{"id":11452,"date":"2025-10-05T09:47:32","date_gmt":"2025-10-05T09:47:32","guid":{"rendered":"https:\/\/poiesistech.com\/audiopeople\/?post_type=product&#038;p=11452"},"modified":"2026-03-12T12:45:48","modified_gmt":"2026-03-12T12:45:48","slug":"hiby-r8ii","status":"publish","type":"product","link":"https:\/\/theaudiopeople.com.vn\/vi\/product\/hiby-r8ii\/","title":{"rendered":"Hiby R8II"},"content":{"rendered":"<p>Instead of being a mere drive towards cost-effectiveness, the PWM R8II \u2013 dubbed DARWIN Multi-Phase Array (MPA) \u2013 unlocks a new era of sustainable portable performance in DAPs.<\/p>\n<p><center><iframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/KxTO-zMEqg8?si=wYN2h88cazo1-mjV\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/center>This PWM\u00a0prodigy\u00a0sidesteps the impractical dependance on parts precision necessary in analog circuits and filters to perform.<\/p>\n<p>Rather, R8II shifts the hard work\u00a0into\u00a0the\u00a0digital realm for frequency and time-domain results only possible with high-speed DSP.<\/p>\n<p>Its pulse-width modulation decoding of digital via individual capacitors and resistors is already a one-up on the standard delta-sigma modulation typically found in DAC chips.<\/p>\n<p>HiBy&#8217;s\u00a0DARWIN MPA addresses the problems of conventional delta-sigma&#8217;s inconsistent rise and fall edges at the frequency level, with adjustments made to facilitate\u00a0more accurate, predictable switching on and off between 1s and 0s. This approach results in a reduction of errors by avoiding intersymbol interference.<\/p>\n<p>Notably, non-linearities arising from rise and fall mismatches do not manifest as total harmonic distortion. R8II&#8217;s PWM decoding does not produce harmonic errors that vary with digital output levels.<\/p>\n<div style=\"text-align: center;\"><a href=\"https:\/\/zeppelinandco.com\/blogs\/news\/headfi-rs8-darwin-chifi-r2r-rs6-hooked-on-hibys-r2r-gateway-drug\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" style=\"margin-bottom: 16px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/3334\/0232\/files\/414656485_687705813496778_990884929568703408_n_2048x2048.jpg?v=1703671133\" \/><\/a><\/div>\n<p>The brains of R8II are contained within its FPGA running a second generation of DARWIN digital filters. HiBy has cracked the\u00a0formula for simultaneous time and frequency domain performance via its proprietary code.<\/p>\n<p>Certainly, digital can only claim to be high-performance if it oversamples heavily past the problems of Nyquist. And R8II is such a fruition of this ideal being developed entirely in-house at HiBy.<\/p>\n<p>DARWIN digital filters oversample incoming PCM data by 128x. These formats are put through a discrete MPA DAC running at an incredible speed of 6.144 Mhz.<\/p>\n<p>Shifting the Nyquist frequency\u00a0exponentially beyond the range of human hearing enables the associated digital filter to function with a shallow profile.<\/p>\n<p>This allows for the effective blocking of aliased digital frequencies, while concurrently enhancing time-domain performance by minimising impulse ringing \u2013 a contrast to what a standard steep digital filter might induce.<\/p>\n<div style=\"text-align: center;\"><img decoding=\"async\" style=\"margin-bottom: 16px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/3334\/0232\/files\/10_d2c99549-6a71-49b8-a742-f8936e8a5324_2048x2048.webp?v=1703853309\" \/><\/div>\n<p>Importantly, this approach dramatically relaxes demands on the parts precision of any subsequent analog low-pass filter following\u00a0R8II&#8217;s DARWIN MPA DAC. Not that its discrete current-to-voltage I\/V converter \u2013 made of individual transistors \u2013 has a problem dealing with any remaining distortion presenting itself as a DC offset that is easy to filter out.<\/p>\n<p>The dynamic element-matched, multi-bit output of R8II&#8217;s DAC is precious. Indeed, HiBy&#8217;s I\/V stage\u00a0has\u00a0the high slew rates and instant step response\u00a0necessary to keep up with the more linear phase of DARWIN MPA&#8217;s shallow digital filters.<\/p>\n<p>Whatever entered R8II&#8217;s DAC as digital comes out exactly the same in analog due to this I\/V&#8217;s\u00a0low open-loop gain \u2013 with lower negative feedback necessary leading to its high speed, plus high slew rates and unity gain stability.