{"product_id":"apos-certified-topping-dx9-discrete-dac-amp","title":"TOPPING DX9 Discrete DAC\/Amp (Apos Certified)","description":"\u003ch1\u003e\u003cstrong\u003eThe future of discrete 1-bit design\u003c\/strong\u003e\u003c\/h1\u003e\n \u003cp\u003eA fully balanced DAC and headphone amplifier made for those who build their listening chains around precision. The DX9 Discrete is a rethinking of Topping’s flagship architecture from the ground up. Its self-developed 16-element PSRM 1-bit DAC eliminates conventional chip limitations, delivering micro-detail and tonal accuracy that extend deep into the noise floor. The six-channel discrete NFCA headphone amplifier pushes 7,080mW ×2 into 32Ω loads with near-zero distortion, while the ten-band PEQ and fully-balanced hybrid relay volume control let you tailor your playback with surgical control. Use it as a transparent DAC for active monitors, a powerful headphone amplifier for high-impedance cans, or a pristine preamp for your main system.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\u003cstrong\u003eDX9 Discrete – What’s New? \u003c\/strong\u003e\u003c\/h2\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDX9 Discrete\u003c\/th\u003e\n \u003cth\u003eDX9\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eDAC Architecture\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003e16-Element PSRM\u003c\/td\u003e\n \u003ctd\u003eAK4499EQ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eTHD+N @1kHz (A-wt)\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003e\u0026lt;0.00006%\u003c\/td\u003e\n \u003ctd\u003e\u0026lt;0.00007%\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eChannel Crosstalk\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003e-136dB @1kHz\u003c\/td\u003e\n \u003ctd\u003e-125dB @1kHz\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eDSP Config\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eSupported\u003c\/td\u003e\n \u003ctd\u003eNot Supported\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003ePEQ\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eTen-Band High-Precision PEQ\u003c\/td\u003e\n \u003ctd\u003eNot Supported\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003cp\u003e \u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003e1-bit done right\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eTopping’s proprietary PSRM DAC architecture uses 16 discrete elements per channel to perform 1-bit decoding with nanosecond-level switching. By eliminating off-the-shelf DAC chips, the DX9 Discrete controls every step of the digital-to-analog process. The result is extraordinary linearity and clarity: 131dB SNR, \u0026lt;0.00006% THD+N, and perfectly stable channel balance.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eGoodbye to jitter\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eA CPLD precision clock system and dual-stage jitter suppression circuit keep the digital signal clean. The AK4118 receiver handles coaxial, optical, and AES inputs with less than 50ps RMS jitter, supporting PCM up to 768kHz and DSD512. Music sounds defined and stable, with transients intact and decay left untouched.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eBalanced power from end to end\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThe DX9 Discrete’s six-channel discrete NFCA amplifier is built for demanding headphones. Each channel operates independently, producing up to 7,080mW ×2 at 32Ω with noise below 0.5µVrms (balanced) and 1.1µVrms (single-ended). The sound stays quiet, composed, and distortion-free no matter how far you turn the knob.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003ePrecision volume you can trust\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThe fully-balanced hybrid relay volume control blends relay switching with a resistor network for exact level adjustment. It eliminates channel imbalance at low volume and keeps stereo imaging razor-sharp. \u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eCustom-tuned I\/V conversion\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eTopping’s proprietary I\/V stage converts current to voltage using low-distortion op-amps and discrete components. It’s designed to unlock the PSRM’s full potential: dynamic, textured sound with a sense of air and physicality. \u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eTune to your taste\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThe built-in ten-band high-precision PEQ lets you tailor your frequency response exactly how you like it. Adjust gain, Q-factor, and frequency for each band, or import target curves through Topping’s software. Save multiple profiles for headphones, speakers, or genres.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eCrossfeed done right\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThe headphone crossfeed system uses convolution modeling of HRTF and room acoustics to create natural spatial cues. It reduces the “inside-your-head” effect common to headphones, making the stage sound wider and more realistic. There’s even a simplified BS2B mode for a gentler presentation.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eConnections for every occasion\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eWith eight digital inputs—USB, Bluetooth, two optical, two coaxial, AES, and IIS—the DX9 Discrete fits into any listening chain. IIS supports up to 768kHz PCM and DSD512. USB uses the XMOS XU-316 processor and Thesycon driver for bit-perfect playback on Windows and plug-and-play compatibility with other systems.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eOutput options your way\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eChoose between headphone, line, or preamp output—or run everything at once with All Output Mode. Outputs include XLR, RCA, 6.35mm, 4.4mm, and XLR-4, all using NEUTRIK connectors for reliable, professional-grade performance.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eWireless that holds its own\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThe integrated Qualcomm QCC5125 Bluetooth 5.1 module supports LDAC, aptX Adaptive, aptX HD, aptX, AAC, and SBC. Stream lossless audio from your phone or laptop with high-resolution clarity and low latency.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eBuilt to last\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eA CNC-machined aluminum chassis, glass top panel, and soft ambient lighting give the DX9 Discrete a modern presence on your desk. The multifunction knob can be customized to your liking, and the 12V trigger syncs power with other gear. A solid aluminum remote adds convenience without clutter.