18 Best Fiio E9K Manual of 2025 – Romance University
After hours researching and comparing all models on the market, Romance University finds out Top 18 Best Fiio E9K Manual of 2025. Check our ranking below.
2,110 Reviews Scanned
Rank No. #1
FiiO M33 R2R Portable HiFi Music Player, Snapdragon 680, 8GB RAM + 128GB Storage, True R2R DAC, XMOS XU316 USB Audio, 1100mW Balanced Output, AUTO EQ, 5.5” Full HD Display (Dark Blue)
- Flagship Performance with Massive Storage Built on Qualcomm Snapdragon 680 with 8GB RAM and 128GB internal storage, ensuring smooth multitasking, fast streaming, and long-term system stability far beyond its class.
- Dedicated XMOS XU316 for Superior USB Audio Features a standalone XMOS XU316 USB audio processor, delivering ultra-low latency and consistent high-quality performance for music and video playback across all platforms.
- True Portable R2R HiFi Player FiiO’s first portable player built around a self-developed R2R resistor ladder DAC, faithfully translating desktop-grade R2R architecture into a compact form. Offers two sound profiles: FLAT (neutral) and WARM (smooth, analog-inspired).
- Immersive 5.5” Full HD Display, Lightweight Design A 5.5-inch 1080×2160 touchscreen with cassette, spectrum, and VU meter themes enhances both visual immersion and listening ritual. Weighing only 258g, with an AG matte glass back for comfortable daily use.
- AUTO EQ for Effortless Sound Matching Supports AUTO EQ, automatically matching headphone frequency curves for precise, lossless tuning. Additional preset and manual EQ options allow deep customization.
Rank No. #2
FiiO M33 R2R Portable HiFi Music Player, Snapdragon 680, 8GB RAM + 128GB Storage, True R2R DAC, XMOS XU316 USB Audio, 1100mW Balanced Output, AUTO EQ, 5.5” Full HD Display (Vintage Gold)
- Flagship Performance with Massive Storage Built on Qualcomm Snapdragon 680 with 8GB RAM and 128GB internal storage, ensuring smooth multitasking, fast streaming, and long-term system stability far beyond its class.
- Dedicated XMOS XU316 for Superior USB Audio Features a standalone XMOS XU316 USB audio processor, delivering ultra-low latency and consistent high-quality performance for music and video playback across all platforms.
- True Portable R2R HiFi Player FiiO’s first portable player built around a self-developed R2R resistor ladder DAC, faithfully translating desktop-grade R2R architecture into a compact form. Offers two sound profiles: FLAT (neutral) and WARM (smooth, analog-inspired).
- Immersive 5.5” Full HD Display, Lightweight Design A 5.5-inch 1080×2160 touchscreen with cassette, spectrum, and VU meter themes enhances both visual immersion and listening ritual. Weighing only 258g, with an AG matte glass back for comfortable daily use.
- AUTO EQ for Effortless Sound Matching Supports AUTO EQ, automatically matching headphone frequency curves for precise, lossless tuning. Additional preset and manual EQ options allow deep customization.
Rank No. #3
FiiO M33 R2R Portable HiFi Music Player, Snapdragon 680, 8GB RAM + 128GB Storage, True R2R DAC, XMOS XU316 USB Audio, 1100mW Balanced Output, AUTO EQ, 5.5” Full HD Display (Black)
- Flagship Performance with Massive Storage Built on Qualcomm Snapdragon 680 with 8GB RAM and 128GB internal storage, ensuring smooth multitasking, fast streaming, and long-term system stability far beyond its class.
- Dedicated XMOS XU316 for Superior USB Audio Features a standalone XMOS XU316 USB audio processor, delivering ultra-low latency and consistent high-quality performance for music and video playback across all platforms.
- True Portable R2R HiFi Player FiiO’s first portable player built around a self-developed R2R resistor ladder DAC, faithfully translating desktop-grade R2R architecture into a compact form. Offers two sound profiles: FLAT (neutral) and WARM (smooth, analog-inspired).
- Immersive 5.5” Full HD Display, Lightweight Design A 5.5-inch 1080×2160 touchscreen with cassette, spectrum, and VU meter themes enhances both visual immersion and listening ritual. Weighing only 258g, with an AG matte glass back for comfortable daily use.
- AUTO EQ for Effortless Sound Matching Supports AUTO EQ, automatically matching headphone frequency curves for precise, lossless tuning. Additional preset and manual EQ options allow deep customization.
Rank No. #4
FiiO M21 Android 13 Portable Music Player MP3 Snapdragon 680 4* CS43198 DAC Chips Hi-Res Audio DSD Bluetooth LDAC (Black)
- A Brand-New Processor That Surpasses Competing Products — Qualcomm Snapdragon 680 Built on a 6nm process, it delivers superior performance and enhanced power efficiency. With 4GB+64GB storage and Android 13, it ensures smooth and seamless operation for all major music apps.
