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<h5 class="bold fourteen" data-selenium="itemHeading"><a href="https://www.bhphotovideo.com/c/product/1381055-REG/astell_kern_3ppm127c_uslan1_ak70_mkii_portable_high_resolution.html" class="c5" data-selenium="itemHeadingLink" itemprop="url">Astell!#!amp!*!Kern AK70 MKII Portable High-Resolution Audio Player and USB DAC </a> - 1 YEAR ASTELL WARRANTY <img src="//gdetail.image-gmkt.com/095/717863371/2018/1/412c84c1-28ce-4d48-bee3-a24de0164bb4.JPG" onerror="this.src='https://gdetail.image-gmkt.com/095/717863371/2018/1/412c84c1-28ce-4d48-bee3-a24de0164bb4.JPG'; $(this).attr('onerror','');" > </h5><ul class=""><li class="">ModelAK70 MKⅡBody ColorNoir BlackBody MaterialAluminumDisplay3.3inch WVGA (480 x 800) TFT LCDSupported Audio FormatsWAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSFSample ratePCM : 8kHz ~ 192kHz (8/16/24bits per Sample)</li><li class="">DSD : DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz)Output LevelUnbalance 2.0Vrms / Balance 4.0Vrms (Condition No Load)DACCirrus Logic CS4398 x2 (Dual DAC)DecodingSupport up to 24bit / 192kHz Bit to Bit DecodingInputUSB Micro-B input (for charging !#!amp!*! data transfer (PC !#!amp!*! MAC)) / Connection Mode : MTP (Media Device)OutputsPHONES (3.5mm) / Balanced Out (2.5mm, only 4-pole supported)Wi-Fi802.11 b/g/n (2.4GHz)BluetoothV4.0 (A2DP, AVRCP, aptXtm HD)Dimensions2.47 ”(62.8 mm) [W] x 3.81 ”(96.8 mm) [H] x 0.59 ”(15.2 mm) [D]Weight5.29 oz (150 g)Feature EnhancementsFirmware upgrades supported (OTA)Audio PerformanceFrequency Response±0.11dB (Condition: 20Hz~20kHz) Unbalance / ±0.09dB (Condition: 20Hz~20kHz) Balance</li><li class="">±0.5dB (Condition: 10Hz~70kHz) Unbalance / ±0.5dB (Condition: 10Hz~70kHz) BalanceSignal to Noise Ratio118dB @ 1kHz, Unbalance / 119dB @ 1kHz, BalanceCrosstalk136dB @ 1kHz, Unbalance / 138dB @ 1kHz, BalanceTHD+N0.0005% @ 1kHz, Unbalance / 0.0005% @ 1kHz, BalanceIMD SMPTE0.0003% 800Hz 10kHz(4:1) Unbalance / 0.0003% 800Hz 10kHz(4:1) BalanceOutput ImpedanceBalanced out 2.5mm (3ohm) / PHONES 3.5mm (1.5ohm)Clock sourceClock Jitter45ps (Typ)BatteryCapacity2,500mAh 3.7V Li-Polymer BatteryMemoryBuilt-in Memory64GB [NAND]External MemorymicroSD (Max 256GB) x1OSSupported OSWindows 7,8,10 (32/64bit), MAC OS X 10.7 and up</li></ul> <ul class="top-section-list" data-selenium="highlightList"><li class="top-section-list-item">24-Bit, 192 kHz Bit-to-Bit Playback</li><li class="top-section-list-item">Cirrus Logic CS4398 x 2 (Dual DAC)</li><li class="top-section-list-item">PCM and DSD File Support</li><li class="top-section-list-item">Wi-Fi and Bluetooth Capable</li><li class="top-section-list-item">3.3" WVGA AMOLED Full Touchscreen</li><li class="top-section-list-item">64GB Internal Flash Memory</li><li class="top-section-list-item">256GB microSD Card Slot</li><li class="top-section-list-item">10-Band EQ</li><li class="top-section-list-item">Integrated Volume Wheel</li><li class="top-section-list-item">Brushed Aluminum Body</li></ul> <h5 class="bold fourteen" data-selenium="itemHeading"><img src="//gdetail.image-gmkt.com/095/717863371/2018/1/2e75b284-e3d2-4d8a-8b8e-7d0d9e026113.JPG" onerror="this.src='https://gdetail.image-gmkt.com/095/717863371/2018/1/2e75b284-e3d2-4d8a-8b8e-7d0d9e026113.JPG'; $(this).attr('onerror','');" > <img src="//gdetail.image-gmkt.com/095/717863371/2018/1/23a566da-7a50-4048-b68f-a492fc1e5568.JPG" onerror="this.src='https://gdetail.image-gmkt.com/095/717863371/2018/1/23a566da-7a50-4048-b68f-a492fc1e5568.JPG'; $(this).attr('onerror','');" > <img src="//gdetail.image-gmkt.com/095/717863371/2018/1/2e17e9f3-6204-4253-bd48-89cf3b99a118.JPG" onerror="this.src='https://gdetail.image-gmkt.com/095/717863371/2018/1/2e17e9f3-6204-4253-bd48-89cf3b99a118.JPG'; $(this).attr('onerror','');" > <img