{"product_id":"woo-audio-wa300-bal-power-amplifier-abyss-headphone-edition","title":"Woo Audio WA300-BAL Power Amplifier ABYSS Headphone Edition","description":"\u003ch2\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFirst shown at CanJam SoCal 2026, this speaker amplifier is INCREDIBLE with the ABYSS AB1266 TC or the ABYSS Diana TC Signature Headphones. This Bundled package includes the ABYSS Superconductor 4-Pin XLR female to stereo banana speaker plugs adapter, allowing you easy connection to your ABYSS Headphone right away.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDesign Philosophy\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eOur philosophy is to design a practical, dependable, easy-to-use integrated loudspeaker amplifier that is beautifully crafted, sonically stunning, and enjoyable to use. We achieve this through a simple circuit executed with a carefully planned implementation.\u003c\/p\u003e\n\u003cp\u003eThis is a Class-A, fully balanced, all-tube amplifier featuring in-house custom output transformers, zero feedback, and 25 watts per channel. It utilizes a dual-mono integrated amplifier configuration uniquely equipped with a dual motorized volume control, allowing independent volume adjustments for the left and right channels to dial in the perfect soundstage.\u003c\/p\u003e\n\u003cp\u003eThe chassis features a one-piece construction, machined from a massive billet aluminum block. The finish is sandblasted and anodized in sophisticated black with gold trims. There are 3 analog inputs (two XLR and one WBT RCA) selectable via the front right dial. The output is delivered via one set of WBT Nextgen speaker binding posts. The amplifier output impedance can be easily switched between a standard configuration of 8 Ohms or 4 Ohms via the front left dial. Standard features include soft-start and faulty-tube detection and protection. The amplifier includes a matching volume remote control machined from a solid piece of anodized aluminum, accentuated with gold-finished buttons.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSingle-Block Aluminum Chassis Construction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe benefits of using a single block of aluminum extend beyond visual presentation to sonic performance. Inside the block, designated compartments are precisely carved out for audio component placement so that the audio signal remains free from airborne frequency contamination. In addition, the massive block of metal acts as a giant heat sink, allowing the amplifier to operate at an optimal working temperature. Moreover, a single-block construction maximizes structural integrity, significantly reducing mechanical vibration and eliminating resonance.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eThe Driver Stage (Two Gain Stages)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe driver stage is a crucial component when utilizing 300B power tubes. The 300B is known for producing an organic sound with a rich, warm, and pleasant tone. To drive the 300B to its optimal performance, the driver stage must produce a sufficiently high voltage. A typical driver stage involves two active stages. In our experience, a simpler driver stage results in better sound and a lower noise floor. For this reason, we replaced an active driver with our in-house developed STEP-UP driver for the first stage.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirst Stage:\u003c\/strong\u003e Input voltage gain is achieved through our STEP-UP Driver, pioneered in our WA24 20th Anniversary headphone amp and flagship WA234 Mono-block amplifier. The STEP-UP Driver is a passive component that greatly reduces peripheral electric components and simplifies power supply requirements, delivering an ultra-low-noise, ultra-high-bandwidth output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecond Stage:\u003c\/strong\u003e A pair of 6SN7 driver tubes is utilized with a dual triode. Each 6SN7 is connected in a push-pull configuration, responsible for each channel. With the help of the first