{"product_id":"fiio-ea13-full-size-vacuum-tube-power-amplifier","title":"FIIO EA13 Full-Size Vacuum Tube Power Amplifier","description":"\u003ch1\u003e\u003cstrong\u003e28W Class-A Stereo Tube Power Amp\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe FIIO EA13 is a pure Class-A push-pull vacuum tube amplifier built around two SYLVANIA NOS PCF80 preamp tubes and four JJ ELECTRONIC EL34 power tubes. It delivers up to 28W + 28W of speaker output, with dedicated 4Ω and 8Ω connections, four RCA analog inputs, a 6.35mm headphone output, mechanical VU meters, and a stepped high-precision analog volume control. Its custom output transformers and carefully selected internal components support the warm tonal character and controlled output associated with traditional tube amplification.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSix imported vacuum tubes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVoltage amplification is handled by two SYLVANIA NOS PCF80 tubes from the American tube manufacturer, while four Czech-made JJ ELECTRONIC EL34 tubes provide the power amplification stage. Together, they give the EA13 its smooth, full-bodied tube character while maintaining an open and natural presentation.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eClass-A push-pull amplification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe EA13 uses a pentode-mode, pure Class-A push-pull circuit inspired by classic tube amplifier designs. Speaker output reaches 28W + 28W at either 4Ω or 8Ω at THD+N below 5%, providing useful power for many bookshelf speakers and selected floor-standing models. At THD+N below 1%, rated output is at least 18W + 18W.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCustom output transformers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCustom EI silicon-steel output transformers are designed for wide bandwidth and low noise. Each transformer is internally filled with epoxy resin and fine sand before being sealed inside a protective enclosure. This construction helps reduce vibration while providing electromagnetic shielding and moisture protection.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRigid aluminum construction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe front panel is CNC-machined from aviation-grade aluminum, then thickened and sandblasted for a solid, finely textured finish. A unibody chassis adds structural rigidity and electromagnetic shielding. Recessed tube mounting, an integrated protective cover, side ventilation grilles, and vibration-damping feet support safe operation and stable placement.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStepped analog volume control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA stepped high-precision analog potentiometer provides 40 levels of volume adjustment. Precision resistors are matched at each increment to maintain consistent left and right channel balance while reducing the imbalance and long-term wear associated with conventional carbon-film potentiometers.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMechanical VU meters\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDual-channel mechanical VU meters provide a visual indication of signal level, with warm LED backlighting controlled by a dedicated IC. The needles respond directly to the music signal for a traditional analog display.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAudiophile-grade internal components\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAxial metal-film coupling capacitors are selected for low loss, low distortion, and stable electrical performance. Large-capacity Japanese NCC filter electrolytic capacitors support the amplifier's power supply and help maintain a low-noise operating environment.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFlexible analog connectivity\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFour RCA analog inputs accommodate sources such as streamers, turntables with a suitable phono stage, CD players, and DACs. Gold-plated binding posts provide separate 4Ω and 8Ω speaker connections, while the front-panel 6.35mm headphone output supports headphones from 16Ω to 300Ω.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e12V trigger control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA dedicated 12V Trigger In connection allows the EA13 to power on and off in coordination with compatible audio components, making it easier to integrate into a multi-component HiFi system.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDirect front-panel control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA four-position input selector provides clear tactile switching between connected sources. The left control also manages knob illumination and VU meter backlighting through single- and double-press commands.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAutomatic low-power standby\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA precision signal-detection circuit continuously monitors the selected input. After 30 minutes without an input signal, the EA13 automatically enters low-power standby, reducing energy use and unnecessary operating time on the tubes.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAdjustable RGB lighting\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eLighting around the two front-panel knobs can be adjusted to suit the surrounding space and complement the warm amber glow of the vacuum tubes. The illumination can also be switched off when a more understated appearance is preferred.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePure Class-A push-pull vacuum tube amplifier\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e2 × SYLVANIA NOS PCF80 preamp tubes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e4 × JJ ELECTRONIC EL34 power tubes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUp to 28W + 28W speaker output\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCustom high-bandwidth, low-noise output transformers\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e40-step high-precision analog volume control\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDual-channel mechanical VU meters with LED backlighting\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e4 × RCA analog audio inputs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDedicated 4Ω and 8Ω speaker outputs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e6.35mm headphone output\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e12V Trigger In\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAutomatic low-power standby\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdjustable RGB knob lighting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDimensions: Approximately 16.9 × 13.3 × 5.7 in (430 × 339 × 145 mm)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: Approximately 39.0 lb (17.7 kg)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eColors: Black, silver\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay: Mechanical needle VU meters\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTube circuit: 2 × SYLVANIA PCF80, 4 × JJ ELECTRONIC EL34\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpeaker output at 4Ω, THD+N below 1%: At least 18W + 18W, 8.5Vrms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpeaker output at 4Ω, THD+N below 5%: At least 28W + 28W, 10.9Vrms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpeaker output at 8Ω, THD+N below 1%: At least 18W + 18W, 12.1Vrms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpeaker output at 8Ω, THD+N below 5%: At least 28W + 28W, 15.5Vrms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpeaker frequency response: 20Hz–60kHz, attenuation below 2.9dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpeaker dynamic range: At least 97dB, A-weighted\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpeaker SNR: At least 97dB, THD+N below 5%, A-weighted\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpeaker noise floor: Below 150μV, A-weighted\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRecommended headphone impedance: 16Ω–300Ω\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeadphone output at 300Ω, THD+N below 1%: At least 185mW + 185mW, 7.4Vrms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeadphone output at 32Ω, THD+N below 1%: At least 60mW + 60mW, 1.4Vrms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeadphone frequency response: 20Hz–65kHz, attenuation below 2.9dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeadphone dynamic range: At least 95dB, A-weighted\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeadphone SNR: At least 95dB, A-weighted\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeadphone noise floor: Below 25μV, A-weighted\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeadphone THD+N: Below 0.06% at 1kHz\/-16.3dB into 32Ω\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFIIO EA13 × 1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAC power cord × 1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eQuick start guide × 1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eScrewdriver × 1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eScrews × 2\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty card × 1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FiiO","offers":[{"title":"Black","offer_id":48144436756716,"sku":"APS-1405-1","price":769.99,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":48144436789484,"sku":"APS-1405-2","price":769.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0225\/2721\/3642\/files\/0039_e61cef92-3885-4c3d-976c-844f0aebafc8.jpg?v=1786382390","url":"https:\/\/apos.audio\/products\/fiio-ea13-full-size-vacuum-tube-power-amplifier","provider":"Apos","version":"1.0","type":"link"}