{"product_id":"musical-fidelity-x-tube","title":"Musical Fidelity X-Tube Tube Output Buffer","description":"\u003ch1\u003eMusical Fidelity X-Tube Tube Buffer\u003c\/h1\u003e\n\u003ch3\u003ePure Class A tube output buffer with 2x E88CC triodes for enhancing modern digital and analog sources\u003c\/h3\u003e\n\u003cp\u003eThe Musical Fidelity X-Tube is a modern reimagining of the classic X-series buffer, built into the newly updated X-profile aluminum die-cast chassis. The X-Tube is designed as an intermediary stage between source and amplifier, extending your signal chain and adding tube-like refinement without cluttering your rack with external power supplies or extra boxes.\u003c\/p\u003e\n\u003cp\u003eAt its heart is a pure class-A triode line stage based on two 6922\/E88CC tubes, arranged so that both process the entire signal in single-ended fashion. This topology, combined with a clean, high input impedance and low output impedance, is engineered to maximize signal transfer while keeping distortion, noise, and frequency response deviations vanishingly low. The result is a presentation with greater depth, space, and harmonic richness, but underpinned by measurements that rival or exceed many solid-state line stages.\u003c\/p\u003e\n\u003cp\u003eConnectivity is straightforward: 1x RCA input, 1x RCA output, plus an RCA bypass for easy comparison or system integration. Use the X-Tube between a streamer, DAC, CD player, or phonostage and your integrated or power amplifier, or between a preamp and power amp as an impedance-matching stage. It can also sit between an A\/V receiver and multichannel power amp to elevate the front left\/right channels for serious stereo listening. A direct IEC mains input (AC 100–230 V) keeps the setup clean and flexible in a wide range of systems.\u003c\/p\u003e\n\u003ch4\u003eThe Design\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSingle-Ended Tube Architecture:\u003c\/b\u003e The X-Tube runs both 6922\/E88CC tubes in a single-ended configuration, letting each tube handle the full signal for speed and low distortion. This design preserves transient detail and adds a touch of triode smoothness\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImpedance Matching:\u003c\/b\u003e Tubes naturally present high input impedance, reducing loading on the source and improving overall signal transfer. This helps maintain clarity over long cable runs or with difficult component pairings\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSystem Isolation:\u003c\/b\u003e A tube buffer can act as a protective interface between components, reducing the influence of reactive loads. This extra stability helps prevent noise, oscillation, and other system-level issues\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHarmonic Character:\u003c\/b\u003e Tube stages introduce subtle even-order harmonics that listeners often perceive as warmth or richness. The effect is gentle but can add depth and texture without altering frequency balance\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWarmer, More Engaging Sound:\u003c\/b\u003e Tubes emphasize even-order harmonics, creating a smoother and more natural presentation than many solid-state designs. This warmth can make long listening sessions more inviting\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImproved Dynamics and Transients:\u003c\/b\u003e The X-Tube’s triode topology responds quickly to changes in the signal, preserving impact and microdynamics. Music feels more lifelike and energetic as a result\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eReduced Listening Fatigue:\u003c\/b\u003e Tube buffers avoid the sharpness or glare that can creep into some systems, especially with digital sources. Their gentler harmonic profile keeps the sound comfortable over time\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEnhanced Sense of Space:\u003c\/b\u003e Many listeners hear greater dimensionality and ambient detail when tubes are introduced into the chain. This added “air” can make recordings feel more open and immersive\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eType:\u003c\/b\u003e Pure Class A triode tube output buffer \/ line stage\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTubes:\u003c\/b\u003e 2x 6922\/E88CC triode tubes\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFrequency Response:\u003c\/b\u003e 20 Hz–80 kHz (+0, –0.3 dB)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTHD:\u003c\/b\u003e \u0026lt; 0.003% (10 Hz–20 kHz)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSNR:\u003c\/b\u003e \u0026gt; 96 dB unweighted (ref. full output)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eCrosstalk:\u003c\/b\u003e \u0026gt; 95 dB (20 Hz–20 kHz)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eGain:\u003c\/b\u003e 1 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Impedance:\u003c\/b\u003e 470 kOhms\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Impedance:\u003c\/b\u003e \u0026lt; 33 Ohms\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInputs:\u003c\/b\u003e 1x RCA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eBypass:\u003c\/b\u003e 1x RCA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutputs:\u003c\/b\u003e 1x RCA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMains Input:\u003c\/b\u003e AC 100–230 V, 50\/60 Hz IEC C14 socket\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePower Consumption (Standby):\u003c\/b\u003e \u0026lt; 0.25 W\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimensions (WHD):\u003c\/b\u003e 4.25\" x 4.13\" x 10.79\" (108 x 105 x 274 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 5.05 lb. (2.29 kg)\u003c\/p\u003e","brand":"Musical Fidelity","offers":[{"title":"Default Title","offer_id":52350854725816,"sku":"MUFXTUBE","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/MF-X-Tube-front.png?v=1765413121","url":"https:\/\/upscaleaudio.pro\/products\/musical-fidelity-x-tube","provider":"Upscale Audio","version":"1.0","type":"link"}