{"product_id":"gustard-h26-class-a-headphone-amplifier","title":"GUSTARD H26 Fully Balanced Discrete Class A Headphone Amplifier \u0026 Preamplifier","description":"\u003cp\u003e\u003cstrong\u003eGUSTARD H26 Class A Headphone Amplifier \u0026amp; Preamplifier\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe GUSTARD H26 is a fully balanced discrete Class A headphone amplifier and preamplifier in one chassis, designed for listeners who want power, control, and flexibility on the desk or in a speaker chain. Built around eight pairs of power transistors, a matrix relay volume control, and dual toroidal transformers, the H26 combines reference-grade headphone driving capability with a dedicated preamp output stage that switches cleanly between the two roles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully Balanced Discrete Class A Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe H26 uses a fully balanced discrete Class A circuit with eight pairs of power transistors. Discrete components let each stage be tuned independently, giving the amplifier tighter control over distortion and current delivery while supporting a wide range of tuning options through different circuit configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwitchable Headphone \u0026amp; Preamplifier Modes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe headphone amplifier stage can be powered off independently, turning the H26 into a dedicated preamplifier. Preamp outputs can also be disabled, so you can move between headphone listening and a speaker chain without unplugging cables or changing connections.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMatrix Relay Volume Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVolume is handled by a matrix relay network instead of a traditional potentiometer. Left and right channels stay aligned across all four channels and all volume levels, reducing channel imbalance at low listening levels and keeping adjustments stable and precise.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully Balanced Input Stage with RCA Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe input stage is fully balanced, with single-ended-to-balanced conversion for RCA sources. This lets single-ended inputs benefit from the balanced architecture, improving noise rejection and signal stability as the audio moves through the amplifier.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLME49720-Based Preamplifier Stage\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTwo directly socketed LME49720 dual op-amps power the preamp section, chosen for their low noise and linear performance. They preserve signal integrity before amplification and maintain clarity across the entire frequency range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Toroidal Power Supply\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTwo 50W custom audio-grade toroidal transformers feed the left and right channels independently. Separating the channels reduces interference and keeps power delivery consistent, even during dynamic passages where both channels demand current at the same time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLow-Noise Power Regulation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA high-speed, low-noise rectifier and Nichicon capacitor filtering stage work with a low-noise, high-current voltage regulator. This stabilizes the power supply, lowers background noise, and supports the amplifier’s low distortion and high signal-to-noise ratio.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower for a Wide Range of Headphones\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe H26 delivers up to 12,000mW into 32 ohms (THD 1%) with strong output across higher impedances – 7,350mW at 64 ohms, 3,125mW at 150 ohms, 1,576mW at 300 ohms, and 788mW at 600 ohms – giving it the headroom needed for both low- and high-impedance headphones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Connectivity \u0026amp; Compact Build\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe rear panel offers one RCA input and two XLR inputs, plus RCA and XLR preamp outputs. Single-ended (6.35mm) and balanced (4-pin XLR \/ 4.4mm) headphone outputs cover every common connector. The 330 × 260 × 65 mm chassis fits comfortably on a desk or rack, and the included remote control adjusts volume from a distance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Design:\u003c\/strong\u003e Fully balanced discrete Class A, 8 pairs of power transistors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e RCA ×1 (sensitivity 2–3Vrms, impedance 4kΩ); XLR ×2 (sensitivity 4–6Vrms, max 12Vrms, impedance 8kΩ)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreamplifier Outputs:\u003c\/strong\u003e RCA ×1 + XLR ×1 (output impedance 100Ω)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone Outputs:\u003c\/strong\u003e 6.35mm single-ended (0.05Ω); 4-pin XLR \/ 4.4mm balanced (0.1Ω)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Headphone Power:\u003c\/strong\u003e 12,000mW @ 32Ω (THD 1%); 6,000mW @ 32Ω undistorted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Power Per Channel:\u003c\/strong\u003e 7,350mW @ 64Ω; 3,125mW @ 150Ω; 1,576mW @ 300Ω; 788mW @ 600Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20Hz–80kHz (−0.1dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio (Preamp):\u003c\/strong\u003e \u0026gt;123dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrosstalk (Preamp):\u003c\/strong\u003e \u0026lt;−123dB @ 1kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N (Preamp):\u003c\/strong\u003e \u0026lt;0.0002%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIMD (Preamp):\u003c\/strong\u003e \u0026lt;0.0003%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrosstalk (Headphone):\u003c\/strong\u003e \u0026lt;−120dB @ 1kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N (Headphone):\u003c\/strong\u003e \u0026lt;0.0005% @ 9,700mW into 32Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIMD (Headphone):\u003c\/strong\u003e \u0026lt;0.0005% @ 9,700mW into 32Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume Control:\u003c\/strong\u003e Matrix relay volume control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e Dual 50W custom toroidal transformers (one per channel); Nichicon filtering; low-noise high-current regulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Power Input:\u003c\/strong\u003e 100–240V (manually adjusted); power consumption \u0026lt;30W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W×H×D):\u003c\/strong\u003e 330 × 260 × 65 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.0 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColors:\u003c\/strong\u003e Black, Silver\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGUSTARD H26 Class A headphone amplifier \u0026amp; preamplifier\u003c\/li\u003e\n\u003cli\u003eRemote control\u003c\/li\u003e\n\u003cli\u003ePower cable\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-class-a-headphone-amplifier-hero.jpg?v=1787221105\" alt=\"gustard h26 class a headphone amplifier hero\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-class-a-headphone-amplifier-introduction.jpg?v=1787221106\" alt=\"gustard h26 class a headphone amplifier introduction\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-class-a-headphone-amplifier-overview.jpg?v=1787221106\" alt=\"gustard h26 class a headphone amplifier overview\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-fully-balanced-class-a-architecture.jpg?v=1787221105\" alt=\"gustard h26 fully balanced class a architecture\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-discrete-class-a-amplifier-stage.jpg?v=1787221106\" alt=\"gustard h26 discrete class a amplifier stage\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-eight-pairs-power-transistors.jpg?v=1787221105\" alt=\"gustard h26 eight pairs power transistors\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-matrix-relay-volume-control.jpg?v=1787221105\" alt=\"gustard h26 matrix relay volume control\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-dual-toroidal-transformer-power.jpg?v=1787221104\" alt=\"gustard h26 dual toroidal transformer power\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-lme49720-preamp-op-amps.jpg?v=1787221105\" alt=\"gustard h26 lme49720 preamp op amps\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-headphone-preamp-mode-switching.jpg?v=1787221106\" alt=\"gustard h26 headphone preamp mode switching\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-balanced-input-stage.jpg?v=1787221105\" alt=\"gustard h26 balanced input stage\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-output-power-drive-capability.jpg?v=1787221105\" alt=\"gustard h26 output power drive capability\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-internal-circuit-layout.jpg?v=1787221104\" alt=\"gustard h26 internal circuit layout\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-low-noise-power-regulation.jpg?v=1787221103\" alt=\"gustard h26 low noise power regulation\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-front-panel-connectivity.jpg?v=1787221106\" alt=\"gustard h26 front panel connectivity\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-rear-panel-inputs-outputs.jpg?v=1787221105\" alt=\"gustard h26 rear panel inputs outputs\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-remote-control-volume.jpg?v=1787221106\" alt=\"gustard h26 remote control volume\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-technical-specifications.jpg?v=1787221107\" alt=\"gustard h26 technical specifications\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-dimensions-measurements.jpg?v=1787221106\" alt=\"gustard h26 dimensions measurements\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-in-the-box-package.jpg?v=1787221105\" alt=\"gustard h26 in the box package\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-accessories-remote-control.jpg?v=1787221102\" alt=\"gustard h26 accessories remote control\"\u003e\u003c\/p\u003e","brand":"GUSTARD","offers":[{"title":"Black","offer_id":48851250577600,"sku":"10016936","price":9196.92,"currency_code":"HKD","in_stock":true},{"title":"Silver","offer_id":48851252019392,"sku":"10013844","price":9196.92,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/gustard-h26-class-a-headphone-amplifier-rear-panel-view.jpg?v=1787221108","url":"https:\/\/hifichic.com\/products\/gustard-h26-class-a-headphone-amplifier","provider":"HIFICHIC","version":"1.0","type":"link"}