{"product_id":"ibasso-d17","title":"iBasso D17 Atheris | Portable DAC and Amp","description":"\u003cp\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto; width: 50%;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/ibasso-logo-horiz.jpg?v=1681845587\" alt=\"iBasso logo horizontal\"\u003e\u003c\/p\u003e\n\u003ch4\u003eThe iBasso D17 Atheris Fuses Discrete R2R Ultra and 1-bit DACs with Dual Korg Nutube Amplification, Delivering a Rich, Lifelike Sound and Desktop Power in a Portable Form\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eIn-house developed R2R Ultra + 1bit dual discrete DAC \u0026amp; tube amp\u003c\/li\u003e\n\u003cli\u003eFour-channel fully balanced symmetric R2R architecture\u003c\/li\u003e\n\u003cli\u003eFeatures dual Korg 6PI Nutubes\u003c\/li\u003e\n\u003cli\u003eFPGA-Master 3.0 ensures nanosecond-level I\/O precision\u003c\/li\u003e\n\u003cli\u003eDelicate sound with a natural analog presentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"iBasso D17 Atheris x2 front and back floating on grey background\" height=\"2048\" width=\"2048\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/ibasso-d17-atheris-banner.webp?v=1757686193\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"bloom-take\"\u003e\n\u003ctable bgcolor=\"”#f6f6f6”\" width=\"90%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan style=\"color: #a30e0b;\"\u003e\u003cstrong\u003eBloom's Take\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe iBasso D17 Atheris brings flagship-level sound to a transportable form, blending R-2R, 1-bit, and tube technologies inside a rugged, minimalist chassis. With two control knobs, a monochrome OLED, and a hybrid amp stage, it focuses on pure performance and sonic versatility rather than flashy design. It’s not exactly pocket-sized, but it’s built for those who want desktop-grade audio anywhere.\u003c\/p\u003e\n\u003cp\u003eThe D17’s three processing modes—NOS, OS, and SD—let listeners tailor their sound: R-2R offers a smooth, analog warmth, while 1-bit mode delivers sharper clarity and micro-detail, balanced beautifully by the tube stage’s natural richness. It runs quiet enough for sensitive IEMs yet powerful enough for demanding headphones, offering excellent control and dynamics across setups.\u003c\/p\u003e\n\u003cp\u003eDesigned to blur the line between portable and desktop, the D17 Atheris succeeds in delivering serious, high-end performance on the go, making it one of iBasso’s most impressive and flexible DAC\/amps yet.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/bloomaudio.mom\/blogs\/articles\/flagship-sound-in-your-pocket-if-you-have-really-big-pockets-ibasso-d17-atheris-review\" title=\"iBasso D17 Atheris Review\"\u003eRead our full review\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eA New Benchmark for Portable DAC\/Amp's\u003c\/h3\u003e\n\u003cp\u003eThe D17 utilizes iBasso's in-house developed discrete R2R Ultra and 1bit DAC.\u003cspan class=\"Apple-converted-space\"\u003e  \u003c\/span\u003eIt features a four-channel fully balanced symmetrical R2R discrete component DAC, utilizing a total of 284 high-precision film resistors with an accuracy of 0.01%. The R2R decoding provides a natural, delicate sound with a natural analog presentation, offering a unique lively listening experience. The in-house developed 1bit DAC employs 8 sets of 8E, totaling 64 PWM-DACs, delivering a landscape of rich musical details and extremely high resolution audio playback.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eD17 Has Three DAC Modes \u003c\/strong\u003e\u003cbr\u003eNOS Mode（PCM utilizes R2R DAC decoding, DSD utilizes 1bit DAC decoding）\u003cbr\u003eAll to R2R（OS mode，all to PCM format）\u003cbr\u003eAll to 1bit（SD mode，all to DSD format）\u003c\/p\u003e\n\u003ch3\u003eFour-Channel Fully Balanced R2R Architecture\u003c\/h3\u003e\n\u003cp\u003eThe D17 employs a four-channel fully balanced R2R architecture built around 284 ultra-precise resistors, paired with iBasso’s custom hardware and software compensation for exceptional accuracy. This design achieves an impressive -104 dB THD+N, over 10 dB better than many mainstream R2R DACs, while delivering the warm, detailed, and naturally musical sound signature enthusiasts love. \u003c\/p\u003e\n\u003ch3\u003eR2R Ultra\u003c\/h3\u003e\n\u003cp\u003eR2R Ultra is iBasso’s next-generation R2R architecture, designed to solve the core limitations of traditional R2R DACs. The D17 uses a 24-bit, fully balanced 8-channel R2R array combined with a 4-bit MSB String DAC, a self-developed FPGA algorithm, and a hardware resistor compensation network. This differential, multi-DAC design fundamentally eliminates zero-crossing distortion while delivering far higher linearity than conventional R2R implementations.