<\/p>\n<p>There&#8217;s a reason R8II\u00a0portrays elements within the soundstage with such solidity, despite aural image tangibility not normally being the strong suit of 2-7 bit delta-sigma or PWM designs.<\/p>\n<p>Indeed, the elements within the soundstage this HiBy generates\u00a0are convincingly rendered because its small analog signal post-conversion is of the highest quality, and inherently stable without going into oscillation caused by too much I\/V gain product.<\/p>\n<div style=\"text-align: center;\"><img decoding=\"async\" style=\"margin-bottom: 16px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/3334\/0232\/files\/15_4ace667c-50e9-4685-9b91-ee803a4a110a_2048x2048.webp?v=1703853367\" \/><\/div>\n<p>HiBy&#8217;s\u00a0decode goes through a four-channel analog volume control before reaching the Class A discrete output stage, preserving your music&#8217;s true dynamic range resolution.<\/p>\n<p>R8II&#8217;s power supply rails see operating voltages for its power section\u00a0sit at a nominal 6 volts that Turbo Mode boosts to 7.5, assuring the open-loop linearity of discrete transistors.\u00a0HiBy&#8217;s\u00a0discrete amplifier can be operated in Class AB or an optimal Class A, for sonic tweaking with your favourite earphones and headphones.<\/p>\n<p>Differentiating itself from even other flagships that cling to op-amp layouts seeking THX-certification but with inordinate amounts of gain and feedforward\/feedback, R8II&#8217;s linearity remains excellent already in the open-loop, owing to its high operating voltages and bias.<\/p>\n<p>\u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o t\u1eebng transistor ri\u00eang l\u1ebb lu\u00f4n ho\u1ea1t \u0111\u1ed9ng trong \u0111i\u1ec1u ki\u1ec7n t\u1ed1i \u01b0u nh\u1ea5t. Nh\u1edd \u0111\u00f3, \u0111\u1ed9 m\u00e9o ti\u1ebfng v\u00e0 nhi\u1ec5u \u0111\u01b0\u1ee3c gi\u1eef \u1edf m\u1ee9c c\u1ef1c th\u1ea5p m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i l\u1ea1m d\u1ee5ng k\u1ef9 thu\u1eadt h\u1ed3i ti\u1ebfp \u00e2m (negative feedback) qu\u00e1 \u0111\u00e0.<\/p>\n<p>HiBy\u00a0designed a true-balanced differential amplifier to further improve R8II&#8217;s linearity, and you can count on common-mode rejection at its best whenever you plug in via 4.4mm preserving its resolution.<\/p>\n<p><center><iframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/SGV9iNawM3Q?si=FsSbecqpuTVEYMhX\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/center>It&#8217;s an output stage that&#8217;s direct-coupled to improve low-frequency performance, and\u00a0R8II audibly plumbs the lowest bass depths. With the extension down low, phase reproduction in the audible human hearing range for taut, hard-hitting and life-like dynamics is excellent.<\/p>\n<p>At the tip of\u00a0R8II&#8217;s\u00a0power stage spear,\u00a016 transistors ensure\u00a0excellent current-handling for good reason,\u00a0to reap the full benefit of HiBy&#8217;s separately regulated power supplies for analog and digital sections.<\/p>\n<p><span data-mce-fragment=\"1\">The former is particularly massive and incorporates inductors that store huge energy in a magnetic field before releasing\u00a0on demand to HiBy&#8217;s Class A amplifier.\u00a0<\/span><\/p>\n<p><span data-mce-fragment=\"1\">Superior even to super capacitors due to their low DC resistance, these inductors constitute\u00a0a massive power supply for an output stage that can<\/span>\u00a0follow the impedances of the\u00a0<a href=\"https:\/\/zeppelinandco.com\/collections\/vendors?q=Empire%20Ears\" target=\"_blank\" rel=\"noopener noreferrer\">Empire Ears<\/a>\u00a0<a href=\"https:\/\/zeppelinandco.com\/products\/empire-ears-raven-uiem\" target=\"_blank\" rel=\"noopener noreferrer\">Raven,<\/a>,\u00a0<a href=\"https:\/\/zeppelinandco.com\/products\/headfi-singapore-headphones-earphones-audiophile-amplifier-dac-dap-music-player-tws-empire-ears-odin-uiem\" target=\"_blank\" rel=\"noopener noreferrer\">Odin<\/a>,\u00a0<a href=\"https:\/\/zeppelinandco.com\/products\/empire-ears-evo-uiem\" target=\"_blank\" rel=\"noopener noreferrer\">Legend Evo<\/a>\u00a0plus <a href=\"https:\/\/zeppelinandco.com\/collections\/vendors?q=Vision%20Ears\" target=\"_blank\" rel=\"noopener noreferrer\">Vision Ears<\/a> <a href=\"https:\/\/zeppelinandco.com\/products\/vision-ears-ext-mk2-uiem\" target=\"_blank\" rel=\"noopener noreferrer\">Elysium EXT<\/a>\u00a0down low.