- Patented Desktop Mode with 950mW High Power Output: When Desktop Mode is activated, the M21 operates entirely on external power, with the built-in battery neither charging nor discharging—effectively extending battery lifespan.
- Quad CS43198 Matrix DACs, Fully Balanced 2-Stage Amplification: Featuring a 4-channel, 8-path fully differential output design, it unleashes its full potential with exceptional dynamic range and high noise immunity. The headphone amp adopts a 2-stage circuit design—the first stage handles voltage amplification while the second stage boosts current—ensuring pristine sound quality and rich detail.
- Versatile Ports, High-Performance Output: Supports dual 3.5mm + 4.4mm headphone/LO outputs, equipped with independent line amplification circuits. Also supports SPDIF and USB Audio output, with SPDIF performance rivaling professional digital transports—reducing jitter by 70%.
Rank No. #5
FiiO K17 Desktop DAC&Headphone Amplifier AK4191+AK4499EX*2, 31-Band PEQ, MQA,Support DSD512 32Bit/768kHz with Remote Control (Black)
- The FiiO K17 is the first to feature a discrete amplifier circuit, utilizing an OP + transistor current-driving headphone amplifier design. It is equipped with the On Semiconductor MJE243G/253G classic complementary pair, enabling high-current, low-impedance output. The balanced output power reaches up to 4000mW+4000mW, effortlessly driving both large headphones and in-ear monitors. The sound is smooth, natural, and melodious, delivering a pleasant listening experience.
- The device uses the AKM flagship DAC chip combination AK4191 + AK4499EX*2, with each AK4499EX handling one channel. This is paired with an 8-channel to 4-channel LPF design to reduce common-mode interference, resulting in better separation and dynamics. Additionally, it features a fully separated digital/analog structure based on a new design technology, incorporating the newly developed "DWA ROUTING technology" to further purify the background and enhance resolution.
- The FiiO K17 is equipped with the professional DSP chip M21586Q and the high-performance ADC ES9821Q, complemented by a custom-designed ultra-low phase noise femtosecond crystal oscillator. It offers a 31-band professional-grade high-precision lossless PEQ adjustment function across all input modes. This allows for simulation or correction of headphone frequency response curves.
- The FiiO K17 supports multiple input options, including single-ended line input, balanced line input, USB decoding, Bluetooth decoding, optical decoding, and coaxial decoding. The USB decoding uses the XMOS 16-core chip XU316, supporting 768kHz/32bit, DSD512, and full MQA decoding. Bluetooth decoding is powered by the Qualcomm QCC5125 chip, featuring Bluetooth 5.1 and supporting aptX HD, aptX Adaptive, LDAC, and other codecs. For streaming, it supports Roon Ready and AirPlay, giving you access to a vast array of streaming sources. Local playback is supported via external USB drives and portable hard drives, allowing you to enjoy your precious collection of audio files.
- The K17 features a custom-designed 3.93-inch LCD screen, allowing for quick switching between various settings and functions via touch controls. It also includes five independent control knobs, supporting one-button standby, and enabling fast adjustments for volume, gain, output, and more. The device comes with an infrared remote control for convenient long-distance operation, allowing you to easily switch between work modes, select EQ settings, and adjust volume.
Rank No. #6
FiiO K9 Pro ESS Desktop DAC and Amplifier, Precise Design, Fully Differential, Fully Balanced Design, RGB Indicator Lights
- [Supports up to 384 kHz and native DSD256]: The K9Pro ESS desktop DAC is equipped with the high performance dual ES9038PRO, supporting up to 384 kHz and native DSD256 audio.
- [Support lossless MQA renderer]: The K9Pro ESS amplifier supports the unfolding of MQA tracks, allowing you to listen to high-resolution audio files that are not only reasonably sized, but also retain master-level sound quality that brings you directly into the recording studio.
- [Bluetooth 5.1 and High Resolution Bluetooth]: The K9Pro ESS bluetooth headphone amps supports AAC/SBC/aptX/aptX LL/aptX HD/LDAC/aptX adaptive lossless bluetooth formats, it means you could get high resolution sound more convenient.
- [Plentiful playing ways]: ①Front: XLR 4-pin, 4.4mm balanced, 6.35mm single-ended headphone outputs ;②Rear: 4.4mm balanced Line in; coaxial, optical, RCA, XLR out; for more convenient connections to external amps or speakers; ③Side: USB Type-C port, for your player, mobile phone,PC.
- [DAC/AMP combos]: K9Pro ESS desktop amplifier can drive 600Ω power-hungry headphones. Connect to your pc, players as desktop dac, you also could play with your speaker or external amplifier.
