{"product_id":"questyle-m18i-max","title":"Questyle M18i Max Portable DAC\/Amp — Dual ES9219Q, LDAC, 4.4mm Balanced","description":"\u003cp class=\"tp-summary\"\u003eThe Questyle M18i Max is a portable USB and Bluetooth DAC\/headphone amp built on two ESS ES9219Q chips with current-mode amplification, 3.5mm single-ended and 4.4mm balanced outputs, and an 1800mAh battery rated up to 12 hours on Bluetooth. It suits IEM and headphone listeners who want one box for wired USB playback and LDAC or aptX Adaptive Bluetooth from a phone.\u003c\/p\u003e\n\u003ch2\u003eWho the Questyle M18i Max is for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eiPhone, Android and computer listening:\u003c\/strong\u003e Apple MFi certification and a 16-core XMOS XU316 USB controller let it work as a driver-free USB DAC with iPhone, iPad, Android phones, Macs and Windows 10 PCs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless listening from your phone:\u003c\/strong\u003e Bluetooth 5.4 with Snapdragon Sound and LDAC certification supports AAC, SBC, aptX, aptX HD, aptX Adaptive, LDAC at 24-bit\/96kHz and LE Audio, so the phone can stay in a pocket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced IEMs and harder-to-drive headphones:\u003c\/strong\u003e It has 3.5mm single-ended and 4.4mm balanced jacks, two gain settings and four current-mode amplifier circuits with 1.5A peak output current; Questyle says it can drive everything from IEMs to high-impedance and planar headphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong days away from a charger:\u003c\/strong\u003e The 1800mAh battery is rated for 12 hours over Bluetooth or 7 hours as a USB DAC, and a separate USB-C charging port lets you charge while you listen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalls and desk setups:\u003c\/strong\u003e A built-in Infineon microphone with Qualcomm cVc 8.0 handles hands-free calls, and Questyle notes it can feed powered speakers through 3.5mm-to-RCA or 4.4mm-to-XLR cables (not included).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkip it if:\u003c\/strong\u003e you want a stick-sized dongle or need files beyond PCM 384kHz and DSD256 — the M18i Max is an 86 × 55 × 15mm unit with its own battery, and Lightning iPhones need Questyle's LTC02 Lightning to USB-C cable, sold separately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuestyle M18i Max key specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDAC:\u003c\/strong\u003e Dual ESS ES9219Q in a dual-mono layout with Questyle TTA three-tier decoding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB input:\u003c\/strong\u003e USB-C with XMOS XU316; PCM 44.1–384kHz (16\/24\/32-bit), DSD64\/128\/256\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth:\u003c\/strong\u003e 5.4, Snapdragon Sound and LDAC certified; AAC, SBC, aptX, aptX HD, aptX Adaptive, LDAC (24-bit\/96kHz), LE Audio\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e 3.5mm single-ended, 4.4mm balanced\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier:\u003c\/strong\u003e Two SiP modules with four current-mode circuits; 1.5A peak output current; High and Standard gain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e THD+N 0.0002%; frequency response ±0.1dB (20Hz–20kHz), ±2dB (20Hz–80kHz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e 1800mAh; up to 12 h on Bluetooth, 7 h as a USB DAC; separate USB-C charging port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay and build:\u003c\/strong\u003e OLED display; CNC-machined anodized aluminum in Tech Black; 86 × 55 × 15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e iOS and iPadOS (Apple MFi), Android, macOS, Windows 10; Lightning devices need the LTC02 cable (sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e M18i Max, USB-C to USB-C cable, USB-C to USB-A adapter, user manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"tp-trust\"\u003eGenuine Questyle stock. Free shipping on every order, 45-day returns.\u003c\/p\u003e","brand":"Questyle","offers":[{"title":"Default Title","offer_id":46346639212679,"sku":"Questyle M18i MAX","price":455.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/11867983203.jpg?v=1793184557","url":"https:\/\/tonepier.com\/products\/questyle-m18i-max","provider":"TonePier","version":"1.0","type":"link"}