{"product_id":"pathos-inpol-ear-reference-headphone-amplifier","title":"Pathos InPol Ear Reference Headphone Amplifier","description":"\u003ch1\u003ePathos InPol Ear Reference Headphone Amplifier\u003c\/h1\u003e\n\u003cfigure style=\"text-align: center;\"\u003e\n\u003cblockquote\u003e\n\u003cspan\u003e“\u003c\/span\u003eInsanely great.\u003cspan\u003e”\u003c\/span\u003e\n\u003c\/blockquote\u003e\n\u003cfigcaption class=\"source\"\u003e— STEVE GUTTENBERG, AUDIOPHILIAC\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eA class-A hybrid with two Electro-Harmonix 6922's and Pathos' InPol circuit\u003c\/h3\u003e\n\u003cp\u003eInPol Ear is a pure class-A integrated headphone amplifier, with a fully balanced latest generation double InPol. It features two balanced and one unbalanced output and allows the addition of the HiDac Mk2 converter. The balanced output offers 10 W into 16 Ohm, and the single-ended, 6 W into 16 Ohm.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eInPol (\u003c\/span\u003eInseguitore\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003ePompa\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eLineare\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e- Linear Pump Follower) is a Pathos patented system that allows for much greater output in pure Class A. This fully balanced circuit design uses a single solid-state component in follower configuration, with a\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003ehigh-current\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003egain and voltage gain together. Think of the directness of SET with the control and damping of solid-state. InPol technology allows the tube input stage to effectively drive your speakers with no further amplification. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAn optional HiDac Mk2 converter offers a high-quality onboard DAC with digital inputs. \u003c\/p\u003e\n\u003cp\u003eThe InPol Ear has Pathos' eye-catching (and highly effective) logo-shaped heatsinks, and comes in a range of center panel options.\u003c\/p\u003e\n\u003ch4\u003e\"The only thing I regret is not having bought this amplifier 3-4 years ago!!\"\u003c\/h4\u003e\n\u003cp\u003eRead the detailed, unsolicited customer reviews below. This amp is truly beloved, and always steals the show at our tables at CanJam or RMAF or Axpona. If you're not able to visit us, look out for the next show we're attending and bring your favorite headphones to listen to this Italian beauty!\u003c\/p\u003e\n\u003ch4\u003eWhat is InPol?\u003c\/h4\u003e\n\u003cp\u003eWhen you listen to music, you’re not just hearing notes—you’re experiencing emotion. That’s the promise of Pathos’ revolutionary InPol technology: a design created to deliver all of that emotion.\u003c\/p\u003e\n\u003cp\u003eTraditional amplifier designs force a compromise between the warmth of tubes and the control of solid-state. InPol (short for Inseguitore Pompa Lineare, or Linear Pump Tracker) erases that compromise. It’s a patented, fully balanced, class-A topology where a single triode stage handles all voltage amplification—and maintains 100% of its sonic signature—while the InPol circuit delivers the current gain needed to drive even the most demanding speakers effortlessly.\u003c\/p\u003e\n\u003ch4\u003eFeatures of InPol\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e1. Pure Class-A with No Distortion\u003c\/strong\u003e\u003cbr\u003eInPol doesn’t dilute or \"correct\" the tube signal with negative feedback or transistor interference. Instead, it uses a specially designed current amplifier that mirrors the exact character of the tube stage, with zero phase shift or tonal coloration. The result? The harmonic beauty and liquidity of tubes, with the authority and grip of solid state.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Emotionally Engaging Sound\u003c\/strong\u003e\u003cbr\u003eThere’s a reason Pathos fans describe InPol amps as “addictive.” Music flows with natural presence, dimensionality, and richness—an emotional connection that standard designs just can’t replicate. Voices are human, strings are alive, and the soundstage breathes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Exclusive, Patented Technology\u003c\/strong\u003e\u003cbr\u003eOnly Pathos builds amplifiers like this. The InPol circuit is a patented innovation, handcrafted in Italy and unavailable from any other brand. This isn’t another copycat design—it’s a true original for those who want something extraordinary.