{"product_id":"woo-audio-wa5-le-headphone-amplifier","title":"Woo Audio WA5 LE Headphone Amplifier","description":"\u003cdiv style=\"max-width: 720px; margin: 0 auto; padding: 32px 24px 48px 24px; background: #ffffff;\"\u003e\n\u003ch2 style=\"font-size: 1.25em; margin: 0 0 0.35em 0; font-weight: 600;\"\u003eThe Legendary 300B, Devoted to Headphones\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eAsk a tube devotee to name the greatest power tube ever made. The answer is usually the 300B. This directly heated triode has been prized since the 1930s. People buy it for a rich midrange and a natural way with voices. The Woo Audio WA5-LE is built around a pair of them.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eIt is a single-ended triode, Class-A, all-tube design, made for headphones alone. Nothing in it is asked to drive a speaker, and the output stage is the better for it.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eTwo 6SN7 driver tubes feed the 300Bs. Dual 5U4G rectifiers handle the power supply. The result is up to 8 watts, a huge reserve for a headphone amp, from both the 4-pin XLR and the quarter-inch outputs. High and low switches cover power, impedance and level. They match that reserve to anything from a sensitive in-ear to a 600-ohm dynamic.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eFrequency response runs 10Hz to 60kHz (-2dB). Signal-to-noise ratio is 95dB or better, and distortion is 0.08% or less. Those numbers hold across the whole output range, not just at a convenient level.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 1.25em; margin: 1.4em 0 0.35em 0; font-weight: 600;\"\u003eTwo Chassis, One Purpose\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eThe WA5-LE is a two-piece design. The power supply lives in its own chassis, which keeps transformer noise away from the signal circuit. Each chassis measures 9 inches wide by 17 deep. Together they weigh over 70 pounds.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eLike every Woo Audio amplifier, it's handcrafted in New York with point-to-point wiring rather than circuit boards, gold-plated inputs, and an ALPS volume control. The design is self-biasing, so swapping tubes needs no adjustments.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe 300B is one of the most rewarding tubes to roll, with options from cheap current production to sought-after vintage glass. It takes global voltage from 100 to 240 volts, and the anodized aluminum chassis comes in black or silver.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 1.25em; margin: 1.4em 0 0.35em 0; font-weight: 600;\"\u003eWhat Reviewers Are Saying\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eDubstep Girl of \u003cem\u003eHeadphone Guru\u003c\/em\u003e, reviewing the second-generation WA5-LE on April 12, 2016, wrote that \"the amplifier is transparent and has tons of spatial details with an ethereal presence and air around every note,\" adding that it's \"dynamic and focused across the entire frequency range\" with \"significantly more energy behind every note\" than the version it replaced, and \"tight and punchy\" bass.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 1.25em; margin: 1.4em 0 0.35em 0; font-weight: 600;\"\u003eWho Is This Amplifier Best For?\u003c\/h2\u003e\n\u003cul style=\"margin: 0 0 0.9em 0; padding-left: 1.4em; line-height: 1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou want to hear the legendary 300B tube\u003c\/strong\u003e — this is one of the most accessible ways to own a true 300B amplifier from a major builder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou own hard-to-drive headphones\u003c\/strong\u003e — 8 watts of Class-A power handles demanding planars and 600-ohm dynamics with ease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou want one amp for every headphone you own\u003c\/strong\u003e — selectable power, impedance, and level settings match it to sensitive and demanding loads alike.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou plan to explore tube rolling\u003c\/strong\u003e — the 300B, 6SN7, and rectifier families offer decades of options, and the self-biasing design makes swaps simple.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesk space is tight, or you want something you just switch on\u003c\/strong\u003e — this is a 70-pound amplifier in two chassis, and a single-box design from our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/headphone-amplifiers\" style=\"color:#8a5a2b;\"\u003eheadphone amplifiers\u003c\/a\u003e fits a small room far more easily.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size: 1.25em; margin: 1.4em 0 0.35em 0; font-weight: 600;\"\u003eHow Does It Connect to Your System?\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eConnect up to three sources: one balanced XLR pair and two RCA pairs. Headphones plug into the 4-pin XLR or 1\/4\" jack, and the three high\/low switches let you dial in the right power, impedance, and level for your specific pair.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003ePlan your rack around the two-chassis layout, each piece is 9\" wide and 17\" deep, and give the tubes generous ventilation. Let them warm up for a few minutes before serious listening.