stage gain, the tube gain stage operates under low stress, achieving a high bandwidth and ultra-low-noise output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eOutput Stage\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eOne matched quad of 300B tubes is used. Each channel consists of one pair of 300B tubes connected in a push-pull configuration. The power transfer between the loudspeakers and the power tubes is coupled by our in-house developed custom output transformers (OPTs). The WA300-BAL OPTs are hand-wound and oversized. Our output transformer is a hallmark of Woo Audio's core technology, designed specifically for vacuum tube audio amplifiers. Our OPTs are low-loss, uncolored, high-bandwidth, and capable of driving heavy loads with grip and control. Naturally, the WA300-BAL can handle demanding speakers down to an 86dB sensitivity rating with authority.\u003c\/p\u003e\n\u003cp\u003eWoo Audio is known for offering a wide range of vacuum tube headphone amplifiers, earning a reputation for building amps with an ultra-low noise floor suitable for sensitive headphones. The new WA300-BAL power amp is no exception. It produces a pitch-black background, leaving you to focus entirely on the music.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHighlights\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIntroduced in March 2026\u003c\/li\u003e\n\u003cli\u003eLatest flagship integrated power amplifier\u003c\/li\u003e\n\u003cli\u003ePure Tube Design, 25W per channel, Class-A, zero feedback\u003c\/li\u003e\n\u003cli\u003eA matched quad of 300B power tubes and a pair of 6SN7 driver tubes\u003c\/li\u003e\n\u003cli\u003ePolytetrafluoroethylene (PTFE) tube sockets\u003c\/li\u003e\n\u003cli\u003eIn-house developed STEP-UP driver for unmatched accuracy and an ultra-low noise floor\u003c\/li\u003e\n\u003cli\u003eSpatial Balance Technology (SBT) with Dual Motorized Independent Left \u0026amp; Right Level Controls\u003c\/li\u003e\n\u003cli\u003eCustom hand-wound output transformers\u003c\/li\u003e\n\u003cli\u003eIndependent 4 or 8 Ohm speaker outputs with WBT-0710Cu binding posts\u003c\/li\u003e\n\u003cli\u003eTwo XLR balanced and one RCA (WBT) unbalanced inputs\u003c\/li\u003e\n\u003cli\u003eChassis machined from a single block of billet aluminum\u003c\/li\u003e\n\u003cli\u003eDimensions of amp without tubes: Width 380mm (15\") x Height 116mm (4.5\") x Depth 510mm (20\")\u003c\/li\u003e\n\u003cli\u003eHeight with tubes installed: approx. 230mm (9\")\u003c\/li\u003e\n\u003cli\u003eDesigned and assembled in New York, USA\u003c\/li\u003e\n\u003cli\u003eThree-year limited warranty [\u003ca href=\"https:\/\/wooaudio.com\/faq\" target=\"_blank\"\u003elearn more\u003c\/a\u003e]\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Package:\u003c\/strong\u003e Includes a set of stock tubes, either Psvane or Electro Harmonix, based on availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Package:\u003c\/strong\u003e Includes a set of upgrade tubes, a matched quad of Takatsuki TA-300B, and a pair of RCA 6SN7 NOS tubes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eIn the Box\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWA300-BAL Integrated Power Amplifier x 1\u003c\/li\u003e\n\u003cli\u003e300B power tubes x 4\u003c\/li\u003e\n\u003cli\u003e6SN7 driver tubes x 2\u003c\/li\u003e\n\u003cli\u003eQuick start guide\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eNote: AC power cord and audio cables are not included.