{"product_id":"ladder-chopin-desktop-dac-amp","title":"LADDER Chopin Desktop R2R Pre-amplifier","description":"\u003ch1\u003e\u003cstrong\u003efully-balanced Class-A Pre-amplifier\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe Ladder Chopin is a fully discrete, pure Class-A line-stage preamplifier designed for transparent analog signal control. Built around a microprocessor-controlled 60-step relay attenuator, it combines precision channel matching with low distortion, balanced and single-ended connectivity, and a robust linear power supply. Its compact aluminum chassis is available in silver or black and is designed to integrate easily into high-performance two-channel audio systems.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePrecision relay volume control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Chopin uses a microprocessor-controlled, relay-based 60-step attenuator instead of a conventional potentiometer. Precision-matched resistors maintain accurate channel balance throughout the volume range while reducing distortion and preserving signal integrity.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePure Class-A fully discrete circuitry\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA fully-discrete Class-A analog circuit provides unity gain with low distortion and wide bandwidth. The differential output stage offers balanced operation with improved common-mode noise rejection for long cable runs and compatible balanced components.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eBalanced and single-ended connectivity\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe rear panel includes two balanced XLR inputs and one RCA input, allowing easy integration with multiple analog sources. Balanced XLR and single-ended RCA outputs provide flexibility when connecting power amplifiers or downstream components.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eLinear power supply\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA 65W toroidal transformer works alongside multiple independent regulated power supplies and premium capacitors to deliver stable, low-noise power to the analog circuitry.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCompact aluminum construction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe aluminum alloy enclosure measures just 13.2 x 14.7 x 2.6 inches (336 × 374 × 66 mm), providing a space-efficient footprint without sacrificing internal component layout or power supply capacity.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFront panel operation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe front panel combines a clear display with simple controls for power, input selection, mute, and volume adjustment. A remote control is included for convenient operation from the listening position.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePure Class-A fully discrete analog line stage\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFully-balanced differential circuit design\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e60-step relay-based attenuator with microprocessor control\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTwo balanced XLR inputs and one RCA input\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and RCA outputs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e65W toroidal transformer with eight regulated power supplies\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePrecision-matched resistors for accurate channel balance\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRemote control included\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAluminum alloy chassis\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAvailable in silver or black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct: Ladder Chopin\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eType: Fully discrete Class-A line-stage preamplifier\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCircuit topology: Fully-balanced differential\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGain: Unity gain (0dB)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInputs: 2 x XLR, 1 x RCA\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutputs: XLR: 4.0Vrms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutputs: RCA: 2.0Vrms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInput impedance: 60kΩ balanced, 12.2kΩ single-ended\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutput impedance: 400Ω balanced, 200Ω single-ended\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz–80kHz (-0.3dB)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTHD+N: \u0026lt;0.0006%\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSignal-to-noise ratio: 120dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDynamic range: \u0026gt;121dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eStereo crosstalk: -110dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower consumption: 1W idle, 20W operating\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower requirement: 100–240VAC, 50\/60Hz\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eChassis material: Aluminum alloy\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: 13.2 x 14.7 x 2.6 inches (336 × 374 × 66 mm)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNet weight: 14.3 lb (6.5 kg)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eShipping weight: 21.4 lb (9.7 kg)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: 12 months\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\u003eLadder Chopin preamplifier\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRemote control\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAC power cable\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUser documentation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LADDER","offers":[{"title":"Default Title","offer_id":47972859248876,"sku":"APS-1373-1","price":1545.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0225\/2721\/3642\/files\/4934e1adc1cd9c08206798ac69367973.png?v=1784561331","url":"https:\/\/apos.audio\/products\/ladder-chopin-desktop-dac-amp","provider":"Apos","version":"1.0","type":"link"}