{"product_id":"cr10","title":"CR10","description":"\u003cp\u003eDirect-Heated Purity. Transformer-Coupled from Input to Output.\u003c\/p\u003e\n\u003cp\u003eThe CR10 is a fully analog 3A\/110B tube preamplifier built around a separate power-supply architecture, direct-heated triodes, and Raphaelite’s fully transformer-coupled signal topology. A precision-matched pair of vintage British STC 3A\/110B tubes forms the heart of the amplification stage, complemented by a JJ GZ34S rectifier, a 6C19 regulator tube, and a Western Electric 420A driver tube. The 3A\/110B sockets can also be configured for direct use with WE101-family tubes, offering enthusiasts an additional path for tube exploration.\u003c\/p\u003e\n\u003cp\u003eAt the center of the CR10 are custom EI transformers wound with 5N single-crystal copper and Japanese EI cores. Engineered for exceptionally wide bandwidth and natural tonal flow, the transformer-coupled input and output stages preserve fine detail and harmonic texture while maintaining the smooth, refined treble associated with Raphaelite’s reference transformer designs. For systems pursuing the highest level of performance, an optional 5N single-crystal silver output transformer upgrade is also available.\u003c\/p\u003e\n\u003cp\u003eThe CR10 employs no global negative feedback, allowing the direct-heated tube stage and transformer network to define the amplifier’s character without corrective feedback loops. A fully analog signal path, ALPS RK27 dual-gang carbon-film volume control, custom coupling capacitors, EIZZ RCA connectors, and NEUTRIK silver-plated XLR connectors complete a design focused on purity, immediacy, and musical expression.\u003c\/p\u003e\n\u003cp\u003eNoise control is equally fundamental to the design. The power supply is housed in a completely separate chassis and uses tube rectification with a linear power architecture to isolate sensitive signal circuitry from power-supply interference. Tube vibration isolation, chassis shielding, floating-ground implementation, soft-start circuitry, and output protection further reduce mechanical vibration, electromagnetic interference, and ground-loop noise—particularly important when working with highly sensitive direct-heated tubes.\u003c\/p\u003e\n\u003cp\u003eAvailable in white, grey, or military green, the CR10 combines its technical architecture with a distinctly purposeful aesthetic. The military-green version features a durable baked finish, complemented by a brass nameplate and CNC-machined brass\/POM control knobs. Three RCA inputs and one balanced XLR input provide flexible source connectivity, while both RCA and balanced XLR outputs allow seamless integration into a wide range of reference systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eProduct Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Fully Analog Tube Preamplifier\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eModel:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e CR10\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCircuit Architecture:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Direct-Heated Tube, Fully Transformer-Coupled Input \u0026amp; Output\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFeedback:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Zero Global Negative Feedback\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMain Tubes:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 2 × STC 3A\/110B\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAlternative Main Tube Compatibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e WE101 family with appropriate socket configuration\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDriver Tube:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1 × WE420A \/ 5755\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRegulator Tube:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1 × 6C19\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRectifier Tube:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1 × GZ34; compatible with 5AR4, 5U4G and 274B\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eVoltage Gain:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 12dB at 1kHz \/ 600Ω load\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eVoltage Gain:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 16dB at 1kHz \/ 10kΩ load\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTHD:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ≤0.6% at 2V output \/ 600Ω load\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTHD:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ≤0.15% at 2V output \/ 10kΩ load\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSignal-to-Noise Ratio:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 88dB\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eInput Impedance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 100kΩ\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRCA Output Impedance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 600Ω\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eBalanced XLR Output Impedance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 150Ω + 150Ω\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFrequency Response:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 5Hz–6.35kHz, ±3dB at 2V*\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTransformers:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 5N Single-Crystal Copper Fully Coupled EI Transformers with Japanese EI Cores\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eOptional Upgrade:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 5N Single-Crystal Silver Output Transformers\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eVolume Control:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ALPS RK27 100kΩ × 2 Carbon-Film Potentiometer\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eInputs:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 3 × RCA, 1 × XLR\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eOutputs:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1 × RCA, 1 × XLR\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eConnectors:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e EIZZ RCA \/ NEUTRIK Silver-Plated XLR\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePower Supply:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Separate Tube-Rectified Linear Power Supply\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePhase Control:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Switchable Phase\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAC Input:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 220–230V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePower Consumption:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 44W\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eInsulation Resistance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 200MΩ at DC 2000V \/ 1 min\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePreamplifier Chassis:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 410 × 170 × 235mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePower Supply Chassis:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 410 × 170 × 235mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePreamplifier Net Weight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 7.1kg\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePower Supply Net Weight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 8.1kg\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAvailable Finishes:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e White \/ Grey \/ Military Green\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Raphaelite","offers":[{"title":"Default Title","offer_id":67691441226006,"sku":"CR10","price":35500.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/8516\/7382\/files\/A_2781667e-afc8-42f6-9b23-5a79e26c632a.jpg?v=1791777378","url":"https:\/\/aeonstage.com\/products\/cr10","provider":"Aeon Stage","version":"1.0","type":"link"}