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This page lists the complete technical specifications for the FiiO JadeAudio KA1 portable USB dongle DAC/amp. The KA1 is an ultra-compact all-in-one ESS ES9281AC PRO DAC/amp with MQA rendering support, measuring just 40 × 15 × 8mm. All specs sourced from the FiiO official product page.
Overall Rating: 7.5/10 — Outstanding portability and clean ESS audio quality for the price, limited by single-ended output only and modest power.
Full Specifications
DAC and Amplifier
| DAC/Amp Chip | ESS ES9281AC PRO (integrated USB + DAC + Amp) |
| Audio Formats | PCM up to 384kHz/32bit |
| DSD Support | DSD256 (Native), DSD128 (DoP) |
| MQA | Yes — certified MQA Renderer |
| Headphone Output | 3.5mm single-ended |
Connectivity
| USB Connector | Type-C |
| Platform Compatibility | Android, iOS (Lightning adapter), Windows, Mac |
| Driver Required | No — plug and play |
Physical
| Dimensions | 40 × 15 × 8mm |
| Weight | ~4g |
| RGB Indicator | Blue (PCM ≤48kHz), Yellow (PCM >48kHz), Green (DSD), Magenta (MQA) |
Where to Buy
Supports high resolution sound]: KA1 mini headphone amp supports up to 32bit/384kHz PCM and DSD512 high-end decoding.[Compatible with Android/Windows]: KA1 tiny amplifier can support multi-devices, supports smartphone/portable player/tablet/computer.[Supports MQA 8x rendering]: KA1 portable...