\u003c\/p\u003e\n\u003cp\u003eWith 436 high-precision resistors working in tandem with real-time FPGA calibration, R2R Ultra achieves exceptional measured performance—up to 126dB dynamic range and THD+N as low as –104dB. The result is a cleaner, more stable, and more accurate R2R decoding system that represents a true generational leap beyond traditional R2R designs.\u003c\/p\u003e\n\u003ch3\u003eDual Korg 6PI Nutubes\u003c\/h3\u003e\n\u003cp\u003eThe two Nutube 6P1 tubes on the D17 impart a unique tube character and a warm, mellow yet dynamic texture to the sound. The anode is powered by a 24V high-voltage supply, providing better linearity. Paired with the high-performance TI buffer amplifier BUF634A, it ensures a steady and powerful source of power. As a result, the D17 can deliver over 1200mW + 1200mW at 32Ω, easily driving a wide range of flagship IEMs and high-impedance headphones. \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"iBasso D17 Atheris sitting face up on wooden table with plant plugged into outlet with tubes lit up\" height=\"1360\" width=\"2048\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/ibasso-d17-tubes.webp?v=1758833243\"\u003e\u003c\/p\u003e\n\u003ch3\u003eOpening the Door to Acoustical Realism\u003c\/h3\u003e\n\u003cp\u003eIn 1bit mode, the four channels L+, L-, R+, and R- each have 16E, totaling 64 PWM-DAC units working together. Controlled by the FPGA-Master 3.0 with nanosecond-level precise I\/O delay management while compensating for \"wiring delay\" to ensure that the signal edges arriving at the DAC are aligned and strictly synchronized. This not only achieves an impressive THD+N of -114dB but also significantly enhances sound detail and density. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eThree-Layer Composite Seismic Isolation System\u003c\/h3\u003e\n\u003cp\u003eThe D17’s three-layer composite isolation system combines double-layer PCBs and damping materials to disperse stress, cut resonance, and keep microphonic effects below audible levels, placing it at the forefront of iBasso’s tube amp designs\u003c\/p\u003e\n\u003ch3\u003eDual Battery Architecture\u003c\/h3\u003e\n\u003cp\u003eWith separate batteries powering the DAC and headphone amp, the D17’s dual architecture isolates digital interference and maintains stable current even under heavy loads, delivering clear, distortion-free sound with exceptional musicality.\u003c\/p\u003e\n\u003ch3\u003eFPGA-Master 3.0\u003c\/h3\u003e\n\u003cp\u003eThe D17 is equipped with iBasso's in-house developed FPGA-Master 3.0 architecture, deeply integrated with two Accusilicon ultra-low phase noise femtosecond oscillators to create a pure, unified single clock source. Through nanosecond-level high-precision delay control and real-time clock regeneration technology, the system can simultaneously compensate for R2R decoding and 1bit decoding, reducing clock jitter and distortion to extremely low levels. \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"iBasso D17 Atheris FPGA master 3.0 graphic\" height=\"1360\" width=\"2048\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/ibasso-d17-atheris-fpga.webp?v=1757685569\"\u003e\u003c\/p\u003e\n\u003ch3\u003eAnalog + Digital Volume Controls\u003c\/h3\u003e\n\u003cp\u003eThe D17 combines a compact 24-position stepped attenuator with ultra-precise ±0.1dB channel matching and DSP-based digital control, delivering exceptionally accurate and flexible volume adjustment\u003c\/p\u003e\n\u003ch3\u003eCutting Edge Parts\u003c\/h3\u003e\n\u003cp\u003eLoaded with cutting-edge components, the iBasso D17 Atheris packs 284 ultra-precise 0.01% film resistors, dual 30,000-hour Nutube 6P1 vacuum tubes, and a custom 24-position stepped attenuator with ±0.1 dB channel accuracy. Twin Accusilicon femtosecond oscillators, a pro-grade DSP with 192 dB dynamic range, and an ultra-low-noise 0.6 μV power supply deliver breathtaking clarity, while dual batteries, iBasso film and vintage SPRAGUE capacitors, and a sharp 1.3-inch OLED display round out a portable DAC\/amp built for uncompromising performance. \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/ibasso-d17-lifestyle.webp?v=1758833326\" width=\"2048\" height=\"1360\" alt=\"iBasso D17 Atheris sitting face up on vinyl record on wooden table top left 3 quarter angle\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/ibasso-d17-atheris-box.webp?v=1757685708\" width=\"2048\" height=\"2048\" alt=\"iBasso D17 Atheris in the box\"\u003e\u003c\/p\u003e","brand":"iBasso","offers":[{"title":"New","offer_id":41740754255947,"sku":"IBS-D17","price":1799.0,"currency_code":"USD","in_stock":true},{"title":"Open Box","offer_id":41876782940235,"sku":"IBS-D17-OB","price":1799.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/ibasso-0-d17-atheris-thumb.webp?v=1757685105","url":"https:\/\/bloomaudio.mom\/products\/ibasso-d17","provider":"Bloom Audio","version":"1.0","type":"link"}