAC and an amplifier in one box rather than forcing a stack of separates onto your desk. Bluetooth 5.0, USB, coaxial, optical and stereo RCA cover phones, computers, televisions and CD players, and the sampling ceilings are 24-bit 96 kHz over USB, 24-bit 192 kHz over optical and coaxial, and 24-bit 48 kHz over Bluetooth.\u003c\/p\u003e\n\u003cp\u003eThe measurement side is not an embarrassment either. Total harmonic distortion sits at 0.07%, signal to noise ratio is 98 dB or better, and frequency response runs 20 Hz to 20 kHz within plus or minus 1 dB, with treble and bass adjustable by 6 dB in either direction. Two analogue VU meters dance in warm light across the front of a 115 x 98 x 54 mm aluminium case, and the tubes themselves can be rolled: 6J1, 6J2, GE5654, 6J3, 6J4, 6J5 and 6AK5 are all compatible, which turns the amplifier into a long-term experiment.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eData can be perfect and still sound cold. The tubes are the correction.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin:24px 0;border:0;border-top:1px solid #eee;\"\u003e\n\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e✦ 100W per channel into 4 ohms from a TPA3221 amplifier stage\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e✦ Replaceable 6K4 vacuum tubes, compatible with 6J1, 6J2, GE5654, 6J3, 6J4, 6J5 and 6AK5\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e✦ Integrated 24-bit DAC with AC6926C, CM6542, MS8412 and NE5532 chips\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e✦ Bluetooth 5.0, USB, coaxial, optical and stereo RCA inputs\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e✦ Sampling up to 24-bit 192 kHz over optical and coaxial\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e✦ Drives passive speakers from 3 to 8 ohms with no matching drama\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e✦ Low frequency output for a 2.1 system with an active subwoofer\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e✦ Analogue VU meters and independent treble and bass controls\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e✦ Compact aluminium chassis at 115 x 98 x 54 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Tube T9\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eAmplifier IC:\u003c\/strong\u003e TPA3221\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eOutput power:\u003c\/strong\u003e 100W x 2 into a 4 ohm load\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eSupported speaker impedance:\u003c\/strong\u003e 3 to 8 ohms\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eTubes:\u003c\/strong\u003e 6K4 or 5725, 2 pieces\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eReplaceable tube types:\u003c\/strong\u003e 6J1, 6J2, GE5654, 6J3, 6J4, 6J5, 6Zh1p, 6AK5\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eChipset:\u003c\/strong\u003e 6K4, AC6926C, CM6542, MS8412, NE5532\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e Bluetooth 5.0, USB, coaxial, optical, stereo RCA\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eBluetooth sampling rate:\u003c\/strong\u003e 24-bit 48 kHz\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eUSB sampling rate:\u003c\/strong\u003e 24-bit 96 kHz\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eOptical and coaxial sampling rate:\u003c\/strong\u003e 24-bit 192 kHz\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eSupported formats:\u003c\/strong\u003e MP3, WMA, APE, FLAC, WAV\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eTotal harmonic distortion:\u003c\/strong\u003e 0.07%\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eSignal to noise ratio:\u003c\/strong\u003e 98 dB or better\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eFrequency response:\u003c\/strong\u003e 20 Hz to 20 kHz, plus or minus 1 dB\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eTreble and bass adjustment:\u003c\/strong\u003e Plus or minus 6 dB\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eOutput mode:\u003c\/strong\u003e Passive speakers, active subwoofer\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003ePower supply:\u003c\/strong\u003e DC 18 to 30V\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 115 x 98 x 54 mm\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CE, FCC, RoHS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-applications\" style=\"margin-top:24px;\"\u003e\n\u003ch3\u003eWhere It Belongs\u003c\/h3\u003e\n\u003cp\u003eThe T9 belongs on a desk, a shelf or a small hi-fi rack where one compact box has to do the work of three. Fed by a phone over Bluetooth it is the warm half of a nearfield setup with a pair of bookshelf speakers; fed by USB from a computer it is a DAC and amplifier in one, which removes a cable and a power supply from the desk; fed by optical from a television it doubles as the audio backbone of a living room, with the low frequency output adding a subwoofer when the room asks for one. Audiophiles who swap tubes the way other people swap headphones will find seven compatible types to experiment with, and anyone who simply wants analogue meters moving in warm light gets that too, without giving up modern inputs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-promise\" style=\"margin-top:30px;padding:18px 20px;border:1px solid #e6e6e6;border-radius:8px;background:#fafafa;\"\u003e\n\u003ch3 style=\"margin-top:0;\"\u003eThe EastSupplier Promise\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e✦ Vetted supply. Every unit is inspected at our consolidation warehouse before it ships.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e✦ Tracked delivery. You receive a live tracking number, not a vague estimate.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003e✦ Human support. A real person answers within one business day, before and after the sale.