<\/p>\n<p>Simultaneously, R8II swings enough voltage to push <a href=\"https:\/\/zeppelinandco.com\/collections\/vendors?q=Subtonic\" target=\"_blank\" rel=\"noopener noreferrer\">Subtonic Audio<\/a>&#8216;s <a href=\"https:\/\/zeppelinandco.com\/products\/subtonic-storm\" target=\"_blank\" rel=\"noopener noreferrer\">Storm<\/a> v\u00e0 <a href=\"https:\/\/zeppelinandco.com\/collections\/vendors?q=Symphonium%20Audio\" target=\"_blank\" rel=\"noopener noreferrer\">Symphonium Audio<\/a>&#8216;s <a href=\"https:\/\/zeppelinandco.com\/products\/symphonium-crimson\" target=\"_blank\" rel=\"noopener noreferrer\">Crimson<\/a>, <a href=\"https:\/\/zeppelinandco.com\/collections\/vendors?q=Sony\" target=\"_blank\" rel=\"noopener noreferrer\">Sony<\/a>&#8216;s <a href=\"https:\/\/zeppelinandco.com\/products\/sony-ier-z1r\" target=\"_blank\" rel=\"noopener noreferrer\">IER-Z1R<\/a> as well as <a href=\"https:\/\/zeppelinandco.com\/collections\/vendors?q=Focal\" target=\"_blank\" rel=\"noopener noreferrer\">Focal<\/a>&#8216;s <a href=\"https:\/\/zeppelinandco.com\/products\/focal-utopia-2022\" target=\"_blank\" rel=\"noopener noreferrer\">Utopia<\/a>, <a href=\"https:\/\/zeppelinandco.com\/collections\/vendors\/products\/hifi-headfi-singapore-headphones-earphones-audiophile-amplifier-dac-dap-music-player-tws-focal-stellia\" target=\"_blank\" rel=\"noopener noreferrer\">Stellia<\/a> v\u00e0 <a href=\"https:\/\/zeppelinandco.com\/collections\/vendors\/products\/focal-clear-mg-pro\" target=\"_blank\" rel=\"noopener noreferrer\">Clear MG Pro<\/a>, with total aplomb.<\/p>\n<p><center><iframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/EqqMw1Gc5yc?si=BcCz4HKE0trLTxFs\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/center>You&#8217;ll want to exploit all of R8II&#8217;s technical feats by getting as much of your music aboard. So\u00a0HiBy built in the futuristic Snapdragon 665 SOC and 8GB of RAM to run Android 12 and Google Play Store perfectly.<\/p>\n<p>A 12,000mAh battery supplies up to 20 hours of use. Stream Hi-Res Lossless Tidal and Apple Music at full bit and sample rates with\u00a0HiBy&#8217;s Direct Transport Audio OS that bypasses\u00a0detrimental Android sample-rate conversion.<\/p>\n<p>And an alcantara-covered backplate and stainless steel chassis means you&#8217;ll always listen to R8II in style. It&#8217;s style that absolutely comes with substance, containing a HiBy heirloom.<\/p>\n<p>A heirloom that\u00a0cumulates as a symbol for how far they&#8217;ve come turning their code into truly groundbreaking products and musical nirvana. Track how HiBy made their way to the top by checking out their other innovations <a href=\"https:\/\/zeppelinandco.com\/collections\/vendors?q=Hiby\" target=\"_blank\" rel=\"noopener noreferrer\">t\u1ea1i \u0111\u00e2y<\/a>, ho\u1eb7c xem th\u00eam c\u00e1c m\u00e1y nghe nh\u1ea1c kh\u00e1c c\u1ee7a ch\u00fang t\u00f4i <a href=\"https:\/\/zeppelinandco.com\/collections\/digital-audio-players\" target=\"_blank\" rel=\"noopener noreferrer\">t\u1ea1i \u0111\u00e2y<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>When you&#8217;ve got the code, you&#8217;ve got the power.\u00a0<a href=\"https:\/\/zeppelinandco.com\/collections\/vendors?q=Hiby\" target=\"_blank\" rel=\"noopener noreferrer\">HiBy Music<\/a>&#8216;s\u00a0proprietary\u00a0<a href=\"https:\/\/zeppelinandco.com\/blogs\/news\/headfi-rs8-darwin-chifi-r2r-rs6-hooked-on-hibys-r2r-gateway-drug\" target=\"_blank\" rel=\"noopener noreferrer\">DARWIN<\/a>\u00a0DSP and digital filter design has paid off in R8II \u2013 Head-Fi&#8217;s groundbreaking, first totally original, discrete pulse-width modulated (PWM) music player.<\/p>\n<p>Sweet, with a black background and plenty of vocal density,\u00a0R8II is\u00a0one\u00a0smooth customer.