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. The Best of Both Worlds\u003c\/strong\u003e\u003cbr\u003eTube magic meets muscle. The warmth and finesse of tubes drive the musical expression, while the InPol stage delivers the speed, control, and punch that brings complex music to life. It’s a marriage of passion and precision.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. Class-A with Efficiency\u003c\/strong\u003e\u003cbr\u003eTraditional class-A amps waste enormous energy as heat. InPol’s design cleverly maximizes thermal and electrical efficiency, delivering the full benefits of class-A operation with far fewer compromises—proving you can have purity and performance in one stunning machine.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Reference stereo integrated amplifier for headphones. Pure Class A double INPOL technology\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Power (Unbalanced, Balanced)\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e32 Ω:\u003c\/strong\u003e 3 W, 10 W\u003cbr\u003e\u003cstrong\u003e50 Ω:\u003c\/strong\u003e 1.9 W, 6.4 W\u003cbr\u003e\u003cstrong\u003e120 Ω:\u003c\/strong\u003e 800 mW, 2.7 W\u003cbr\u003e\u003cstrong\u003e300 Ω:\u003c\/strong\u003e 320 mW, 1 W\u003cbr\u003e\u003cstrong\u003e600 Ω:\u003c\/strong\u003e 160 mW, 533 mW\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTube Type:\u003c\/strong\u003e 2 x 6922 Electro-Harmonix\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eOutput Impedance (Unbalanced, Balanced):\u003c\/strong\u003e 0.45 Ohm, 0.9 Ohm\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 2 Hz – 200 kHz ± 0.5 db\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eInput Sensitivity:\u003c\/strong\u003e 2.2 V RMS\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 100 kOhm\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eOutput Polarity:\u003c\/strong\u003e Selectable by remote control\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eVolume Regulator:\u003c\/strong\u003e 2 x Burr Brown PGA2310 (180 steps 0.5 dB)\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMax Input Voltage:\u003c\/strong\u003e 4.4 V RMS\u003cbr\u003e\u003cstrong\u003eMax Output Voltage (Unbalanced, Balanced):\u003c\/strong\u003e 10 V RMS, 20 V RMS\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003ePreamplifier Gain:\u003c\/strong\u003e 9 db\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eOutputs:\u003c\/strong\u003e 1 x balanced XLR, 1 x RCA\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eConnections\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003eAnalog Line Inputs:\u003c\/strong\u003e 1 x balanced XLR, 4 x RCA \u003cbr\u003e\u003cstrong\u003eDigital Inputs (Optional HiDac Mk2 board required):\u003c\/strong\u003e 1 x USB B, 1 x S\/PDIF coaxial, 1 x S\/PDIF optical\u003cbr\u003e\u003cstrong\u003eOutputs:\u003c\/strong\u003e 1 x pre out RCA (pre-output phase can be selected), 1 x pre out balanced XLR, 1 x 6.3 mm headphone, 2 x 4 pin XLR\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 110 W\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eDimensions (WHD):\u003c\/strong\u003e 14.56\" x 7\" x 11\" \u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e  27.5 lb. (12.5 kg)\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Pathos","offers":[{"title":"Matte Metallic Black","offer_id":22482051891260,"sku":"PA-EAR-MB","price":5595.0,"currency_code":"USD","in_stock":true},{"title":"Lacquered Black","offer_id":22558514053180,"sku":"PA-EAR-LB","price":6195.0,"currency_code":"USD","in_stock":true},{"title":"Lacquered White","offer_id":22558514118716,"sku":"PA-EAR-LW","price":6195.0,"currency_code":"USD","in_stock":true},{"title":"Lacquered Red","offer_id":22558514184252,"sku":"PA-EAR-LR","price":6195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/DSC_9506.jpg?v=1741631743","url":"https:\/\/upscaleaudio.pro\/products\/pathos-inpol-ear-reference-headphone-amplifier","provider":"Upscale Audio","version":"1.0","type":"link"}