{"type":"firestarter.listing","listing":{"id":"lst_Cj8cd56m","product_name":"E1DA 9038D6K USB Headphone Amp 3.5mm Jack Unbalanced Output DAC+HPA","category":"Headphone AMP DAC","description":"\nNote: Before you buy this product, please read the FAQ carefully.\n\n\n\nhttps://e1dashz.wixsite.com/index/faq\n\n\n\nWelcome to join our discord channel.\n\n\n\nhttps://discord.gg/U9Z28KC\n\n\n\n \n\n\n\n\n\n\n\n\n \n#9038D6K\n\n\n\nAccording to multiple headfiers requests: 3.5mm jack unbalanced output DAC+HPA 180mW@32ohm in the same case as #9038SG3. The same as 9038SG3, 9038D6K will work with Tweak app. The DAC has virtually zero noise modulation behavior.\n\n\n\nSpecifications:\n\n\n\nStatus: Production\n\n\n\nMaterials: Sandblasted/black anodized aluminum/laser mark/ES9038Q2M/OPA1622/OPA1602\n\n\n\nSusumu resistors, Murata C0G caps, AVX tantalum caps, Taiwanese connectors\nDimensions: 48x22x9mm\nWeight: 12g\nPower: USB +5V rail no internal battery, 105mA idle current, the device contains &gt;6000uF of capacitance for the power rails filtering\nInput: USB-C, PCM up to 32b/384kHz, DSD256\nUSB bridge Comtrue CT7601CR custom FW\nOutput: Standard unbalanced output 3.5mm jack, HW volume control .5db/step\nOutput impedance: .07 Ohm@1000Hz Agilent U1733C\nOutput power:\n180mW@32 Ohm@1kHz@THD=1%\n120mW@16 Ohm@1kHz@THD=1%\nMeasured at +.5dbFS level, typical PC USB2 port powered\nThe hot unit produces less power\nFrequency Response: 5-80kHz +.05/-1db@ 32b/384kHz\nSNR=DR@50MHz_MCLK:  126db(A) typical, referenced to 2.75VRMS\n\n\n100% units are calibrated with the result printed on the case, &gt;124db(A) is normal grade\n\nPlease note, any user with Cosmos APU may calibrate 9038D by themself for particular headphones.\nINAD@1kHz@-.7dbFS BW 22-22kHz 118-120+db typical for 32b/44.1kHz@no-load\nTHD@1kHz@-.5dbFS BW 22-22kHz &lt;.0001% typical for 24b/44.1kHz@no-load\nTHD+N@1kHz@-2.5dbFS BW 22-22kHz .00018%, SINAD 115db typical 24b/44.1kHz@32ohmTHD+N@1kHz@-7dbFS BW 22-22kHz .0005% typical for 24b/44.1kHz@16ohm(-6dbfs correspods 120mW)\nCrosstalk: -135db@1kHz no-load,\n-82db@1kHz 32ohm load\nThe Windows driver is here.\nFW tools are here\nWarning: 9038D6K contains a high-sensitive I/V stage that may cause audible noise when your phone uses LTE,4G,5G.","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/products/e1da-9038d6k-usb-headphone-amp-35mm-jack-unbalanced-output-dachpa-headphone-amp-dac-hifigo-945562.jpg?v=1670832983","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/e1da-9038d6k-usb-headphone-amp-35mm-jack-unbalanced-output-dachpa-headphone-amp-dac-hifigo-954941.jpg?v=1670834159","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/e1da-9038d6k-usb-headphone-amp-35mm-jack-unbalanced-output-dachpa-headphone-amp-dac-hifigo-979976.jpg?v=1670833887","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/e1da-9038d6k-usb-headphone-amp-35mm-jack-unbalanced-output-dachpa-headphone-amp-dac-hifigo-297805.jpg?v=1670833942","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/e1da-9038d6k-usb-headphone-amp-35mm-jack-unbalanced-output-dachpa-headphone-amp-dac-hifigo-256080.jpg?v=1670832092","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/e1da-9038d6k-usb-headphone-amp-35mm-jack-unbalanced-output-dachpa-headphone-amp-dac-hifigo-114282.jpg?v=1670833453"],"price":135,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:30.720Z"},"share_url":"https://firestarter.network/l/lst_Cj8cd56m","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_Cj8cd56m' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy E1DA 9038D6K USB Headphone Amp 3.5mm Jack Unbalanced Output DAC+HPA' and a budget_max comfortably above $135.00 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}