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eShipped Separately\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eABYSS Superconductor 4-Pin XLR female to stereo banana speaker plugs adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eOptional A\/B Speaker Selector \u0026amp; Isolation Platform\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWoo Audio WA-P1000 Platform – Allows you to seamlessly switch between headphones and your existing speakers\u003c\/li\u003e\n\u003cli\u003eIntroduced in July 2026\u003c\/li\u003e\n\u003cli\u003eWA-P1000 (Speaker and Amplifier Switch and Vibration Control) Platform\u003c\/li\u003e\n\u003cli\u003eCrafted from a single block of aluminum for optimal vibration control\u003c\/li\u003e\n\u003cli\u003eOversized stainless steel spikes and discs\u003c\/li\u003e\n\u003cli\u003eAutomatic Open-Circuit Protection: Integrated dummy load safely absorbs up to 2,000 Watts into 8 Ohms or 1,000 Watts into 4 Ohms during a fault\u003c\/li\u003e\n\u003cli\u003eDimensions: Width 380mm (15\") x Depth 510mm (20\") x Total height 63mm (2.5\")\u003c\/li\u003e\n\u003cli\u003eWeight: 40 lbs (18 kg)\u003c\/li\u003e\n\u003cli\u003eWBT 0710 Cu Pole Terminal nextgen™ speaker posts x 12\u003c\/li\u003e\n\u003cli\u003eInput via a set of four speaker binding posts\u003c\/li\u003e\n\u003cli\u003eOutput via two sets of speaker binding posts\u003c\/li\u003e\n\u003cli\u003eSelectable A \u0026amp; B output via button on the front\u003c\/li\u003e\n\u003cli\u003eUSB-C powered for relay switching\u003c\/li\u003e\n\u003cli\u003eDesigned and assembled in New York, USA\u003c\/li\u003e\n\u003cli\u003eThree-year limited warranty [\u003ca href=\"https:\/\/wooaudio.com\/faq\" target=\"_blank\"\u003elearn more\u003c\/a\u003e]\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Woo Audio","offers":[{"title":"Standard Package \/ No speaker selector added \/ No Power Cable","offer_id":46613536211140,"sku":null,"price":42699.0,"currency_code":"NZD","in_stock":true},{"title":"Standard Package \/ No speaker selector added \/ Add Kaptovator Lite 2.0 meter Power Cable (save $750)","offer_id":46613633794244,"sku":null,"price":43993.0,"currency_code":"NZD","in_stock":true},{"title":"Standard Package \/ No speaker selector added \/ Add Kaptovator Ultra 2.0 meter Power Cable (save $1500)","offer_id":46613633827012,"sku":null,"price":45287.0,"currency_code":"NZD","in_stock":true},{"title":"Standard Package \/ WA-P1000 Platform and 1' Super V Speaker cable (save $1800) \/ No Power Cable","offer_id":46613633859780,"sku":null,"price":52098.0,"currency_code":"NZD","in_stock":true},{"title":"Standard Package \/ WA-P1000 Platform and 1' Super V Speaker cable (save $1800) \/ Add Kaptovator Lite 2.0 meter Power Cable (save $750)","offer_id":46613633892548,"sku":null,"price":53392.0,"currency_code":"NZD","in_stock":true},{"title":"Standard Package \/ WA-P1000 Platform and 1' Super V Speaker cable (save $1800) \/ Add Kaptovator Ultra 2.0 meter Power Cable (save $1500)","offer_id":46613633925316,"sku":null,"price":54686.0,"currency_code":"NZD","in_stock":true},{"title":"Premium Package (+$3000 USD) \/ No speaker selector added \/ No Power Cable","offer_id":46613536243908,"sku":null,"price":47875.0,"currency_code":"NZD","in_stock":true},{"title":"Premium Package (+$3000 USD) \/ No speaker selector added \/ Add Kaptovator Lite 2.0 meter Power Cable (save $750)","offer_id":46613633958084,"sku":null,"price":49169.0,"currency_code":"NZD","in_stock":true},{"title":"Premium Package (+$3000 USD) \/ No speaker selector added \/ Add Kaptovator Ultra 2.0 meter Power Cable (save $1500)","offer_id":46613633990852,"sku":null,"price":50463.0,"currency_code":"NZD","in_stock":true},{"title":"Premium Package (+$3000 USD) \/ WA-P1000 Platform and 1' Super V Speaker cable (save $1800) \/ No Power Cable","offer_id":46613634023620,"sku":null,"price":57274.0,"currency_code":"NZD","in_stock":true},{"title":"Premium Package (+$3000 USD) \/ WA-P1000 Platform and 1' Super V Speaker cable (save $1800) \/ Add Kaptovator Lite 2.0 meter Power Cable (save $750)","offer_id":46613634056388,"sku":null,"price":58568.0,"currency_code":"NZD","in_stock":true},{"title":"Premium Package (+$3000 USD) \/ WA-P1000 Platform and 1' Super V Speaker cable (save $1800) \/ Add Kaptovator Ultra 2.0 meter Power Cable (save $1500)","offer_id":46613634089156,"sku":null,"price":59862.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2685\/4510\/files\/wa300-balfront.jpg?v=1788554463","url":"https:\/\/abyss-headphones.com\/en-nz\/products\/woo-audio-wa300-bal-power-amplifier-abyss-headphone-edition","provider":"ABYSS Headphones","version":"1.0","type":"link"}