{"product_id":"leben-rs-28cx-phono-preamplifier","title":"Leben RS-28CX Phono Preamplifier","description":"\u003ch2 class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 128, 0);\"\u003eLeben RS-28CX Premium Tube Preamplifier\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 128, 0);\"\u003eHigh-End Dual-Chassis Tube Preamplifier With Cr-Type Zero-Feedback Phono Equalization\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eThe Leben RS-28CX is a high-end tube preamplifier designed for serious two-channel audio systems where musicality, transparency and refined analogue performance are essential. Combining a CR-type phono equalizer with a powerful SRPP tube line stage, the RS-28CX is engineered to deliver clear, dynamic and highly natural sound across a wide range of high-end audio systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eIts dual-chassis architecture separates the power supply from the main audio circuitry, helping protect the sensitive phono equalizer from unwanted interference generated by the power transformer. Carefully selected tubes and high-grade components complete a design focused on preserving the character and quality of the original music signal.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 128, 0);\"\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eCR-Type Zero-Feedback Phono Equalizer – Uses a carefully engineered CR-type RIAA equalization circuit without negative feedback for natural and highly resolving analogue reproduction.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eGE JAN-Standard 12AT7 Tubes – The phono equalizer is designed around carefully selected General Electric 12AT7 tubes built to J.A.N. standards.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eHigh-Output SRPP Line Stage – Uses GE 6CG7 dual-triode tubes in a powerful SRPP configuration for strong output capability and excellent amplifier drive.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eUp to 80 V Maximum Output – Designed to drive power amplifiers with low input sensitivity or demanding drive requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eSeparate Power Supply Chassis – Keeps the power transformer physically separated from the sensitive main audio circuitry.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003ePrecision RIAA Equalization – High-grade components help maintain RIAA curve accuracy within less than ±0.3 dB.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eVariable and Fixed Outputs – Provides flexible system integration, including the option to add a subwoofer.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eFive-Step Attenuator – Helps reduce residual noise when paired with high-sensitivity power amplifiers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eHand-Built Japanese Construction – Built with carefully selected components and Leben's distinctive tube-audio engineering philosophy.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 128, 0);\"\u003eCr-Type Zero-Feedback Phono Equalization\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eThe RS-28CX uses a CR-type phono equalization circuit without negative feedback. This design approach requires high gain and places greater importance on tube quality, as the characteristics of the tubes are directly amplified through the circuit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eLeben's CR-type design philosophy focuses on stable high-frequency performance and highly transparent analogue reproduction. The phono stage uses selected GE 12AT7 tubes and high-grade components, with the RIAA curve specified at less than ±0.3 dB.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 128, 0);\"\u003ePowerful Srpp Tube Line Stage\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eThe RS-28CX combines its sophisticated phono stage with a powerful line amplifier using GE 6CG7 dual-triode tubes in an SRPP configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eThe line stage can deliver up to 80 V of maximum output, giving the RS-28CX the ability to drive power amplifiers with low input sensitivity or limited driving capability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eFor systems using high-sensitivity power amplifiers, the five-step attenuator helps reduce residual noise and allows better system matching.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 128, 0);\"\u003eSeparate Power Supply Architecture\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eThe RS-28CX uses an independent power supply unit housed in a separate chassis. This design helps isolate the main audio circuitry from possible interference generated by the power transformer.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eSeparating the power supply from the main preamplifier chassis is particularly beneficial for the sensitive CR-type phono equalizer, supporting Leben's goal of preserving a clean and highly transparent signal path.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 128, 0);\"\u003eFlexible System Integration\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eThe RS-28CX provides both fixed and variable outputs for flexible integration into a wide range of high-end audio systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eThe two-output configuration also supports system expansion, including the addition of a subwoofer where required. The combination of high output capability, flexible attenuation and dual output options allows the RS-28CX to work with a wide variety of power amplifiers and system configurations.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 128, 0);\"\u003eFeatures\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eHigh-end dual-chassis tube preamplifier.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eCR-type zero-feedback phono equalizer.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eGE 12AT7 tubes for the phono stage.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eGE 6CG7 dual-triode tubes for the line stage.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eSRPP line-stage amplification.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eMaximum output of 80 V through variable and fixed outputs.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eSeparate independent power supply chassis.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eFive-step attenuator for system matching.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eHigh-grade components in critical audio circuits.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eNatural wood side panels.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003e30-minute muting function after power-on.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eHand-built in Japan.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 128, 0);\"\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eModel: RS-28CX\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eType: Tube Preamplifier with Phono Stage\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eTube Complement: 6CG7 (G.E.) × 2; 12AT7 (G.E.) × 2; 5Y3WGT × 1\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003ePhono Gain: 20.2 dB\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eRIAA Curve: Less than ±0.3 dB\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eMaximum Phono Input: 400 mV at 2 kHz\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eLine Gain: 25.2 dB\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EN\" style=\"color: rgb(255, 255, 255);\"\u003eMaximum Output: 80 V Variable \/ 80 V Fixed\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003e\u003cspan lang=\"EN\" style=\"mso-ansi-language: EN;\"\u003eOutput Impedance: 580 \u003c\/span\u003e\u003cspan lang=\"EL\" style=\"mso-ansi-language: EL;\"\u003eΩ\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EL\" style=\"color: rgb(255, 255, 255);\"\u003eResidual Noise: 0.03 mV\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EL\" style=\"color: rgb(255, 255, 255);\"\u003eMain Body Weight: 7.0 kg\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan lang=\"EL\" style=\"color: rgb(255, 255, 255);\"\u003ePower Supply Weight: 6.5 kg\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003e\u003cspan lang=\"EL\" style=\"mso-ansi-language: EL;\"\u003eMain Body Dimensions: 352 W \u003c\/span\u003e× 240 D × 175 H mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003ePower Supply Dimensions: 233 W × 240 D × 175 H mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003eIncluded Accessories: AC Power Cable and Power Supply Connecting Cable\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"MsoNormal\"\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003eIn The Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003eLeben RS-28CX Tube Preamplifier\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003eSeparate Power Supply Unit\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003eAC Power Cable\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003ePower Supply Connecting Cable\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: rgb(255, 255, 255);\"\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003eManufacturer's documentation and accessories as supplied\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"MsoNormal\"\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003eWhy Buy From Soundtrails\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003eA high-end preamplifier is the control centre of a serious two-channel system. Phono stage architecture, gain structure, output capability and system matching all play an important role in achieving the best performance from the connected source components and power amplifier.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003eAt SoundTrails, our Audio Video Architects help you design carefully matched high-fidelity systems around your listening preferences, room and equipment. From analogue source integration and preamplifier selection to power amplifier matching, speaker selection and complete two-channel system design, we help ensure that every component works together as part of a balanced and thoughtfully engineered system.\u003c\/span\u003e\u003cspan lang=\"EN\" style=\"mso-ansi-language: EN;\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"SoundTrails","offers":[{"title":"Default Title","offer_id":53791262408977,"sku":null,"price":780000.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/0208\/1041\/files\/leben-rs-28cx-tube-preamplifier-theaudioco-526_670x670_8c81807d-6e86-4325-95b6-13ec2cb65175.webp?v=1784442834","url":"https:\/\/soundtrails.in\/products\/leben-rs-28cx-phono-preamplifier","provider":"SoundTrails","version":"1.0","type":"link"}