src="//gdetail.image-gmkt.com/095/717863371/2018/1/29138e62-86b5-4521-8e01-c7306a1dafce.JPG" onerror="this.src='https://gdetail.image-gmkt.com/095/717863371/2018/1/29138e62-86b5-4521-8e01-c7306a1dafce.JPG'; $(this).attr('onerror','');" > <img src="//gdetail.image-gmkt.com/095/717863371/2018/1/8d9235ef-7a0d-461c-a172-295270cda5ef.JPG" onerror="this.src='https://gdetail.image-gmkt.com/095/717863371/2018/1/8d9235ef-7a0d-461c-a172-295270cda5ef.JPG'; $(this).attr('onerror','');" > </h5>Dual DAC separates the left and right  audio channels from input to outputThe advantage of a dual DAC player has now become available to everyone. The AK70 MKⅡ is the first model from Astell!#!amp!*!Kern to be equipped with a dual DAC for under a thousand dollars. Its separated channel circuit design offers less noise and interference, yet adds more fidelity and audio output power, to create a bigger sound stage with clearer imaging when paired with your favorite cans or speakers.Dual DAC'S Balanced OutputHigher audio output with the same refined Astell!#!amp!*!Kern sound signatureWith a substantial power output of 4.0Vrms from the balanced output, the AK70 MKⅡ can drive a wide range of heavy, hard-to-drive headphones without a problem thanks to Astell!#!amp!*!Kern's latest audio design technology.While maintaining the natural and neutral tone and sound signature Astell!#!amp!*!Kern is famous for, the newly designed audio circuit creates authentic sounds by exceeding previous Hi-Fi Audio specifications, including SNR, Crosstalk, and THD+N, over previous models.The powerful AK70 MKⅡ's sound quality is sure to please even the most discerning music aficionado.AK70 MKⅡ vs. AK70<table><thead><tr><th scope="col">Model</th><th scope="col">AK70 MKⅡ</th><th scope="col">AK70</th></tr></thead><tbody><tr><th> </th><td><img alt="" src="https://sg-live.slatic.net/v2/resize/products/S-332-294d62b5a862557a4709fbea5fae6378.jpg"></td><td><img alt="" src="https://sg-live.slatic.net/v2/resize/products/S-332-d854dbe3c32e834804f97c73d7603916.jpg"></td></tr><tr><th>DAC</th><td>Dual DAC (Cirrus Logic CS4398 x2)</td><td>Single DAC (Cirrus Logic CS4398 x1)</td></tr><tr><th>Output Level</th><td>Balance 4.0Vrms / Unbalance 2.0Vrms (Condition No Load)</td><td>Balance 2.3Vrms / Unbalance 2.3Vrms (Condition No Load)</td></tr><tr><th>Signal to Noise Ratio</th><td>Unbalance 118dB @ 1kHz Balance 119dB @ 1kHz</td><td>Unbalance 116dB @ 1kHz Balance 116dB @ 1kHz</td></tr><tr><th>Crosstalk</th><td>Unbalance 136dB @ 1kHz Balance 138dB @ 1kHz</td><td>Unbalance 130dB @ 1kHz Balance 130dB @ 1kHz</td></tr><tr><th>THD+N</th><td>Unbalance 0.0005% @ 1kHz Balance 0.0005% @ 1kHz</td><td>Unbalance 0.0008% @ 1kHz Balance 0.0007% @ 1kHz</td></tr><tr><th>Clock Jitter</th><td>45ps(Typ)</td><td>50ps(Typ)</td></tr><tr><th>Battery</th><td>2,500mAh 3.7V Li-Polymer</td><td>2,200mAh 3.7V Li-Polymer</td></tr></tbody></table>* SNR (Signal to Noise Ratio): As the signal-to-noise ratio increases, the clearer the sound becomes. * CROSSTALK: The higher the number in the crosstalk specification, the higher the isolation in the Left/Right channels develops.  * THD+N (THD + Noise, Distortion): over the THD + Noise signal rate, less distortion is heard. * Jitter: With smaller figures representing irregular tremors of the signal waveform, the better the device performs.Compact size for easy carrying  and one-handed operationAK70 MKⅡ delivers superb Hi-Fi audio quality in a pocket-sized portable,  a must-have feature for listeners who want high quality sound any place and anytime.  No need to compromise with lossy, compressed music anymore.The ergonomic body design fits nicely in the palm of the hand,  making operation a smooth, one-handed experience.24-bit, 192 kHz Bit-to-Bit PlaybackThe AK70 MKⅡ plays any resolution of digital files up to 24-bit/192 kHz, bit-for-bit. 32-bit audio and single or double rate DSD can also be played, but it will be converted to PCM or downsampled.