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The manufacturer also publishes headphone-impedance guidance, though this evidence pass did not independently verify long-duration behavior or power efficiency.","title":"Power and flexibility"}],"article":{"sections":[{"heading":"A portable DAC built for two roles","paragraphs":[{"claim_ids":["c_dac_architecture","c_desktop_power","c_portable_fit"],"kind":"factual","paragraph_id":"p_overview_1","text":"The KA17 combines a dual-DAC USB architecture with a separate power input, allowing the same unit to serve mobile listening and a powered desk setup."},{"claim_ids":["c_display","c_outputs","c_firmware"],"kind":"factual","paragraph_id":"p_overview_2","text":"Its interface includes a display, physical controls, single-ended and balanced headphone outputs, plus USB firmware updates."}],"section_id":"section_overview","section_type":"overview"},{"heading":"Power, matching, and sound","paragraphs":[{"claim_ids":["c_output_power","c_matching"],"kind":"factual","paragraph_id":"p_perf_1","text":"In the cited balanced Desktop Mode result, output reaches 650 mW per channel. 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The documented practical tradeoffs are chassis size and some warmth during use.","claim_ids":["c_limit_size","c_heat"],"faq_id":"faq_limits","intent":"limitation","question":"What remains uncertain from the available evidence?","source_ids":["source_snapshot_cb255e6f13bcb4086066cc0f334a8cbaf531f10e39adfe3f9d687c3fcea71719","source_snapshot_d3408539d83b023ff2d8cf85c043a631081e86fd227b8403f9e6c352bde61f06"]}],"measurements":[{"claim_id":"c_output_power","conditions":{"method":"Bench power output test into 32 ohm load in Desktop Mode with auxiliary power supply","notes":"Measured maximum balanced output power into 32 ohm load in Desktop Mode.","sample_size":1,"standard":null},"lab":"Headfonia Audio Testing Laboratory","measurement_id":"m_power","metric":"output_power","source_id":"source_snapshot_7c3a0164a8aafa96e40ec0ba614f47310a80b6f145c1f2318e283aa0c63bc990","unit":"mW","value":650},{"claim_id":"c_weight","conditions":{"method":"Digital precision balance measurement of compact DAC/amp body","notes":"Measured weight of the compact DAC amplifier body without cables.","sample_size":1,"standard":null},"lab":"FiiO Acoustic Engineering Laboratory","measurement_id":"m_weight","metric":"weight","source_id":"source_snapshot_09c001328cd2875333055e1569eb696adc6e1ef506448137a454d45a5697ac39","unit":"g","value":33.5}],"ownership_costs":[],"price_contexts":[],"usage_scenarios":[{"assessment":"conditional","claim_ids":["c_portable_fit","c_usb_host","c_display","c_outputs","c_limit_size","c_heat"],"gap_reason":null,"limitations":["It is larger than an average dongle and can become slightly warm in use."],"scenario_id":"scenario_commute","situation":"A listener wants a pocketable USB DAC for a phone or laptop.","title":"Portable listening with wired headphones"},{"assessment":"conditional","claim_ids":["c_desktop_power","c_output_power"],"gap_reason":null,"limitations":["Sustained-load and efficiency evidence was not found in the reviewed sources."],"scenario_id":"scenario_desk","situation":"A listener wants extra output at a desk without buying a second DAC.","title":"One DAC for mobile and desk use"},{"assessment":"conditional","claim_ids":["c_peq","c_firmware"],"gap_reason":null,"limitations":["The evidence did not independently verify long-term app or firmware support."],"scenario_id":"scenario_eq","situation":"A listener wants reusable device-level sound adjustments.","title":"Headphone tuning with parametric EQ"}]}},"source_schema_version":"product-research-package-v7","sources":[{"number":1,"publisher":"Pragmatic Audio","title":"FiiO KA17","url":"https://www.pragmaticaudio.com/reviews/2024/02/fiio-ka17/"},{"number":2,"publisher":"Prime Audio Reviews","title":"FiiO KA17 Review","url":"https://primeaudio.org/fiio-ka17-review/"},{"number":3,"publisher":"Porta-Fi","title":"FiiO KA17 Review","url":"https://porta-fi.com/fiio-ka17-review/"},{"number":4,"publisher":"Headfonia","title":"FiiO KA17 Review","url":"https://www.headfonia.com/fiio-ka17-review/"},{"number":5,"publisher":"Headfonics","title":"FiiO KA17 Review","url":"https://headfonics.com/fiio-ka17-review/"},{"number":6,"publisher":"FiiO","title":"KA17_parameters","url":"https://www.fiio.com/KA17_parameters"}]}