{"product_id":"ladder-bach-ii-audio-preamplifier","title":"LADDER Bach II Audio Preamplifier","description":"\u003cp\u003e \u003c\/p\u003e\n \u003ch1\u003e\u003cstrong\u003eFully-balanced, Class-A preamplifier\u003c\/strong\u003e\u003c\/h1\u003e\n \u003cp\u003eThe Bach II is a fully-discrete, pure Class A, fully-balanced preamplifier built for systems that need clean switching, precise volume control, and flexible I\/O. You get two balanced XLR inputs plus a high-level RCA input, then both XLR and RCA outputs for feeding power amps or active speakers. A 60-step relay attenuator keeps channel balance locked in, plus global voltage power and remote control for daily use.\u003c\/p\u003e\n \u003ch2\u003e\u003cstrong\u003eBalanced connectivity for real-world systems\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp\u003eThe Bach II gives you 2 XLR balanced inputs and 1 high-level RCA input, plus outputs on both XLR and RCA. Balanced lines help reject noise over longer cable runs.\u003c\/p\u003e\n \u003ch2\u003e\u003cstrong\u003ePure Class A, fully discrete signal stage\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp\u003eThis is a Class-A, fully-discrete design with a fully-balanced output circuit. Class A means the output devices stay conducting rather than switching on and off, which is one less variable in the signal path. The balanced architecture focuses on low noise and strong channel separation, which is useful when you listen at lower levels and still want space and placement to hold steady.\u003c\/p\u003e\n \u003ch2\u003e\u003cstrong\u003e60-step relay attenuator volume control\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp\u003eThe Volume is handled by a microprocessor-controlled relay step attenuator with precision-matched resistors. The benefit here isn’t “more steps” but repeatability and channel matching. Left and right stay aligned as you turn the knob, so the center images stay centered and small level changes don’t skew the stage left or right.\u003c\/p\u003e\n \u003ch2\u003e\u003cstrong\u003ePower filtering that keeps the background quiet\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp\u003eInside, an 80W toroidal transformer feeds a low-noise linear supply with a capacitor bank and layered filtering using ELNA electrolytic capacitors and WIMA capacitors. In practice, background noise is controlled, so quiet passages don’t get smudged by power-related issues. \u003c\/p\u003e\n \u003ch2\u003e\u003cstrong\u003eMinimal controls that stay out of your way\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp\u003eTwo large knobs handle what you need most: power\/source\/mute on one side, volume on the other. Laser-engraved labeling is meant to stay readable long-term. The front display keeps status clear at a glance, without adding a row of extra buttons.\u003c\/p\u003e\n \u003ch2\u003e\u003cstrong\u003eGlobal voltage power input\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp\u003eThe power input auto-identifies voltage, with no manual switching (it's built for 100–240VAC, 50\/60Hz). If you move between regions or keep a travel rig, it’s one less thing to worry about.\u003c\/p\u003e\n \u003ch2\u003e\u003cstrong\u003eCompact footprint for a desktop or rack\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp\u003eThe Bach II is reasonably sized for tight spaces. The chassis measures 13.23 in × 11.97 in × 2.60 in (336 mm × 304 mm × 66 mm), with a net weight of 14.33 lb (6.5 kg).\u003c\/p\u003e\n \u003ch3\u003e\u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eFully balanced architecture with XLR in\/out\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003ePure Class A, fully discrete circuitry\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003e2 XLR inputs plus 1 high-level RCA input\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eXLR and RCA outputs for flexible system matching\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003e60-step microprocessor-controlled relay attenuator\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003ePrecision-matched resistors for channel balance\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003e80W toroidal transformer with layered power filtering\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eRemote control support\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eGlobal voltage power input with automatic identification\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eType: audio preamplifier\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eInputs: 2 × XLR balanced, 1 × RCA high-level\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eOutputs: 1 × XLR balanced (L\/R), 1 × RCA (L\/R)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eOutput voltage: XLR 4.0 Vrms, RCA 2.0 Vrms\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eAC power requirements: 100–240VAC, 50\/60Hz (global voltage)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003ePower supply voltage identification: ~115V \/ 230V (intelligent automatic identification)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eWhole machine power consumption: 10 W\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eStandby power: \u0026lt; 1 W\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eNormal operation: ≤ 25 W\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eFrequency response: 10Hz–80kHz (+1\/−1dB)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDistortion: 0.0005% (1kHz, normal operating conditions)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eSignal-to-noise ratio: \u0026gt;110dB (A-weighted)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eChannel separation: \u0026gt;105dB (A-weighted)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eStereo crosstalk: −110dB\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDimensions: 13.23 in × 11.97 in × 2.60 in (336 mm × 304 mm × 66 mm)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003ePackaging dimensions: 20.47 in × 16.34 in × 4.53 in (520 mm × 415 mm × 115 mm)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eNet weight: 14.33 lb (6.5 kg)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eGross weight: 21.38 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\u003eBach II preamplifier\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eRemote control\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDocumentation\u003c\/li\u003e\n \u003c\/ul\u003e","brand":"LADDER","offers":[{"title":"Black","offer_id":46866188370095,"sku":"APS-1221-1","price":945.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":46866188402863,"sku":"APS-1221-2","price":945.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/apos-audio-ladder-headphone-amp-ladder-bach-ii-audio-preamplifier-1214393184_82651c12-3688-4a13-a0ab-661a6b39b14c.jpg?v=1777716154","url":"https:\/\/freshized.com\/products\/ladder-bach-ii-audio-preamplifier","provider":"Freshized","version":"1.0","type":"link"}