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-faq\" style=\"margin-top:30px;\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can it drive my speakers directly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, if they are passive and between 3 and 8 ohms. The amplifier delivers 100W per channel into 4 ohms, which covers the majority of bookshelf and small floorstanding speakers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between the three versions?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The versions differ by power plug and accessory bundle. With EU plug and US plug variants include the appropriate mains lead, and the only-unit option is for buyers who already have a supply.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use it with a subwoofer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. There is a dedicated low frequency output, so a 2.1 configuration with an active subwoofer is straightforward and the bass extension improves markedly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do the tubes need replacing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: They are consumable and replaceable. This amplifier accepts 6K4 or 5725 as standard and can also run 6J1, 6J2, GE5654, 6J3, 6J4, 6J5 and 6AK5, so tube rolling is part of the design, not a workaround.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it work with headphones?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This model is built around speaker and subwoofer output rather than a headphone stage. For private listening, feed a separate headphone amplifier from the RCA output of your source.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What power supply does it need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: A DC 18 to 30V supply. Use one with adequate current headroom rather than a marginal laptop brick, and the amplifier will stay clean when the bass asks for current.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will it sound different from a normal amplifier?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, and that is the point. Solid state amplifiers aim for neutrality; the vacuum tube stage adds even-order harmonic character, which most listeners describe as warm and sweet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sa225d1ccaa344d2183dd1aa2152f3780Y.webp?v=1771635957\" alt=\"product image\" style=\"display:block;margin:0 auto 18px auto;width:100%;max-width:620px;height:auto;border-radius:6px;\" loading=\"lazy\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S1b8bacacd85445978fa9ff8801d00e5bU.webp?v=1771635957\" alt=\"product image\" style=\"display:block;margin:0 auto 18px auto;width:100%;max-width:620px;height:auto;border-radius:6px;\" loading=\"lazy\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S37f65325d7854593a03731412906c435k.webp?v=1771635957\" alt=\"product image\" style=\"display:block;margin:0 auto 18px auto;width:100%;max-width:620px;height:auto;border-radius:6px;\" loading=\"lazy\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S81054270bc1c4c8e8e4534038a10aea0u.webp?v=1771635957\" alt=\"product image\" style=\"display:block;margin:0 auto 18px auto;width:100%;max-width:620px;height:auto;border-radius:6px;\" loading=\"lazy\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S6a01473bc74c4feeb8ae6825c36d2f4eP.webp?v=1771635957\" alt=\"product image\" style=\"display:block;margin:0 auto 18px auto;width:100%;max-width:620px;height:auto;border-radius:6px;\" loading=\"lazy\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S831896f371624d009b5c7f991d748e14Z.webp?v=1771635956\" alt=\"product image\" style=\"display:block;margin:0 auto 18px auto;width:100%;max-width:620px;height:auto;border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"The Vacuum Valve T9 | 100W-per-Channel Tube Amplifier with USB DAC\",\n  \"description\": \"Compact vacuum tube amplifier delivering 100W per channel into 4 ohms, with a 24-bit DAC, Bluetooth 5.0, USB, coaxial, optical and RCA inputs and analogue VU meters.\",\n  \"sku\": \"1005003323738012-T9 with EU Plug-China Mainland\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"AIYIMA\"},\n  \"category\": \"Home Audio\",\n  \"image\": [\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sa225d1ccaa344d2183dd1aa2152f3780Y.webp?v=1771635957\"],\n  \"url\": \"https:\/\/eastsupplier.com\/products\/the-vacuum-valve-t9\",\n  \"offers\": {\n    \"@type\": \"AggregateOffer\",\n    \"priceCurrency\": \"USD\",\n    \"lowPrice\": \"210.11\",\n    \"highPrice\": \"246.67\",\n    \"offerCount\": \"3\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"priceValidUntil\": \"2027-09-25\",\n    \"url\": \"https:\/\/eastsupplier.com\/products\/the-vacuum-valve-t9\",\n    \"seller\": {\"@type\": \"Organization\", \"name\": \"EastSupplier\", \"url\": \"https:\/\/eastsupplier.com\"}\n  },\n  \"aggregateRating\": {\n    \"@type\": \"AggregateRating\",\n    \"ratingValue\": \"4.8\",\n    \"bestRating\": \"5\",\n    \"worstRating\": \"1\",\n    \"reviewCount\": \"4\"\n  }\n}\n\u003c\/script\u003e","brand":"East Supplier Platform","offers":[{"title":"T9 with EU Plug \/ China Mainland","offer_id":48464634970335,"sku":"1005003323738012-T9 with EU Plug-China Mainland","price":246.67,"currency_code":"USD","in_stock":true},{"title":"Only T9 \/ China Mainland","offer_id":48464635003103,"sku":"1005003323738012-Only T9-China Mainland","price":210.11,"currency_code":"USD","in_stock":true},{"title":"T9 with US Plug \/ China Mainland","offer_id":48464635068639,"sku":"1005003323738012-T9 with US Plug-China Mainland","price":246.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sa225d1ccaa344d2183dd1aa2152f3780Y.webp?v=1771635957","url":"https:\/\/eastsupplier.com\/ja-fr\/products\/the-vacuum-valve-t9","provider":"EastSupplier Platform","version":"1.0","type":"link"}