{"product_id":"cayin-ha-1a-mk3-type-uk-headphone-amplifier","title":"Cayin HA-1A MK3 Type UK Headphone Amplifier","description":"\u003cp\u003eThe \u003cstrong\u003eCayin HA-1A MK3\u003c\/strong\u003e is a compact Class A vacuum tube headphone amplifier and dedicated preamplifier, delivering pure valve tone within a space-saving 240 x 240 mm footprint. Built on Cayin's extensive tube amplification heritage, the HA-1A MK3 employs a hand-assembled circuit featuring twin JJ 12AU7 \/ ECC82 driver valves paired with two Electro-Harmonix EL84EH \/ 6BQ5 power tubes. This Class A topology is supported by custom-designed EI power and output transformers, delivering up to 2.7W + 2.7W of output power across headphones ranging from 8 Ω to 600 Ω.\u003c\/p\u003e\n\n\u003cp\u003eEquipped with both a 6.35mm single-ended headphone jack and a 4-pin XLR balanced connector, the HA-1A MK3 features selectable low and high impedance matching modes to optimize current drive for low-sensitivity planar magnetic cans and high-impedance dynamic headphones alike. Signal levels are adjusted via an ALPS volume potentiometer, complemented by two stereo RCA inputs and a dedicated RCA preamplifier output supplying up to 5V output for driving active speakers or external power amplifiers.\u003c\/p\u003e\n\n\u003ch3\u003eKEY FEATURES \u0026amp; PROPRIETARY TECHNOLOGIES\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePure Class A Vacuum Tube Topology:\u003c\/strong\u003e Driven by twin JJ 12AU7 \/ ECC82 driver tubes and dual Electro-Harmonix EL84EH \/ 6BQ5 power output valves for smooth, harmonic-rich playback.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eCustom In-House Transformers:\u003c\/strong\u003e Features custom-wound EI power supply and output transformers to maintain low noise, high bandwidth, and stable load driving.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eBalanced \u0026amp; Single-Ended Headphone Connections:\u003c\/strong\u003e Delivers up to 2,700 mW per channel via a 4-pin XLR balanced output, and up to 2,400 mW per channel through a 6.35mm single-ended output.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eSelectable Output Impedance Matching:\u003c\/strong\u003e Dual low\/high impedance settings accommodate a wide variety of headphones from 8 Ω to 600 Ω.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDedicated RCA Preamplifier Output:\u003c\/strong\u003e Functions as a high-quality line preamplifier supplying 15 dB gain and up to 5V maximum output to external power amplifiers or active monitors.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePrecision Volume \u0026amp; Compact Chassis:\u003c\/strong\u003e Incorporates a smooth ALPS volume potentiometer housed in an 8.8 kg anti-resonant aluminum chassis available in Black or Silver.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\n\n\u003ctable style=\"width: 100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eDetail\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Category\u003c\/td\u003e\n      \u003ctd\u003eClass A Vacuum Tube Headphone Amplifier \u0026amp; Preamplifier\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBrand \/ Model\u003c\/td\u003e\n      \u003ctd\u003eCayin — HA-1A MK3\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAmplifier Circuit Class\u003c\/td\u003e\n      \u003ctd\u003ePure Class A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eVacuum Tube Complement\u003c\/td\u003e\n      \u003ctd\u003e2x JJ 12AU7 \/ ECC82 (Driver Stage) | 2x Electro-Harmonix EL84EH \/ 6BQ5 (Output Stage)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHeadphone Outputs\u003c\/td\u003e\n      \u003ctd\u003e1x 4-Pin XLR Balanced, 1x 6.35mm (1\/4\") Single-Ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBalanced Output Power (4-Pin XLR)\u003c\/td\u003e\n      \u003ctd\u003e2,700 mW + 2,700 mW\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSingle-Ended Output Power (6.35mm)\u003c\/td\u003e\n      \u003ctd\u003e2,400 mW + 2,400 mW\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHeadphone Impedance Matching\u003c\/td\u003e\n      \u003ctd\u003eSelectable Low \u0026amp; High Impedance Modes (Supports 8 Ω – 600 Ω)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd\u003e20 Hz – 20,000 Hz (-3 dB)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTotal Harmonic Distortion (THD)\u003c\/td\u003e\n      \u003ctd\u003e0.5% @ 1 kHz \/ 200 mW | \u0026lt; 5% at Rated Output Power\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHeadphone Signal-to-Noise Ratio\u003c\/td\u003e\n      \u003ctd\u003e100 dB (A-Weighted)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAudio Inputs\u003c\/td\u003e\n      \u003ctd\u003e2x Stereo RCA Line Inputs (47 kΩ Input Impedance)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLine Input Sensitivity\u003c\/td\u003e\n      \u003ctd\u003e200 mV – 2,000 mV\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePreamplifier Output\u003c\/td\u003e\n      \u003ctd\u003e1x Stereo RCA Pre-Out (10 kΩ Output Impedance | 5V Max Output | 15 dB Gain)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePreamplifier Performance\u003c\/td\u003e\n      \u003ctd\u003eTHD: 0.1% @ 2V RMS | SNR: 100 dB (A-Weighted) | Sensitivity: 200 mV\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eVolume Attenuation\u003c\/td\u003e\n      \u003ctd\u003eALPS Rotary Volume Potentiometer\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Supply \u0026amp; Fuse\u003c\/td\u003e\n      \u003ctd\u003eCustom Power Transformer | Fuse Rating: T500mAL250V\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMaximum Power Consumption\u003c\/td\u003e\n      \u003ctd\u003e65 W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDimensions (W x D x H)\u003c\/td\u003e\n      \u003ctd\u003e240 x 240 x 140 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNet Weight\u003c\/td\u003e\n      \u003ctd\u003e8.8 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAvailable Finishes\u003c\/td\u003e\n      \u003ctd\u003eBlack \/ Silver\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Cayin","offers":[{"title":"Satin Black","offer_id":53776186966282,"sku":"CAYIN-HA-1A-MK3-1","price":840.0,"currency_code":"GBP","in_stock":true},{"title":"Satin Silver","offer_id":53776186999050,"sku":"CAYIN-HA-1A-MK3-2","price":840.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3283\/6618\/files\/cayin-ha-1a-mk3-type-uk-headphone-amplifier-52307-p_46db126c-255f-494c-81a1-b3782212da6c.jpg?v=1789921629","url":"https:\/\/audioemotion.co.uk\/products\/cayin-ha-1a-mk3-type-uk-headphone-amplifier","provider":"Audio Emotion Limited","version":"1.0","type":"link"}