{"product_id":"questyle-cma-18-portable-dac-amp-open-box","title":"Questyle CMA 18 Portable DAC\/Amp (Open Box)","description":"\u003ch2\u003eEmbrace Every Possibility, Compromise None.\u003c\/h2\u003e\n\u003cp\u003eSmall in size, big on performance. The Questyle CMA18 Portable is a flagship mobile DAC\/amp, featuring a distinctive, flawless, and unique design, in a portable form. Portability no longer implies a compromise in performance.\u003c\/p\u003e\n\u003cp\u003eThe CMA18 Portable was primarily designed to create a Hi-Fi system for smartphones and laptops, aiming to achieve performance comparable to top-tier desktop setups, within a portable size.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Questyle CMA 18 Portable DAC\/Amp Overview\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/1.1_90fd2fe3-aa5f-47e2-8ee2-8a7815e588c6_2048x2048.png?v=1708367180\"\u003e\u003c\/p\u003e\n\u003ch3\u003eDesign and Craftsmanship\u003c\/h3\u003e\n\u003cp\u003eSandblasted aviation-grade aluminum surfaces with silver high-gloss buttons and side panels, custom Corning glass on both the front and back with a gradient dot pattern, and an RF signal-suppressing coating give the CMA18 Portable a unique appearance while outlining its hardcore performance.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Questyle CMA 18 Portable DAC\/Amp Design\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/1.2_74edcf35-e9eb-4b15-83e5-5eccaafd116c_2048x2048.png?v=1708367210\"\u003e\u003c\/p\u003e\n\u003ch3\u003ePerformance\u003c\/h3\u003e\n\u003cp\u003eCMA18 Portable incorporates four sets of patented PCT-class current-mode SiP chips, each with a peak power of up to 5W and a peak current of 2A, delivering robust driving power. Gain settings, coupled with high-energy current-mode amplifier technology, ensure powerful and flexible performance.\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput power:\u003c\/strong\u003e \u0026gt;1W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstantaneous output current:\u003c\/strong\u003e Up to 2A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFour sets of self-developed current-mode PCT patented SIP chips, CC630\/CA630, ensure the best thrust and lowest power consumption in the industry, coupled with 4.4mm headphone output and high\/low gain mode switching, unlocking the full potential of all IEMs and top-tier over-ear headphones.\u003cbr\u003e\u003cem\u003eOptional 3.5mm\/4.4mm headphone jacks and gain switching ensure precise matching with any headphones.\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour sets of self-developed current-mode patented SIP chips:\u003c\/strong\u003e CC630\/CA630\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAKM DAC chip:\u003c\/strong\u003e AK4493\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional D\/A converting capabilities:\u003c\/strong\u003e PCM768 | 32Bit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLatest XMOS USB platform:\u003c\/strong\u003e XU316\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e*Bluetooth mode supports both aptX HD and LDAC, ensuring optimal wireless sound quality with a stable wireless connection.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eClean from the Source\u003c\/h3\u003e\n\u003cp\u003eThe CMA18 Portable's 4300mAh lithium battery power management system ensures the purest sound quality and isolates top-tier performance from the power supply dependence of smartphones and PCs.\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLithium battery power management system:\u003c\/strong\u003e 4300mAh\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery life:\u003c\/strong\u003e 10h\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"Questyle CMA 18 Portable DAC\/Amp Performance\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/1.3_ea99a927-13fb-4a0a-a906-82dfe7fa2c07_2048x2048.png?v=1708367253\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\n\u003cbr\u003eAnalog Input Recording Function\u003c\/h2\u003e\n\u003cp\u003eThe CMA18 Portable has two stereo line-in inputs - 3.5mm (AUX IN) and 4.4mm (BAL IN). They can be connected to any audio equipment that has line-out analog outputs, including turntable systems, pre-amps, mixing consoles, and more. Once connected, the CMA18 Portable is capable of functioning as an external, lossless, high-performance analog-to-digital (ADC) recording device for either of these inputs. It also allows the user to simultaneously monitor the input during the recording process via the 3.5mm or 4.4mm outputs.