Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.
Product Strengths
- Powerful amplifier, described as 'sensible' and capable
- Smooth and detailed sound quality, with a refined and immersive experience
- Good build quality, feels solid and well-constructed
- Versatile, suitable for different headphones, including those with balanced cables
- Adds an enormous amount of depth to audio, making it speaker-like
Product Considerations
- Volume attenuator knob may have alignment and usability issues
- Crossfeed between the input and output ports could present problems
- Electronic manual is inconveniently located on a USB drive
- +20dB Gain—the 'over-the-top' Class A experience flavor has recessed treble
- At +20dB gain, the sound might seem "muddy"
Takeaway: The Aune X7s is a powerful headphone amplifier which does one thing really well, making it worth consideration. Its ability to produce a refined and detailed sound makes it a worthwhile addition to any audiophile's setup.
Compared to their other products
We think it's helpful to understand how this product fits into the brand's full lineup (below). To learn more about these products, visit the brand's page.
BU1-Portable-DAC-with-Headphone-Amplifier
- Positioning: Entry-level design focused on portability and affordability.
- Description: Offers a compact DAC and headphone amplifier suited for on-the-go audio setups and small room use, with a straightforward design that meets basic connectivity needs. Compared to other models, it has fewer advanced controls and processing options, making it ideal for users with a limited budget and simple functionality requirements.
Yuki-USB-DAC-with-Headphone-Amp
- Positioning: Budget-friendly desktop solution designed for streamlined USB audio performance.
- Description: Features a clear USB input interface and precise DAC circuitry that provide improved sound clarity for desktop listening. Compared to the portable BU1 and more feature-rich models, it addresses basic needs at a modest cost while offering reliable performance for everyday use.
X1s-GT-X1s-GT-BT-DAC-with-Headphone-Amp
- Positioning: Mid-range option offering a blend of wired and wireless connectivity for versatile setups.
- Description: Integrates both Bluetooth and digital inputs in a robust DAC/amp package that supports varied audio sources, making it adaptable for home or portable applications. Compared to the entry-level designs, it provides better build quality and added connectivity without reaching premium price levels.
X8-XVIII-X8-XVIII-BT-Magic-DAC
- Positioning: Advanced model featuring a unique Bluetooth transmission system for enhanced digital audio.
- Description: Introduces a proprietary BT Magic feature that improves wireless connectivity and digital conversion quality, making it a notable upgrade in performance for modern audio setups. Compared to lower-priced models, it delivers superior digital-to-analog conversion and connectivity features while still being positioned below the top-tier S9c Pro.
S9c-Pro-DAC-with-Headphone-Amp-with-AL3-XLR-Balanced-Male-to-Female-3-Pin-Audio-Cable-1-Pair
- Positioning: Premium high-end solution optimized for balanced outputs and precise audio reproduction.
- Description: Uses advanced DAC circuits and balanced amplifier outputs that provide superior audio detail and technical refinement. Compared to every other model in the lineup, it offers more versatile connectivity options and a higher standard of build quality.
Read the reviews
X7s
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Manufacturer's notes
- Weight: 2 kg (4.4092 lb = 70.5479 oz)
Our take on the brand
What if you spend a bit more?
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Our Summary
Product Strengths
- Fully balanced technology, with balanced inputs and outputs.
- Delivers powerful amplification, with up to 7.5 watts of power, capable of driving a wide range of headphones, including hard-to-drive models.
- Features a linear power supply with a large transformer and capacitor bank, providing a stable and powerful power source.
- Provides two current modes (50mA and 100mA) to tailor the sound tonality, allowing users to choose between a more forward/analytical sound and a warmer/fuller sound.
- Employs an R2R network for volume control, ensuring channel balance even at low volumes.
Product Considerations
- Runs quite hot due to its Class A amplification, requiring adequate ventilation, with chassis temperatures potentially reaching up to 50 degrees Celsius, and the unit may switch from 100mA to 50mA mode if it overheats.
- High power output might not be ideal for very sensitive IEMs, potentially limiting volume control flexibility.
- The preamplifier output is always active, meaning it doesn't mute when headphones are plugged in, requiring caution to prevent damage.
- The LCD display cannot be dimmed or switched off, and the red color of the 100mA mode may appear washed out.
- Some report volume slots are not regular or have large jumps, and/or that the remote control can be buggy.
Comparisons (according to reviewers)
- Vs. Topping A90 Discrete: The S17 has a richer sound, wider soundstage, and easier dynamics, especially in 100mA mode, placing it in a higher tier.
- Vs. Topping A90D: The S17 Pro is capable of even stronger dynamic swings, with a slightly cleaner and less cluttered soundstage.
- Vs. Violectric V222: The Aune S17 Pro is more 'tubey' and warmer sounding than the V222.
- Vs. HIFIMAN EF600: The Aune S17 has better volume control, higher dynamic range, better driving power, and better resolution.