\u00a0With DARWIN having gained prominence in the R2R <a href=\"https:\/\/zeppelinandco.com\/collections\/vendors\/products\/headfi-chifi-hiby-rs6\" target=\"_blank\" rel=\"noopener noreferrer\">RS6<\/a> and <a href=\"https:\/\/zeppelinandco.com\/collections\/vendors\/products\/hiby-rs8\" target=\"_blank\" rel=\"noopener noreferrer\">RS8<\/a> players as software specially written for hardware, the oversampling, noise-shaped PWM R8II eschews standard DAC chips and is an even further step as a pure HiBy digital creation.<\/p>\n<p>It goes right onto <a href=\"https:\/\/www.headfonia.com\/hiby-r8-ii-review\/\" target=\"_blank\" rel=\"noopener noreferrer\">Headfonia<\/a>&#8216;s Recommended Buys list.\u00a0<a href=\"https:\/\/headfonics.com\/hiby-r8-ii-review\/\" target=\"_blank\" rel=\"noopener noreferrer\">Headfonics<\/a> hail R8II&#8217;s &#8220;vocal presence and midrange openness that might tick more boxes than the RS8&#8221;. <a href=\"https:\/\/twister6.com\/2024\/02\/05\/hiby-r8-ii-r8ii\" target=\"_blank\" rel=\"noopener noreferrer\">Twister6<\/a> praised &#8220;such rich selection of features and the flagship level of performance at a cheaper price in comparison to their RS8 TOTL flagship&#8221;.<\/p>\n<p><a href=\"https:\/\/theheadphonelist.com\/hiby-r8-ii-a-flagship-evolved\" target=\"_blank\" rel=\"noopener noreferrer\">The Headphone List<\/a> gives it the &#8220;highest possible recommendation&#8221;. Indeed, HiBy loaded code aboard R8II&#8217;s FPGA to run its PWM DAC with a new frequency and time domain accuracy. It gets the <a href=\"https:\/\/soundnews.net\/reviews\/sources\/daps\/hiby-r8-ii-dap-review-and-the-evolution-of-portable-audio\" target=\"_blank\" rel=\"noopener noreferrer\">Soundnews<\/a> Gold Award and even outscores its RS8 cousin, as this reviewer validly questioned if it&#8217;s the best portable DAP ever.<\/p>\n<p>All these gains in decoding digital to analog translate to a newfound realism and accuracy in playing music back via the Android 12 R8II, which comes with HiBy&#8217;s discrete <a href=\"https:\/\/store.hiby.com\/blogs\/press\/hiby-r5-a-class-a-act-debuts\" target=\"_blank\" rel=\"noopener noreferrer\">Class A<\/a> 4.4mm headphone amplifier capable of driving a new generation of low-impedance flagship earphones.\u00a0<strong>[See Product Desc. For More]<\/strong><\/p>\n<p><!--split--><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"featured_media":11536,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[413],"product_cat":[398,25],"product_tag":[168,271,251,173,181,182],"pa_accessories":[],"pa_headphones":[],"pa_connection":[],"pa_fit":[],"pa_type":[],"pa_cases":[],"class_list":["post-11452","product","type-product","status-publish","has-post-thumbnail","product_brand-hiby","product_cat-all-products","product_cat-digital-audio-players","product_tag-audio","product_tag-brand_hiby","product_tag-dap","product_tag-pre-order","product_tag-shopee","product_tag-solid-state","entry","has-media","first","onbackorder","shipping-taxable","purchasable","product-type-variable","col","span_1_of_4","owp-content-left","owp-thumbs-layout-horizontal","owp-btn-very-big","owp-tabs-layout-vertical"],"acf":[],"_links":{"self":[{"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/product\/11452","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/comments?post=11452"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/media\/11536"}],"wp:attachment":[{"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/media?parent=11452"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/product_brand?post=11452"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/product_cat?post=11452"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/product_tag?post=11452"},{"taxonomy":"pa_accessories","embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/pa_accessories?post=11452"},{"taxonomy":"pa_headphones","embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/pa_headphones?post=11452"},{"taxonomy":"pa_connection","embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/pa_connection?post=11452"},{"taxonomy":"pa_fit","embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/pa_fit?post=11452"},{"taxonomy":"pa_type","embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/pa_type?post=11452"},{"taxonomy":"pa_cases","embeddable":true,"href":"https:\/\/theaudiopeople.com.vn\/vi\/wp-json\/wp\/v2\/pa_cases?post=11452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}