* 32-bit, 384 kHz is downsampled to 24-bit, 192 kHz, and 32-bit, 352 kHz is downsampled to 24-bit, 176 kHz for playback. * DSD 64/128 is converted via DSD-to-PCM to PCM 24-bit, 176 kHz for playback.32bit SRC by the AK70 MKⅡ32-bit MQS32-bit DeliveryCPUConversionto 24bit24-bit DeliveryCS4398DACDSD-to-PCM Conversion by the AK70 MKⅡDSD 64/128DSD DeliveryCPUDSD-to-PCMConversionPCM DeliveryCS4398DACBalanced OutThe AK70 MKⅡ delivers original sound using the 2.5mm 4-pole balanced output that Astell!#!amp!*!Kern first pioneered on the AK240 (and other manufacturers soon adopted). The balanced out provides a more powerful audio signal with less noise interference.Noise Detected during Balanced Output<img alt="" src="https://sg-live.slatic.net/v2/resize/products/S-332-c9fb0235e52d5dafaaf06ef219ea0843.jpg">Noisehot signalcold signalGround or ground lineNoise Removed After Detection<img alt="" src="https://sg-live.slatic.net/v2/resize/products/S-332-50ce5ce01b113cae490d384432e1156e.jpg">Noisehot signalcold signal reversedGround or ground lineNoise Removal Complete   <img alt="" src="https://sg-live.slatic.net/v2/resize/products/S-332-7da7f3c24d550c4f9e65c7de88e3c8cb.jpg">signal synthesisGround or ground line<div class="ov-wrapper js-overview-desc"><div class="ov-desc">The AK70 MKII music player can be used as a USB DAC that can double as an embedded 24-bit/96 kHz sound card by connecting with a Windows or Mac computer. After downloading a driver from Astell!#!amp!*!Kern, the AK70 can simplify the playback of DSD files on your computer.The player is designed for a secure one-handed grip that can fit the contour of the user's thumb. The volume wheel is designed to be protruding slightly from a concave surface so that you can control volume with a simple motion of sliding your finger up and down. In addition, the player comes in an anodized aluminum casing. The AK70 MKII ships with a protective film, micro-USB cable, and a microSD slot cover.</div></div><div class="sectionHeaders js-hiddenFeatures" data-selenium="sectionHeaders"><dl class="js-featureSectionDL" data-tickertarget="ov-ft-2"><dt class="featureTitle">Dual DAC</dt><dd class="c28"><ul><li>The dual DAC offers a separated channel circuit design that offers less noise and interference, while adding more fidelity and audio output power, to create a bigger sound stage with clearer imaging when paired with your favorite headphones or speakers</li></ul></dd></dl><dl class="js-featureSectionDL" data-tickertarget="ov-ft-3"><dt class="featureTitle">Higher Audio Output</dt><dd class="c28"><ul><li>With a substantial power output of 4.0 Vrms from the balanced output, the AK70 MKII can drive a wide range of heavy, hard-to-drive headphones without a problem thanks to Astell!#!amp!*!Kern's audio design technology</li><li>The redesigned audio circuit creates authentic sounds by exceeding previous Hi-Fi Audio specifications, including SNR, Crosstalk, and THD+N, over previous models</li></ul></dd></dl><dl class="js-featureSectionDL" data-tickertarget="ov-ft-4"><dt class="featureTitle">Compact Size</dt><dd class="c28"><ul><li>AK70 MKII delivers Hi-Fi audio quality in a pocket-sized portable package</li><li>The ergonomic body design fits nicely in the palm of the hand, making operation a smooth, one-handed experience</li></ul></dd></dl><dl class="js-featureSectionDL" data-tickertarget="ov-ft-5"><dt class="featureTitle">High Definition Audio Playback</dt><dd class="c28"><ul><li>The AK70 MKII plays any resolution of digital files up to 24-bit/192 kHz, bit-for-bit</li><li>32-bit audio and single- or double-rate DSD can also be played, but it will be converted to PCM or down-sampled</li></ul></dd></dl><dl class="js-featureSectionDL" data-tickertarget="ov-ft-6"><dt class="featureTitle">Balanced Out</dt><dd class="c28"><ul><li>The