Takeaway: The Aune S17 Pro is a powerful and versatile headphone amplifier that delivers rich, detailed sound, allowing listeners to experience music in new ways. With its balanced design and flexible current modes, it can enhance a wide range of headphones and audio setups.
Video review
Our take on the brand
Our Summary
Product Strengths
- Improved battery management offering faster charging rates and better efficiency than its predecessor
- Features a new USB-C data input for greater flexibility alongside other inputs
- Offers the world's first lossless DSP for tone adjustments without degrading sound quality, providing customization options
- Excellent resolution and dynamics with a large soundstage and extreme detail
Product Considerations
- The Mojo 2 can get warm when in a pocket for a period of time
- Complicated menu navigation with color-coded buttons that may require the manual
- Still uses Micro-USB for charging, which some find outdated
Takeaway: The Chord Mojo 2 is an exceptional DAC/headphone amplifier for those seeking high-resolution audio and customized sound in a portable format that is easy to move. Its sonic accuracy, detailed soundstage, and improved features provide a versatile and enjoyable listening experience, making it a worthwhile consideration for audio enthusiasts.
Video review
Our take on the brand
Our Summary
Product Strengths
- Versatile connectivity with both wireless (Bluetooth 5.1 with various codecs) and wired options (USB, S/PDIF, analog inputs) makes it suitable for various setups—from desktop to portable usage
- Eloquent, informative, and entertaining sound quality, able to produce clear, non-artificial sound across different headphones
- Features such as XBass II and XSpace provide additional sound shaping options for the user to customize the sound to their liking
- The aluminum build provides a robust and premium feel, with a design that's described as sleek and comfortable to handle
Product Considerations
- The user interface is not very intuitive
- Decent headphones are needed to reveal its quality
- The OLED screen can be difficult to read
- Battery life is around six to eight hours
Comparisons (according to reviewers)
- Compared to the hip-dac2, the Gryphon offers better sound quality, more features, and flexibility
- Compared to the iFi GO bar, the Gryphon is bigger and has a built-in battery, and the GO bar is much smaller and draws power from the source device
- Compared to the iDSD Diablo, the Diablo has more power for very demanding headphones, Gryphon has more functions
- Compared to the Zen DAC, the xDSD Gryphon has a more sophisticated and detailed sound
Takeaway: The iFi xDSD Gryphon is a portable and versatile device delivering high-quality sound with extensive features that cater to audiophiles. Its ability to improve sound quality from various sources and its robust build make it a worthwhile investment for music lovers on the go.
Video review
Our take on the brand
Unleash the Power of Composite Amplifier Topology
The CH-Amp incorporates a Composite Amplifier Topology, combining the best of both worlds with excellent DC and AC characteristics. Unlike traditional power amplifiers that can experience errors and performance degradation when driving heavy loads, the composite op-amp eliminates these issues, ensuring optimal circuit performance. Benefit from improved DC output-offset and enhanced overall circuitry performance with the CH-Amp.
Unparalleled Design and Construction
EarMen CH-Amp is meticulously crafted with high-quality components, including WIMA capacitors, audio electrolytes, MELF low noise resistors, and SoundPlus OPA1642 operational amplifiers. This carefully chosen combination results in a neutral sound signature and exceptional characteristics, including low signal-to-noise ratio, ultra-low Total Harmonic Distortion (THD), and excellent frequency response. Experience pristine audio reproduction and plenty of power, even under high loads.
Flexible Connectivity and Control
CH-Amp offers two key features: preamp outs and a gain switch. Take advantage of the balanced and single-ended preamp outputs, allowing you to connect powered monitors for a complete audio system. The gain switch provides precise control over output level and impedance, ensuring optimal matching with your headphones. Tailor your audio experience to perfection with EarMen CH-Amp.
Exceptional Craftsmanship
CH-Amp features a full block aluminum chassis, guaranteeing durability and robustness. Its compact design allows seamless integration into any environment or home audio system. The PCB is securely embedded within the solid aluminum housing, providing enhanced protection and insulation against external influences. Enjoy a reliable and long-lasting audio companion with EarMen CH-Amp.
Fully Balanced Architecture for Pure Sound
EarMen CH-Amp embraces a fully balanced architecture, preserving the integrity of the audio signal from the source to the output. The balanced outputs remain intact and are only amplified, ensuring pristine sound reproduction. The single-ended inputs are expertly converted to balanced signals without phase shift or imbalance, guaranteeing optimal phase alignment. Say goodbye to unwanted artifacts and immerse yourself in pure audio bliss.
Extra Low Linear Power Supply
With the CH-Amp, you also receive an extra low noise linear power supply designed without compromise, using top-of-the-line components and the latest circuit design techniques. EarMen's linear power supply is both reliable and simplistic, producing minimal noise for an undistorted audio experience. It is custom-made for our devices to deliver exceptional efficiency and exceed your expectations. Furthermore, it includes protection against current overload, short circuit, and thermal overload, adhering to the highest safety standards.