\u003cbr\u003eHow to use the recording function: When the CMA18 Portable is set to either AUX IN or BAL IN mode and connected via USB to a host device (any phone, tablet, or computer, etc that ensures the recording over USB sound cards), both the USB connection and REC indicator lights will appear, signaling that the recording function is enabled. There are no special requirements for recording software as long as it supports recording via an external USB sound card\/audio interface.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Questyle CMA 18 Portable DAC\/Amp Analog Input\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/1.4_2dd2f950-262b-48a2-8f39-11de8319ef9e_2048x2048.png?v=1708367270\"\u003e\u003c\/p\u003e\n\u003ch3\u003eExpandability\u003c\/h3\u003e\n\u003cp\u003eGiven that high-resolution lossless streaming is accessible on smartphones and PCs, we have also considered the needs of audiophiles, as well as those interested in recording and musical production.\u003cbr\u003eThe user-friendly interface and powerful performance of CMA18 Portable - combined with Questyle's released 3.5mm-RCA and 4.4mm-XLR cables - enable the CMA18 Portable to connect to 2-channel Hi-Fi devices, bringing wonderful lossless music to your home. It also allows recording and musical production professionals to connect to monitor speakers and mixing consoles on-site.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Questyle CMA 18 Portable DAC\/Amp Compatibility\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/1.5_27a54621-16df-4028-8250-aa800fdd303a_2048x2048.png?v=1708367229\"\u003e\u003c\/p\u003e\n\u003ch2\u003eIN THE BOX\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCMA 18 Portable \u003c\/li\u003e\n\u003cli\u003eCharging cable\u003c\/li\u003e\n\u003cli\u003eUSB-C to USB-C OTG Cable\u003c\/li\u003e\n\u003cli\u003eUSB-C to Lightning OTG Cable\u003c\/li\u003e\n\u003cli\u003eQuickstart Guide\u003c\/li\u003e\n\u003cli\u003eWarranty Card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"Questyle CMA 18 Portable DAC\/Amp In The Box\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/1.6_c4fddafc-14f6-456c-ac39-674a9c9ddfcd_2048x2048.png?v=1708367593\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e\n\u003ch4\u003eUSB PLAYBACK\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum support:\u003c\/strong\u003e PCM768kHz\/32-bit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSD Native:\u003c\/strong\u003e DSD64, DSD128, DSD256, DSD512\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSD DoP:\u003c\/strong\u003e DSD64, DSD128, DSD256\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupports:\u003c\/strong\u003e UAC 2.0, Windows XP\/Vista\/7\/8\/10\/11, Linux, Android, HarmonyOS, macOS, and iOS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUSB RECORDING\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFixed 48Hz\/32bit Stereo Recording\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupports:\u003c\/strong\u003e Windows XP\/Vista\/7\/8\/10\/11, Linux, Android, HarmonyOS, macOS, and iOS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eINPUTS\u003c\/h3\u003e\n\u003ch4\u003eDigital\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eUSB-C\u003c\/li\u003e\n\u003cli\u003eOptical\/TOSLink: Supports 44.1kHz, 48kHz, 88.2kHz, 96kHz, 192kHz\/24bit\u003c\/li\u003e\n\u003cli\u003eBluetooth: SBC\/AAC\/aptX\/aptX-HD\/LDAC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAnalog\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e3.5mm stereo line-in\u003c\/li\u003e\n\u003cli\u003e4.4mm Balanced stereo line-in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAMPLIFICATION\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Headphone Output Power:\u003c\/strong\u003e BAL: 1000mW@32Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N:\u003c\/strong\u003e \u0026lt;0.0003%@20mW, 300Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR:\u003c\/strong\u003e \u0026gt;120dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone Outputs:\u003c\/strong\u003e 3.5mm SE and 4.4mm Balanced\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBATTERY\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlayback battery life:\u003c\/strong\u003e \u0026gt;10 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum charging current:\u003c\/strong\u003e 2A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging time:\u003c\/strong\u003e ~3.5 hour\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e1. What is the Questyle CMA18 Portable?\u003c\/strong\u003e\u003cbr\u003eThe Questyle CMA18 Portable is a flagship mobile DAC and amplifier designed to provide high-fidelity audio for smartphones and laptops, offering performance comparable to top-tier desktop setups, all in a compact, portable form.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. What devices are compatible with the CMA18 Portable?