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 1.25em; margin: 1.4em 0 0.35em 0; font-weight: 600;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eBuilding your system? Here are some great companions for the WA5-LE:\u003c\/p\u003e\n\u003cul style=\"margin: 0 0 0.9em 0; padding-left: 1.4em; line-height: 1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphones:\u003c\/strong\u003e An amp this capable deserves a reference headphone — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/headphones\" style=\"color: #8a5a2b;\"\u003eHeadphones\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDAC:\u003c\/strong\u003e A balanced source makes the most of the XLR input — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/digital-to-analog-converters\" style=\"color: #8a5a2b;\"\u003eDigital-to-Analog Converters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCables:\u003c\/strong\u003e Quality interconnects matter at this level — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/interconnect-cables\" style=\"color: #8a5a2b;\"\u003eInterconnect Cables\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudio Rack:\u003c\/strong\u003e Two chassis need a sturdy, ventilated home — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/audio-racks\" style=\"color: #8a5a2b;\"\u003eAudio Racks\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size: 1.25em; margin: 1.4em 0 0.35em 0; font-weight: 600;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 style=\"font-size: 1.05em; margin: 0.9em 0 0.25em 0; font-weight: 600;\"\u003eWhat makes the 300B tube special?\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eIt's a directly heated triode dating to the 1930s, prized for a rich, natural midrange. It remains one of the most sought-after power tubes in high-end audio.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 1.05em; margin: 0.9em 0 0.25em 0; font-weight: 600;\"\u003eHow powerful is it?\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eUp to 8 watts, from both the 4-pin XLR and 1\/4\" outputs, with selectable high\/low power, impedance, and level settings for headphones from 8 to 600 ohms.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 1.05em; margin: 0.9em 0 0.25em 0; font-weight: 600;\"\u003eWhat tubes does it use?\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eTwo 6SN7 drivers, two 300B power tubes, and two 5U4G rectifiers. The self-biasing design makes tube rolling simple.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 1.05em; margin: 0.9em 0 0.25em 0; font-weight: 600;\"\u003eWhy two chassis?\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eThe power supply lives in its own enclosure, keeping transformer noise physically separated from the audio circuit.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 1.05em; margin: 0.9em 0 0.25em 0; font-weight: 600;\"\u003eCan it drive speakers?\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eHeadphones are its job. Its sibling, the WA5, adds speaker outputs.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 1.05em; margin: 0.9em 0 0.25em 0; font-weight: 600;\"\u003eWhat's the warranty?\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eWoo Audio covers the WA5-LE with a 3-year limited warranty.\u003c\/p\u003e\n  \u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eSee It in Action\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.5em 0;line-height:1.55;\"\u003eWoo Audio walks through the WA5 platform this amplifier is built on (the WA5-LE is the headphone-only version of the amp shown):\u003c\/p\u003e\n\n\u003ciframe width=\"100%\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/wu2wUhXEjlM\" title=\"Classic 300B Tube Amp for Headphones and Speakers, WA5 (2nd gen) Amplifier\" style=\"border:0;margin:0 0 0.9em 0;display:block;\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003ch2 style=\"font-size: 1.25em; margin: 1.4em 0 0.35em 0; font-weight: 600;\"\u003eWhy Audio Advisor?\u003c\/h2\u003e\n\u003cul style=\"margin: 0 0 0.9em 0; padding-left: 1.4em; line-height: 1.6;\"\u003e\n\u003cli\u003e40+ Years of Expertise — Since 1981, we've helped over a million music lovers find the right gear.\u003c\/li\u003e\n\u003cli\u003e60-Day Money-Back Guarantee — Take your time. Listen, enjoy, and make sure it's right for you.\u003c\/li\u003e\n\u003cli\u003eReal Experts, Real Help — Our team is here to answer your questions at 800-942-0220, weekdays 9am–6pm EST.\u003c\/li\u003e\n\u003cli\u003eFree Shipping — On orders over $49, delivered to your door.\u003c\/li\u003e\n\u003cli\u003eFlexible Payment Options — Financing available so you can start listening now.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size: 1.25em; margin: 1.4em 0 0.35em 0; font-weight: 600;\"\u003eLearn More\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 0.9em 0; line-height: 1.55;\"\u003eWant to learn more about headphone amplifiers, tube audio, or building a reference headphone system? Visit our \u003ca href=\"https:\/\/learningcenter.audioadvisor.com\/\" style=\"color: #8a5a2b;\"\u003eLearning Center\u003c\/a\u003e for guides, tips, and expert advice.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Audio Advisor","offers":[{"title":"Black \/ New","offer_id":45983307202733,"sku":"NEW-WAWA5LE-BLK","price":4499.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ New","offer_id":45982011490477,"sku":"NEW-WAWA5LE-SIL","price":4499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3708\/1773\/files\/CodexImageAug22_2026_11_12_48AM.png?v=1787411605","url":"https:\/\/www.audioadvisor.com\/products\/woo-audio-wa5-le-headphone-amplifier","provider":"Audio Advisor","version":"1.0","type":"link"}