{"product_id":"cayin-ha-3a-tube-headphone-amplifier-4","title":"Cayin HA-3A Tube Headphone Amplifier","description":"The Cayin HA-3A is a transformer-coupled tube headphone amplifier delivering up to 850mW per channel output power through 4-pin XLR, 4.4mm balanced, and 6.35mm single-ended jacks. Designed to serve as a versatile desktop centerpiece for high-end personal audio systems, this pure tube component features a single-ended two-stage circuit using dual JJ 12AU7 driver tubes, dual Electro-Harmonix 6V6GT output tubes, and an RCA 25AX4GT rectifier tube. Point-to-point hand wiring and custom in-house wound power transformers ensure pristine signal purity, while a three-position impedance selector optimizes output drive for headphones ranging from 8 to 600 ohms.\n\nCritical consensus praises the HA-3A for delivering rich tube warmth, organic midrange texture, and impressive dynamic scale. Outlets like Headphone Guru highlight its realistic instrumental timbre and three-dimensional soundstage depth, praising its ability to resolve fine micro-details effortlessly. Reviewers consistently emphasize its exceptionally quiet background noise floor, point-to-point hand-wired craftsmanship, and extraordinary overall value.\n\nIntegrating this vacuum tube amplifier into your rig introduces natural intimacy, fast transient response, and fluid authority to every recording. Its precise impedance matching optimizes power delivery so your favorite headphones perform at their full sonic potential. It presents a compelling choice for audio enthusiasts seeking genuine tube musicality and timeless engineering.","brand":"Cayin","offers":[{"title":"Default Title","offer_id":67738818969881,"sku":"101038","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/101038-8.jpg?v=1791598754","url":"https:\/\/tmraudio.com\/products\/cayin-ha-3a-tube-headphone-amplifier-4","provider":"The Music Room","version":"1.0","type":"link"}