\u003c\/strong\u003e\u003cbr\u003eThe CMA18 Portable is compatible with a wide range of devices, including Windows, macOS, Android, iOS, HarmonyOS, and Linux devices. It can connect via USB-C, Bluetooth (supporting aptX HD and LDAC), optical, and analog inputs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. What are the key audio formats supported by the CMA18 Portable?\u003c\/strong\u003e\u003cbr\u003eThe CMA18 Portable supports a variety of high-resolution formats, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePCM 768kHz\/32-bit\u003c\/li\u003e\n\u003cli\u003eDSD Native (DSD64, DSD128, DSD256, DSD512)\u003c\/li\u003e\n\u003cli\u003eDSD DoP (DSD64, DSD128, DSD256)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e4. Does the CMA18 Portable support Bluetooth?\u003c\/strong\u003e\u003cbr\u003eYes, the CMA18 Portable supports Bluetooth with the latest aptX HD and LDAC codecs for high-quality wireless audio streaming.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. Can I record audio using the CMA18 Portable?\u003c\/strong\u003e\u003cbr\u003eYes, the CMA18 Portable features two analog input options (3.5mm AUX IN and 4.4mm BAL IN) that allow it to function as an external, lossless analog-to-digital converter (ADC) for recording. When connected to a host device (smartphone, tablet, or computer), it enables high-performance recording with a fixed 48kHz\/32-bit stereo quality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. What type of output does the CMA18 Portable provide?\u003c\/strong\u003e\u003cbr\u003eThe CMA18 Portable offers both 3.5mm single-ended and 4.4mm balanced headphone outputs, ensuring compatibility with a wide range of headphones and IEMs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7. How powerful is the CMA18 Portable’s amplifier?\u003c\/strong\u003e\u003cbr\u003eThe amplifier in the CMA18 Portable delivers a maximum headphone output power of 1000mW at 32Ω. It’s designed to drive both low-impedance IEMs and high-impedance over-ear headphones with ease.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e8. What is the battery life of the CMA18 Portable?\u003c\/strong\u003e\u003cbr\u003eThe CMA18 Portable offers over 10 hours of playback on a single charge, thanks to its 4300mAh lithium battery. It takes around 3.5 hours to fully charge using a 2A charger.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e9. How portable is the CMA18?\u003c\/strong\u003e\u003cbr\u003eThe CMA18 Portable is designed with portability in mind, featuring sandblasted aviation-grade aluminum, compact dimensions, and a lightweight form factor. It’s built for audiophiles who want studio-grade audio on the go.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10. Can I use the CMA18 Portable as part of a home Hi-Fi system?\u003c\/strong\u003e\u003cbr\u003eYes, the CMA18 Portable is highly versatile and can be connected to 2-channel Hi-Fi devices using Questyle’s optional 3.5mm-RCA and 4.4mm-XLR cables. It also works well for professional audio recording and production, enabling connections to monitor speakers and mixing consoles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e11. What’s included in the box with the CMA18 Portable?\u003c\/strong\u003e\u003cbr\u003eIn the box, you’ll find:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCMA18 Portable DAC\/Amp\u003c\/li\u003e\n\u003cli\u003eCharging cable\u003c\/li\u003e\n\u003cli\u003eUSB-C to USB-C OTG cable\u003c\/li\u003e\n\u003cli\u003eUSB-C to Lightning OTG cable\u003c\/li\u003e\n\u003cli\u003eQuickstart guide\u003c\/li\u003e\n\u003cli\u003eWarranty card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e12. Does the CMA18 Portable have gain settings?\u003c\/strong\u003e\u003cbr\u003eYes, the CMA18 Portable features high\/low gain switching, making it adaptable for use with a variety of headphones, from sensitive in-ear monitors (IEMs) to power-hungry over-ear models.\u003c\/p\u003e\n\u003ch2\u003eAbout Questyle\u003c\/h2\u003e\n\u003cp\u003eFounded in Shenzhen in 2012, \u003ca href=\"https:\/\/audio46.mom\/collections\/questyle\" rel=\"noopener\" target=\"_blank\" title=\"Questyle Audio\"\u003eQuestyle\u003c\/a\u003e designs and manufactures high-tech lossless consumer audio products. Questyle's mission is to solve technical issues, overcome environmental constraints, and use a simple and free-spirited approach to provide users with a wonderful immersive audio experience.\u003c\/p\u003e","brand":"Questyle","offers":[{"title":"Default Title","offer_id":47090685116649,"sku":"CMA 18 Portable (OB)","price":629.1,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/cma18-1_76a46ccc-173d-45a7-ae26-bcaab3ae89f4.png?v=1762466851","url":"https:\/\/audio46.mom\/products\/questyle-cma-18-portable-dac-amp-open-box","provider":"Audio46 Headphone Store","version":"1.0","type":"link"}