Rank No. #7
FiiO R9 Android Media Streamer, Network Player, HDMI/MQA Full Decode, USB DAC, DSD512 PCM768kHz/32Bit Bluetooth 5.0, 6’’HD Touchscreen
- R9 is a flagship desktop high-definition audio playback and decoding headphone amplifier all-in-one machine, mainly used to connect headphones, active speakers, and other devices. Thanks to the flagship configuration and rich input and output interfaces, R9 can be used as a professional digital turntable, preamplifier, decoder, and also enjoy high-quality music streaming wirelessly and local network playback.
- Easy Control: In open Android mode, it's easy to operate the R9 through its 6-inch FHD touchscreen. Additionally, you can install and use third-party streaming applications such as Amazon Music, Apple Music, Tidal, Spotify, and more。
- Equipped with 8-channel ES9038PRO*2 + 8 THX AAA 788+, the performance and sound quality have been significantly enhanced. The output power of each channel remains undistorted at a high level of 7300mW under 32Ω, providing an exceptional audio experience for both earphones and headphones
- The R9 supports HDMI decoding, HDMI video output, and HDMI ARC. It can be connected to televisions, gaming consoles, Blu-ray players, monitors, and other devices, allowing for high-definition audio and video output for both entertainment and gaming.
- The R9 supports various functions such as DLNA, Airplay, and Roon Ready. It can be controlled through a remote control app or the included RM3 remote control, allowing for desktop or long-distance control.
Rank No. #8
FiiO M15S Music Player Snapdragon 660 with ES9038PRO Hi-Res Android 10 5.5inch MP3 Player WiFi/MQA/Bluetooth 5.0/Spotify/Tidal/Amazon Music Support
- [Desktop/portable dual power supplies] With the implementation of the dual power supply modes onto the M15 with its more ergonomic design, the M15S is the ideal combination of portability and high performance.
- [Five gain levels, 1200mW+1200mW continuous output power] Under USB power, the enhanced over-ear headphone gain level can enable undistorted power output up to 1200mW per channel, easily enough to drive a wide variety of IEMs and headphones.
- [ES9038PRO DAC] The full, uncut desktop ES9038PRO DAC chip with eight independent D/A converters is employed in the M15S.
- [QCC5124 with full Bluetooth format support] Bluetooth is handled by the Qualcomm QCC5124 chip that has a proven track record in other FiiO products, allowing the M15S to capably handle 2-way Bluetooth
- [Qualcomm 660+Android 10] With the stable and smooth combination of the Qualcomm Snapdragon 660 and Android 10, you can start listening quickly with the M15S.
Rank No. #9
FiiO K7 Full Balanced HiFi DAC Headphone Amplifier AK4493S*2, XMOS XU208 PCM384kHz DSD256,USB/Optical/Coaxial/RCA Inputs, 6.35mm/4.4mm Output (Titanium)
- The most competitive and cost-effective desktop balanced DAC/Amp within the 300-USD range;
- Adopts the six-stage audio circuit as in FiiO’s high-end devices, and features 2 AMK’s latest AK4493SEQ DACs and dual THX AAA 788+ amps;
- Supports multiple outputs- 4.4mm balanced out, 6.35/3.5mm single-ended out, as well as multiple inputs- USB, optical, coaxial and AUX in;
- Comes with versatile functions as well as robust output power- 1% THD+N under BAL output, 2000mW stable output power, which can drive most headphones, including full-size headphones;
- Supports input selections, 2 gain levels and 3 output levels, and features RGB indicator lights that can display the working state and differentiate sampling rates.
Rank No. #10
FiiO RR11 Portable HiFi FM Stereo Radio Receiver with Analog PVR Tuning, BASS+3D Sound Effects, 64MHz-108MHz (Silver, Hi-Res Audio Certified)
- With dimensions of just 83.2mm x 39.4mm x 13mm, the device is comparable in size to mainstream lighters. The body knob is crafted from aluminum alloy, featuring a meticulously designed wheel that simulates PVR tuning, seamlessly blending retro and modern aesthetics. This offers an immediate feedback experience that digital tuning devices simply cannot match.
- Equipped with the Silicon Labs professional FM radio chip Si4831, the device boasts enhanced radio station search capabilities, delivering clearer and more stable reception. It supports the 64-108MHz FM band, allowing you to tune into standard FM signals as well as campus FM broadcasts. Enjoy mainstream music stations, news programs, and unique campus radio content with ease.
- The RR11 not only supports using headphones as an antenna but also features a high-performance PCB signal gain antenna. This significantly enhances radio reception, ensuring you can effortlessly capture clear signals with a lightweight and portable design.
- The RR11 comes standard with custom retro-style earbuds and a digital-to-analog conversion cable. When paired with the conversion cable, the RR11 transforms into a compact headphone amplifier, boosting output power and utilizing the DDB analog sound effect chip to deliver unique audio enhancements. Whether you're listening to music or streaming online radio, the experience is enriched with distinctive charm.
- The RR11 is powered by a custom DDB analog sound effect and amplification chip, recreating classic audio effects and offering a 3D sound experience. This immerses you in a lifelike auditory environment, making every listening session truly captivating.
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