FiiO K9 Pro ESS MQA Wireless Bluetooth, Wired Desktop Headphone Amplifier & USB DAC
- High performance Dual ES9038PRO DAC chip
- Superior THX AAA 788+ Amplification Module
- MQA Decoding Support
- Headphone Out(6.35mm Single-Ended/4.4mm Balanced/4-pin XLR)
- Customised THX AAA Amplification Module
- Hi-res PCM Decoding up to 32-Bit/384kHz. (USB Input)
- DSD Support up to DSD256 natively. (USB Input)
- Coaxial Input supports PCM up to 192kHz and DoP64
- Hi-End Parameters & Configuration
- Hi-resolution Bluetooth Support with latest Qualcomm 5124 Bluetooth Chip
- LDAC/AptX Adaptive/aptX LL/aptX HD/AAC/SBC and other hi-res Bluetooth Codec Support
- Dual femtosecond clocks under USB & Bluetooth decoding
- Dual voltage linear transformer
- Truly balanced design
- Digital Inputs: Bluetooth/Coaxial/Optical/USB
- Three-Level Gain Mode: Low, Medium, High
- Wide connector selection
- App Control
Product Availability | Discontinued |
Product Type | DAC (Digital-Analog Converter), Amplifier (Headphone) |
Style/Type | Desktop |
Features | Bluetooth, Line-out, Line-in, Dual Headphone Output, High-Res Audio Certified, DSD, MQA (Master Quality Authenticated) |
Connectivity | Wireless & Wired |
DAC | ESS Sabre ES9038PRO x 2 (Dual) |
Op-Amp / Amplifier | THX AAA 788+ x 2 (Dual) |
Bluetooth Version | v5.0 |
Bluetooth Codecs | SBC, AAC, aptX, aptX Low Latency (aptX-LL), aptX HD, aptX Adaptive, LDAC |
Sampling / Bitrate | 32-Bit/384kHz |
Frequency Response (Hz) | Up to 20Hz~50kHz (6.35mm SE, 4.4mm/XLR Bal) |
Impedance (Ω) | <1Ω(32Ω) |
Signal-to-Noise Ratio (SNR) | ≥123dB (dbA) |
Total Harmonic Distortion (THD) | <0.0005% (1 kHz/32Ω/dbA) |
Max Output Power (mW / W) | Up to ≥2.1W(32Ω/THD+N<1%) |
Voice Assistants | - None - |
Streaming Services | N.A |
Mic for Calls/Communication | None |
Input Connectivity Options | Bluetooth, RCA (Subwoofer; Single) |
Output Connectivity Options | XLR (Dual 3-Pin) [Balanced], RCA (Line-Out), 6.35mm Stereo |
Driveability (Output Impedance) (Ω) | 16~600 Ω |
Colour | Black |
Product Dimensions | 200 x 224.5 x 72mm (excluding feet) |
Product Weight (g) | 2750g |
Additional Tech Specs | Refer to official FiiO website for full Technical Specifications |
Warranty | 1 year warranty (local) |
If you're based in Singapore,
- spend $300 or more for free doorstep delivery1.
($250 for Silver/Gold/Platinum VIP members) - add a few more bucks, for delivery during the night/weekend, or quicker prioritised delivery options2.
- self-collection is possible at our Showroom, based in Ubi (nearest to MacPherson MRT). Find out where, and how to get to us here.
- and yes, you may arrange your own 3rd party logistics to pickup your purchases on your behalf.
GrabExpress, Lalamove, GoGoX, RydeSEND services are welcome.
View additional Terms & Conditions associated to local doorstep delivery service.
Friends from Overseas,
- we do ship internationally.
- shipping fees are calculated according to total gross actual or volumetric weight of all item(s) in cart, whichever higher.
- shipping fees will vary depending on international carrier(s)3, and will be displayed during checkout.
- do be aware of additional import tax/VAT that may apply.
Due to recent changes in U.S. trade regulations, additional tariffs are being imposed on products manufactured in China and imported into the United States. As many of our audio products are made in China, orders shipped to U.S. addresses may be subject to an added tariff charge at checkout, reflected as a "U.S. Import Tariff Surcharge". Please note that this surcharge amount is determined by U.S. import policies and may vary significantly depending on product categories and any future policy adjustments. These charges are necessary to ensure compliance with U.S. customs requirements and to allow us to continue serving our U.S. customers reliably. We strongly encourage you to review the total cost at checkout before placing your order.
View additional Terms & Conditions associated to international door to door shipping service.
1 Terms and condition do apply for free delivery. For more information, click here to view.
2 View our updated list of local delivery options.
3 View our updated list of international carriers.
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Product Availability | Discontinued |
Product Type | DAC (Digital-Analog Converter), Amplifier (Headphone) |
Style/Type | Desktop |
Features | Bluetooth, Line-out, Line-in, Dual Headphone Output, High-Res Audio Certified, DSD, MQA (Master Quality Authenticated) |
Connectivity | Wireless & Wired |
DAC | ESS Sabre ES9038PRO x 2 (Dual) |
Op-Amp / Amplifier | THX AAA 788+ x 2 (Dual) |
Bluetooth Version | v5.0 |
Bluetooth Codecs | SBC, AAC, aptX, aptX Low Latency (aptX-LL), aptX HD, aptX Adaptive, LDAC |
Sampling / Bitrate | 32-Bit/384kHz |
Frequency Response (Hz) | Up to 20Hz~50kHz (6.35mm SE, 4.4mm/XLR Bal) |
Impedance (Ω) | <1Ω(32Ω) |
Signal-to-Noise Ratio (SNR) | ≥123dB (dbA) |
Total Harmonic Distortion (THD) | <0.0005% (1 kHz/32Ω/dbA) |
Max Output Power (mW / W) | Up to ≥2.1W(32Ω/THD+N<1%) |
Voice Assistants | - None - |
Streaming Services | N.A |
Mic for Calls/Communication | None |
Input Connectivity Options | Bluetooth, RCA (Subwoofer; Single) |
Output Connectivity Options | XLR (Dual 3-Pin) [Balanced], RCA (Line-Out), 6.35mm Stereo |
Driveability (Output Impedance) (Ω) | 16~600 Ω |
Colour | Black |
Product Dimensions | 200 x 224.5 x 72mm (excluding feet) |
Product Weight (g) | 2750g |
Additional Tech Specs | Refer to official FiiO website for full Technical Specifications |
Warranty | 1 year warranty (local) |
No Reviews Available Yet. Leave Your Review

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