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eUser-friendly interface\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eDual 2.0-inch color displays powered by the Aurora UI let you switch between FFT spectrum, VU meters, and playback info. It’s intuitive, fast, and genuinely helpful. No manual needed.\u003cbr\u003e\u003c\/p\u003e\n \u003ch3\u003e\n \u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eFully balanced DAC and headphone amplifier combo\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eSelf-developed 16-element PSRM 1-bit DAC architecture\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eSix-channel discrete NFCA headphone amplifier\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eUp to 7,080mW ×2 output power at 32Ω\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eTHD+N \u0026lt;0.00006%, SNR 131dB, DNR 131dB\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eFully balanced hybrid relay volume control\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eTen-band high-precision PEQ with software control\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eHeadphone crossfeed with BS2B simplified mode\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eXMOS XU-316 USB processor supporting PCM 768kHz \/ DSD512\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eBluetooth 5.1 with LDAC, aptX Adaptive, aptX HD, aptX, AAC, SBC\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003e8 digital inputs (USB, BT, 2×OPT, 2×COAX, AES, IIS)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eMultiple outputs: XLR, RCA, 6.35mm, 4.4mm, XLR-4\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eAll NEUTRIK connectors for durability and precision fit\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eAurora dual-display UI with FFT, VU, and playback info\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003e12V trigger synchronization and programmable control knob\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eCNC aluminum body with glass top and ambient lighting\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\n \u003cstrong\u003eSpecs\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eDAC Section\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eDAC type: 16-element PSRM 1-bit discrete\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eTHD+N @1kHz (A-wt): \u0026lt;0.00006%\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eSNR: 131dB\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDynamic range: 131dB\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eChannel crosstalk: –136dB @1kHz\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eFrequency response: 20Hz–40kHz (±2dB)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eOutput level: 5Vrms (XLR), 2.5Vrms (RCA)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eOutput impedance: 100Ω (XLR), 50Ω (RCA)\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003eHeadphone Amplifier\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eTHD+N @1kHz (A-wt): \u0026lt;0.00007%\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eOutput power: 7,080mW ×2 @32Ω (balanced)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eNoise: \u0026lt;0.5µVrms (balanced), \u0026lt;1.1µVrms (single-ended)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eOutput impedance: \u0026lt;0.1Ω\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eChannel crosstalk: –133dB @1kHz\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eGain: 12.5dB (low), 24.5dB (high)\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003ePre-Amplifier\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eOutput level: 15Vpp (low), 48Vpp (high)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDynamic range: 131dB\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eChannel balance: 0.3dB\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003eInputs\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eUSB \/ BT \/ OPT1 \/ OPT2 \/ COAX1 \/ COAX2 \/ AES \/ IIS\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003ePCM: up to 768kHz \/ 32bit\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDSD: up to DSD512\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eBluetooth codecs: LDAC, aptX Adaptive, aptX HD, aptX, AAC, SBC\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003eOutputs\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eLine\/Pre Out: XLR \/ RCA\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eHeadphone Out: 6.35mm \/ 4.4mm \/ XLR-4\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eTrigger: 12V In\/Out\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003ePower\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eAC input: 100–240V, 50–60Hz\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003ePower consumption: dependent on mode\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003eDimensions \u0026amp; Weight\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eWidth: 13.4in (34.0cm)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDepth: 8.9in (22.5cm)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eHeight: 2.4in (6.0cm)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eWeight: 6.6lbs (3.0kg)\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\n \u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eDX9 Discrete ×1\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eRemote control ×1\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eAC cable ×1\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eUSB cable ×1\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eBluetooth antenna ×1\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003e6.35mm to 3.5mm adaptor ×1\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eProduct information card ×1\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e","brand":"TOPPING","offers":[{"title":"Black \/ Open Box - Like New","offer_id":46866158420143,"sku":"APS-AC-1137-1-LN","price":1039.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/apos-audio-topping-headphone-dac-amp-topping-dx9-discrete-dac-amp-apos-certified-black-open-box-like-new-1228856049.jpg?v=1777715951","url":"https:\/\/freshized.com\/products\/apos-certified-topping-dx9-discrete-dac-amp","provider":"Freshized","version":"1.0","type":"link"}