{"product_id":"topping-pre900-fully-balanced-preamplifier","title":"TOPPING PRE900 Fully Balanced Desktop Preamplifier with 0.1dB Relay Volume Control, 151dB SNR \u0026 XLR Balanced Outputs","description":"\u003cp\u003e\u003cstrong\u003eTOPPING PRE900 Fully Balanced Desktop Preamplifier — Reference-Grade Preamplification for Your Flagship System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe TOPPING PRE900 is a fully balanced desktop preamplifier engineered for dedicated two-channel systems and flagship headphone stacks. Built around a four-channel reference-grade amplification circuit with a true end-to-end differential design, it pairs a 0.1 dB precision relay volume control, three balanced combo inputs, one pair of XLR balanced outputs, and fully independent digital\/analog power supplies with measured performance of 0.00005% THD+N and 151 dB SNR. A 2.0-inch high-definition color display, touch controls, and a CNC-machined aluminum remote complete a preamplifier that is as pure in form as it is in sound.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFull-Path Balanced Architecture\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe PRE900 employs a four-channel reference-grade amplification circuit that is fully balanced in every stage — a true end-to-end differential signal path from input to output. Left and right channels are physically isolated to the highest degree, effectively suppressing noise and electromagnetic interference so the signal you feed in emerges exceptionally pure and pristine.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIndependent Power Supplies\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDigital and analog circuitry are powered completely independently, eliminating crosstalk at the source. Even at high dynamic output the noise floor remains imperceptible: the background stays pitch-black and every musical detail stays vividly alive.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e0.1 dB Precision Relay Volume Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA relay array combined with a high-precision resistor network delivers 1,000 steps of volume adjustment in precise 0.1 dB increments, with every step switching smoothly and naturally. Channel crosstalk is held below −150 dB, keeping left and right channels perfectly synchronized at any volume. Throughout the entire adjustment range, only the volume changes — tonal character remains completely consistent.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePowerful Headroom and Pristine Signal\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith an output swing of up to 69 Vpp and gain up to 19.9 dB, the PRE900 sails through explosive transient peaks without clipping, adding power and dynamics to your listening. Its actual noise floor is below 0.3 µVrms at low gain, so even the most delicate signals are amplified without audible noise, preserving integrity, stability, and transparency.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDriven by Performance, Proven by Measurement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe PRE900’s engineering is validated by APx555B measurements: THD+N of 0.00005% at 1 kHz (A-weighted), THD below 0.00003% from 20 Hz to 20 kHz, and 151 dB SNR and dynamic range. What you hear is not the sound of the preamplifier, but the sound of the source itself — only with greater presence, tension, and composure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSafe Volume Mode\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSet a preferred safe volume level and the PRE900 automatically lowers the volume to that preset during power-on and input switching, protecting you and your speakers or headphones from unexpected loud bursts. The user-adjustable range spans −80.0 dB to 0.0 dB with a −30.0 dB default.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMultiple Sources, Seamless Switching\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThree sets of stereo balanced combo inputs (XLR and 6.35 mm TRS) offer broad compatibility with professional equipment and high-end audio sources. All input connectors use Neutrik combo sockets for stable, reliable connections that meet the demands of high-standard audio systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFocused Output for One Dedicated System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA single pair of XLR balanced outputs ensures the most optimized signal path, while 12V trigger input and output let the PRE900 power on and off in sync with upstream and downstream devices for one-touch system control.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade for Your Flagship System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTogether with the ultra-flagship D900 DAC and A900 headphone amplifier, the PRE900 completes a true flagship stack — from digital to analog, from signal processing to powerful drive, every stage is elevated for a Hi-End listening experience. It inherits the clean, flowing edge-line design of TOPPING’s flagship 900 Series, with sharp yet restrained lines that create seamless visual harmony when stacked.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eResponsive Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 2.0-inch high-definition color display with 9 selectable background colors adapts perfectly to your visual preferences. Three touch buttons on the right work seamlessly with the multi-function knob, and a single touch switches display modes between playback information, FFT, and VU meter views.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInfrared Remote Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe remote control’s main body is crafted from a single block of high-strength aluminum alloy using precision CNC machining, followed by fine sandblasting for a refined finish — full control from your listening seat with a component that matches the PRE900’s build quality.