{"product_id":"aiyima-t20-vacuum-tube-preamplifier-ecc83-fully-balanced-preamp-rca-xlr-input-hifi-stereo-dac-amp-12v-trigger-output","title":"AIYIMA T20 Vacuum Tube Preamplifier  ECC83","description":"\u003ch3\u003e【 Fully Balanced Hi-Fi Vacuum Tube Preamplifier 】 Extremely low noise, low distortion, wide dynamic range, faithfully amplifies and transmits signals without adding excessive coldness, fully balanced circuit design\/high-end operational amplifier chip\/rich and mellow sound color, SNR : ≥112dB\/ THD+N 0.003%\/ Dynamic Range: 109dB\u003c\/h3\u003e\n\u003ch3\u003e【ECC83 Vacuum Tube 】 PSVANE ECC83 electronic tube has a warm and rich tone, and it also features a wide dynamic range. The listening experience is both soft and full of tension. With a power supply of up to 180v for the tube, the electronic tube can perform at its best. Different models of vacuum tubes, such as 12AX7-S, 12AX7B, 7025 and 12AX7, can be replaced to experience different tones.\u003cspan style=\"color: rgb(244, 78, 59); font-size: 18px;\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003ch3\u003e【LME49720+OPA1612 Operational Amplifier Chip 】 Top-tier operational amplifier chip combination, three plug-in operational amplifiers, supporting free replacement to meet the pursuit of different tones. Replaceable operational amplifier chips: LM4562, NE5532, OPA2604, OPA2134, JRC5532, etc.\u003c\/h3\u003e\n\u003ch3\u003e【 Input Mode 】 The T20 supports both XLR and RCA input\/output interfaces, offering multiple options. Even professional HIFI is suitable for home scenarios and can be adapted to.\u003c\/h3\u003e\n\u003ch3\u003e【 Brand-new elegant appearance Design 】 The front panel features a multi-functional knob with a red ring. The knob integrates multiple functions and can be rotated infinitely. Short press to turn on the device and switch input modes, while long press to turn it off. Double-click to mute; Rotate to adjust the volume, digital volume display, 12V TRIGGER output\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cstrong\u003eT20 Design Philosophy Q\u0026amp;A\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cstrong\u003eQ: Why doesn’t the T20 preamp have bass\/treble adjustment?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cbr\u003eA: Bass\/treble adjustment is indeed an important feature for entry-level preamps. However, in the high-end T20, we intentionally omitted it in order to:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e1. Achieve a purer and shorter signal path, reducing distortion and noise;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e2. Maximize the performance of the core amplification circuit (tube buffer + op-amp amplification + fully balanced design);\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e3. Uphold a pure commitment to the “high-fidelity” design philosophy.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cstrong\u003eQ: Why does the digital display show a 20-second countdown at startup?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cbr\u003eA: The main purpose is to protect the vacuum tube and extend its lifespan. The 12AX7 tube is the core amplification element. Vacuum tubes require a heated filament (cathode) to emit electrons. If high-voltage is applied before the filament reaches operating temperature, it puts great stress on the cathode, accelerating its aging and shortening tube life.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cstrong\u003eQ: How does the T20 sound differ from other traditional tube preamps in terms of tuning?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cbr\u003eA: The T20 uses a combination of ECC83 (12AX7) vacuum tubes and LME49720 op-amps, resulting in the following sonic performance:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cstrong\u003eHigh frequencies:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e Retains the extreme detail and extension of the LME49720 while being smoothed by the 12AX7, making it natural and non-fatiguing. Cymbals and violins present rich overtones without harsh “digital” glare.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cstrong\u003eMid frequencies:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e This is the T20’s strength. Vocals and instruments are warm, intimate, and emotionally engaging, while maintaining clear imaging and positioning. Unlike some tube preamps, it avoids sounding overly thick or blurred.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cstrong\u003eLow frequencies:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e Excellent control, fast response, deep extension, and tight bass. With the LME49720’s strong driving capability and low output impedance, the bass is solid and punchy, closer to high-quality solid-state amplifiers than to the loose feel of traditional tube preamps.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cstrong\u003eSoundstage and resolution:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e The LME49720 provides a wide soundstage, precise imaging, black background, and abundant detail. The 12AX7 complements rather than diminishes these qualities, making the details more pleasant and listenable.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cstrong\u003eQ: The 12AX7 tube requires high voltage, but the T20 input power is only 12V. Is the tube merely decorative?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\"\u003e\u003cspan style=\"font-size: 18px; font-family: Calibri;\" class=\"15\"\u003e\u003cbr\u003eA: The T20 adopts true anode amplification, internally boosting the\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 12pt; font-family: Calibri;\"\u003e voltage to 180V. This allows the vacuum tube to fully perform to its potential, making the T20 a genuine tube preamp.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp align=\"start\" style=\"font-family: 'TT Norms Pro', 'Open Sans', Roboto, Arial, Helvetica, sans-serif, SimSun; font-size: 14px; font-weight: 400; letter-spacing: normal; line-height: inherit; text-align: start; white-space: normal; color: rgb(34, 34, 34); margin: 0px; padding: 0px; box-sizing: border-box;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S8f2d55b5426d4963a7eda5901852935aj.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sf5c3bf899ea8402abd7fec6ae44fa866t.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S67d24da5f11b49a888aea8180ac37f88m.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S2c70d9d4688248a588654899ef6a7754h.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S00e2d05612014b728acaf1634be287d2a.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S23697c763a504e4c919fc3a400b004a0K.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S0568dacbad0243819bad40c6ebff28dcH.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S6a9c4a2ba1ca4f438c3984bbc7120aa5p.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S71529bc5e65745e2b4e48aa3de44f5b6y.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sb840d4c5ecce4d799ae351739b5d1075y.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sd811b5af081a472c8a3f7daf4a0278998.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sd064e797ada742e9add5bb00aaafa4c4S.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sf42f9c4ac13249f49549fa6d784ac044N.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Se6ac6f32fe164304b290ab2fc96d4119k.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sd374b845d76744a296b10fa9d461b9e4T.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Se0f06def1fc54a6d885c7c2f3ed63f08Y.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Dymphna's Archive","offers":[{"title":"T20 with 12V2A EU","offer_id":53293755629908,"sku":"14:1202#T20 with 12V2A EU","price":160.67,"currency_code":"GBP","in_stock":true},{"title":"T20 with 12V2A AU","offer_id":53293755662676,"sku":"14:1254#T20 with 12V2A AU","price":160.67,"currency_code":"GBP","in_stock":true},{"title":"T20 with 12V2A US","offer_id":53293755695444,"sku":"14:350853#T20 with 12V2A US","price":160.67,"currency_code":"GBP","in_stock":true},{"title":"T20 with 12V2A UK","offer_id":53293755728212,"sku":"14:193#T20 with 12V2A UK","price":160.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/2703\/6244\/files\/S4336e504c2284e02a9f27baf0c2c4df3G.webp?v=1767016355","url":"https:\/\/dymphnasarchive.myshopify.com\/products\/aiyima-t20-vacuum-tube-preamplifier-ecc83-fully-balanced-preamp-rca-xlr-input-hifi-stereo-dac-amp-12v-trigger-output","provider":"Dymphna's Archive","version":"1.0","type":"link"}