AK70 MKII delivers original sound using the 2.5mm 4-pole balanced output that provides a more powerful audio signal with less noise interference</li></ul></dd></dl><dl class="js-featureSectionDL" data-tickertarget="ov-ft-7"><dt class="featureTitle">USB Audio and DAC</dt><dd class="c28"><ul><li>USB Audio<ul><li>A simple USB connection will allow the AK70 MKII to be used as a digital music storage device and/or pre-amp to output digital audio through USB</li><li>The AK70 MKII transfers DSD in native format through DoP (DSD over PCM), or converts DSD to PCM for if DoP isn't supported</li></ul></li><li>USB DAC<ul><li>Connect to your Windows/Mac computer, or other system, via a USB cable and use the AK70 MKII's hardware to provide enhanced sound quality</li><li>Bring out more detail and provide a better listening experience than your computer can deliver, even when listening to your favorite streaming service</li><li>Use the AK70 MKII as a USB DAC for playback support up to 24-bit, 96 kHz to deliver a richer sound through a larger soundstage and resolution</li><li>For DSD playback, simply install the DAC driver on your Windows/Mac computer and play DSD with ease</li></ul></li></ul></dd></dl><dl class="js-featureSectionDL" data-tickertarget="ov-ft-8"><dt class="featureTitle">AK Connect App</dt><dd class="c28"><ul><li>AK Connect, a DLNA-based music control app, is available on the AK70 MKII and smart devices including your phone or tablet</li><li>Easily control playback, volume, streaming over Wi-Fi, and more with this free app from Astell!#!amp!*!Kern</li><li>AK Connect allows for convenient access to all your connected music libraries including your smart devices, computers, NAS drive, other Astell!#!amp!*!Kern Wi-Fi-enabled products, or any other DLNA-compatible music system on your local network</li><li>AK Connect app is available for both iOS and Android devices</li></ul></dd></dl><dl class="js-featureSectionDL" data-tickertarget="ov-ft-9"><dt class="featureTitle">AK CD-Ripper</dt><dd class="c28"><ul><li>Rip CDs with ease by connecting to the AK CD-Ripper accessory</li><li>Rip your CDs directly to the AK70 MKII with 100% error-correction. When connected to Wi-Fi, all metadata for the CD being ripped will be downloaded from the Gracenote database, and all the tagging information will be stored for each album</li></ul></dd></dl></div><table class="specTable" data-selenium="specTable"><tbody data-selenium="specBody"><tr><td class="specTopic fs18" data-selenium="specTopic">Frequency Response</td><td class="specDetail fs18" data-selenium="specDetail">Unbalanced (20 Hz to 20 kHz): ±0.11 dB   Balanced (20 Hz to 20 kHz): ±0.09 dB Unbalanced (10 Hz to 70 kHz): ±0.5 dB Balanced (10 Hz to 70 kHz): ±0.5 dB  </td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Signal-to-Noise Ratio (SNR)</td><td class="specDetail fs18" data-selenium="specDetail">Unbalanced: 118 dB @ 1 kHz Balanced: 119 dB @ 1 kHz</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Crosstalk</td><td class="specDetail fs18" data-selenium="specDetail">Unbalanced: 136 dB @ 1 kHz Balanced: 138 dB @ 1 kHz</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">THD + N</td><td class="specDetail fs18" data-selenium="specDetail">Unbalanced: 0.0005% @ 1 kHz Balanced: 0.0005% @ 1 kHz</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">IMD SMPTE</td><td class="specDetail fs18" data-selenium="specDetail">Unbalanced: 0.0003% 800 Hz 10 kHz (4:1) Balanced: 0.0003% 800 Hz 10 kHz (4:1)</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Output Impedance</td><td class="specDetail fs18" data-selenium="specDetail">Balanced Output (2.5 mm): 3 Ohms  Headphone Output (1/8" / 3.5 mm): 1.5 Ohms</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Clock Jitter</td><td class="specDetail fs18" data-selenium="specDetail">45 ps (typical)</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Battery</td><td class="specDetail fs18" data-selenium="specDetail">Li-Polymer Battery: 2500 mAh, 3.7 V</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Built-In Memory</td><td class="specDetail fs18" data-selenium="specDetail">64 GB</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Supported OS</td><td class="specDetail fs18" data-selenium="specDetail">Windows 7, 8, 10 (32-/64-bit) Mac OS X 10.7 and up</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Material of Construction</td><td class="specDetail fs18" data-selenium="specDetail">Aluminum</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Display</td><td class="specDetail fs18" data-selenium="specDetail">TFT LCD: 3.3" / 83.8 mm, WVGA (480 x 800)</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Supported Audio Formats</td><td class="specDetail fs18" data-selenium="specDetail">WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Sample Rate</td><td class="specDetail fs18" data-selenium="specDetail">PCM: 8 to 192 kHz (8-/16-/24-bits per sample) DSD: DSD64 (1-bit, 2.8 MHz), stereo / DSD128 (1-bit, 5.6 MHz)</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Output Level</td><td class="specDetail fs18" data-selenium="specDetail">Condition: No load Unbalanced: 2.0 Vrms Balanced: 4.0 Vrms</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">DAC</td><td class="specDetail fs18" data-selenium="specDetail">2 x Cirrus Logic CS4398</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Decoding</td><td class="specDetail fs18" data-selenium="specDetail">Support up to 24-bit / 192 kHz (bit-to-bit decoding)</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Input</td><td class="specDetail fs18" data-selenium="specDetail">USB Micro-B Input: For charging and data transfer (Windows and Mac) Connection Mode: MTP (media device)</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Outputs</td><td class="specDetail fs18" data-selenium="specDetail">Headphones: 1/8" / 3.5 mm Balanced Output: 2.5 mm, only 4-pole supported</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Wi-Fi</td><td class="specDetail fs18" data-selenium="specDetail">802.11 b/g/n (2.4 GHz)</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Bluetooth</td><td class="specDetail fs18" data-selenium="specDetail">V4.0 (A2DP, AVRCP, aptX HD)</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Firmware Updates</td><td class="specDetail fs18" data-selenium="specDetail">Firmware upgrades supported (OTA)</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Dimensions (W x H x D)</td><td class="specDetail fs18" data-selenium="specDetail">2.5 x 3.8 x 0.6" / 62.7 x 96.8 x 15.0 mm</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Weight</td><td class="specDetail fs18" data-selenium="specDetail">5.29 oz / 150.00 g</td></tr></tbody></table><table class="specTable" data-selenium="specTable"><tbody data-selenium="specBody"><tr><th class="specHeader Header" colspan="2" data-selenium="specHeader"><a name="shipping" id="shipping" data-selenium="specHeaderLink" class="fs32 OpenSans-300-normal"></a>Packaging Info</th></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Package Weight</td><td class="specDetail fs18" data-selenium="specDetail">0.75 lb</td></tr><tr><td class="specTopic fs18" data-selenium="specTopic">Box Dimensions (LxWxH)</td><td class="specDetail fs18" data-selenium="specDetail">5.1 x 3.8 x 1.9"</td></tr></tbody></table><h5 class="bold fourteen" data-selenium="itemHeading"> <img src="//gdetail.image-gmkt.com/627/716502103/2016/8/92dd6b07-d087-4556-bb3b-80b1e54de28d.jpg" onerror="this.src='https://gdetail.image-gmkt.com/627/716502103/2016/8/92dd6b07-d087-4556-bb3b-80b1e54de28d.jpg'; $(this).attr('onerror','');" > </h5>

AstellKern AK70 MKII Portable High-Resolution Audio Player and USB DAC - 1 YEAR WARRANTY