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e TOPPING PRE900 Fully Balanced Preamplifier\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Architecture:\u003c\/strong\u003e Four-Channel Fully Balanced, True End-to-End Differential\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume Control:\u003c\/strong\u003e 0.1 dB Precision Relay, 1,000-Step\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N (1 kHz, A-weighted):\u003c\/strong\u003e 0.00005%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD (20 Hz–20 kHz, 90kBW):\u003c\/strong\u003e 0.00003%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR (Max Output, 1 kHz, A-weighted):\u003c\/strong\u003e 151 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Range (1 kHz, A-weighted):\u003c\/strong\u003e 151 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20 Hz–40 kHz (±0.05 dB); 20 Hz–100 kHz (±0.1 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Level:\u003c\/strong\u003e 69 Vpp (Low Gain), 65 Vpp (Medium Gain), 65 Vpp (High Gain)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActual Noise Level (A-weighted):\u003c\/strong\u003e \u0026lt;0.3 µVrms (Low), \u0026lt;0.9 µVrms (Medium), \u0026lt;2.3 µVrms (High)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Crosstalk (1 kHz):\u003c\/strong\u003e −150 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Sensitivity:\u003c\/strong\u003e 25.3 Vrms (Low), 7.1 Vrms (Medium), 2.3 Vrms (High)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain:\u003c\/strong\u003e 0 dB (Low), +10.4 dB (Medium), +19.9 dB (High)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 20 kΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Impedance:\u003c\/strong\u003e 100 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 3 x Stereo Balanced Combo (XLR + 6.35 mm TRS, Neutrik)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e 1 x Pair XLR Balanced Preamp Output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrigger:\u003c\/strong\u003e 12V Trigger Input and Output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e Independent Digital and Analog (Mean Well Modules)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 2.0-inch HD Color Display (9 Background Colors, FFT \/ VU Modes)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Control:\u003c\/strong\u003e CNC-Machined Aluminum Infrared Remote\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 33.0 x 20.0 x 5.7 cm (13.0 x 7.9 x 2.2 in)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTOPPING PRE900 Preamplifier\u003c\/li\u003e\n\u003cli\u003eInfrared Remote Control\u003c\/li\u003e\n\u003cli\u003eUser Documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-pure-in-form-pure-in-sound-hero.jpg?v=1787101494\" alt=\"TOPPING PRE900 Pure In Form Pure In Sound Hero Image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-four-channel-fully-balanced-architecture.jpg?v=1787101495\" alt=\"TOPPING PRE900 Four-Channel Fully Balanced Architecture Overview\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-full-path-balanced-architecture-circuit.jpg?v=1787101495\" alt=\"TOPPING PRE900 Full-Path Balanced Architecture Circuit Board\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-independent-power-supplies.jpg?v=1787101495\" alt=\"TOPPING PRE900 Independent Power Supplies Design\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-0-1db-precision-relay-volume-control.jpg?v=1787101495\" alt=\"TOPPING PRE900 0.1dB Precision Relay Volume Control\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-focused-on-music-edge-line-design.jpg?v=1787101494\" alt=\"TOPPING PRE900 Focused On Music Edge-Line Design\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-powerful-headroom-pristine-signal.jpg?v=1787101495\" alt=\"TOPPING PRE900 Powerful Headroom And Pristine Signal\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-driven-by-performance-measurement.jpg?v=1787101495\" alt=\"TOPPING PRE900 Driven By Performance And Measurement Results\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-safe-volume-mode.jpg?v=1787101494\" alt=\"TOPPING PRE900 Safe Volume Mode Settings\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-multiple-sources-seamless-switching.jpg?v=1787101495\" alt=\"TOPPING PRE900 Multiple Sources Seamless Switching Neutrik Combo Inputs\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-focused-xlr-balanced-output-12v-trigger.jpg?v=1787101495\" alt=\"TOPPING PRE900 Focused XLR Balanced Output And 12V Trigger\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-made-for-flagship-900-series-stack.jpg?v=1787101495\" alt=\"TOPPING PRE900 Made For Flagship 900 Series Stack\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-responsive-control-color-display.jpg?v=1787101495\" alt=\"TOPPING PRE900 Responsive Control Color Display FFT And VU Meter\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-cnc-aluminum-infrared-remote-control.jpg?v=1787101495\" alt=\"TOPPING PRE900 CNC Aluminum Infrared Remote Control\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-interfaces-and-buttons-diagram.jpg?v=1787101494\" alt=\"TOPPING PRE900 Interfaces And Buttons Diagram\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-package-contents-accessories.jpg?v=1787101494\" alt=\"TOPPING PRE900 Package Contents And Accessories\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-technical-specifications-chart.jpg?v=1787101494\" alt=\"TOPPING PRE900 Technical Specifications Chart\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-snr-dynamic-range-measurement.jpg?v=1787101495\" alt=\"TOPPING PRE900 SNR And Dynamic Range Measurement Screenshots\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-thd-frequency-response-fft-measurement.jpg?v=1787101494\" alt=\"TOPPING PRE900 THD Frequency Response And FFT Measurement\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-imd-multitone-measurement.jpg?v=1787101494\" alt=\"TOPPING PRE900 IMD And Multitone Measurement Charts\"\u003e\u003c\/p\u003e","brand":"TOPPING","offers":[{"title":"Default Title","offer_id":48840959066304,"sku":"10019564","price":11988.09,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-pre900-fully-balanced-preamplifier-flagship-stack-d900-dac.jpg?v=1787101534","url":"https:\/\/hifichic.com\/products\/topping-pre900-fully-balanced-preamplifier","provider":"HIFICHIC","version":"1.0","type":"link"}