Release the Full Potential: Create Your All-in-One System
The EarMen Linear power supply can be seamlessly connected to the EarMen Tradutto DAC and EarMen Staccato Streamer, transforming your setup into a powerful all-in-one audio system. Enjoy the convenience and flexibility of a unified audio solution without compromising on performance.
Our Summary
Product Strengths
- Very clean, smooth, and enjoyable sound without harsh edges or digitization
- Plenty of power for a wide range of headphones and IEMs due to its 3.8 watts into a 32 ohm load
- Comes with a linear power supply that provides clean power and minimizes noise
- Includes a remote control that can also control the matching DAC
- Offers versatile connectivity with balanced and single-ended pre-outputs, as well as multiple line inputs
Product Considerations
- 4.4mm connections are used for balanced input/output, which may require purchasing new cables if existing XLR cables are already owned
- The VU meter on the front of the device may not be very useful for normal listening levels
- Settings are not held when the amplifier is turned off
- There is noise in headphones when the unit is turned off or on from standby mode
Comparisons (according to reviewers)
- Vs Burson Audio Soloist 3XP: Champ provides more body and weight to the sound, while the Soloist 3XP offers greater space and separation
Takeaway: The CH-Amp is a compact and versatile amplifier that delivers a clean and enjoyable sound, making it a great choice for those looking for a high-quality listening experience. Its ability to pair well with a variety of headphones and IEMs makes it a worthwhile addition to any setup.
Video review
Our take on the brand
What else competes at this price?
Our Summary
Product Strengths
- Detailed and expansive presentation, offering a sonic upgrade to phones, especially when portability is a priority
- Versatile, with both wired and wireless connectivity options, including balanced and unbalanced headphone outputs
- Impressively small size and lightweight design, making it pocket-friendly and convenient for on-the-go use
- Sound quality is generally linear, with fast and accurate bass, flat and clean mids, and a detailed treble that is not harsh
- XBass and XSpace features offer customized listening experiences
- Build quality and aesthetics are generally well-received, with its design standing out from other devices
- ChronoDial volume knob is particularly praised for its tactile feel and functionality
Product Considerations
- Black rubberized plastic casing can feel a bit flimsy to some users
- Some reviewers noted hiss with sensitive IEMs, especially on the balanced output
- Battery life estimation can be unreliable
- No dedicated app for the device, limiting EQ and DSP options
- Lacks a clip, making it less convenient for truly portable use
Comparisons (according to reviewers)
- Compared to the Audiolab M-DAC Nano, the Go Blu offers a wider soundstage, better separation, and dynamic sensitivity, though the M-DAC Nano is fractionally punchier in the bass
- Compared to the AudioQuest DragonFly Cobalt, the Go Blu is a wireless proposition, unlike the DragonFly Cobalt, which is a USB plug-in DAC
- Compared to the FiiO Q3, the iFi GO blu highs are a bit too brilliant, but everything else sounded quite impressive
- Compared to the NuPrime Hi-mDAC, the iFi GO Blu mids sound a lot like it, even if voices are slightly less natural
- Compared to the Hidizs S9 Pro and Aune BU2, the GO Blu provides a relaxed sound and has better build and functionality compared to the Hidizs S9 Pro, but is better when using bluetooth compared to Aune BU2, however when competing on wired terms, the Aune is clearer
Takeaway: The iFi GO blu is a tiny but mighty device that delivers impressive sound and versatility—improving the wireless music experience. It is easy to use and has some cool features, making it a good pick for anyone looking for a portable upgrade for their headphones.
Video review
Our take on the brand
Our Summary
Product Strengths
- Good build quality for the price, with an all-metal chassis and tight inputs
- Versatile, with multiple connection options: USB Type-C, optical, coaxial, and RCA outputs
- Offers bass and treble controls to adjust the sound to the listener's liking
- Decent power output for most headphones, especially within the 32-250 Ohm range
- Great value for the price, especially considering its features and versatility
Product Considerations
- Some reviewers experienced technical issues with initial units, raising concerns about reliability
- May not provide enough headroom for all headphones, even with efficient ones
- Bass adjustment can muddy the sound if turned up too much
- The internal DAC is considered mediocre by some, not very resolving
- There can be a slight noise floor audible with sensitive IEMs
Takeaway: The FIIO K5 is a versatile and affordable device that enhances the audio experience with different headphones and devices. It has multiple inputs and EQ controls, which are beneficial for gamers and music lovers.
Video review
Our take on the brand
Our Summary
Product Strengths
- Versatile as both a headphone amplifier and preamplifier
- Features bass, mid, and treble tone controls for customized sound
- Offers a loudness button to enhance bass and treble at low volumes
- Has a built-in battery for transportable use
- Powerful output to drive various headphones
Product Considerations
- Not ideal for highly sensitive IEMs due to potential hissing at higher volumes
- Size and weight may limit practical portability
- No DAC, relies on external DAC
- Tone controls reduce power output
- The potentiometer is a little bit on the cheaper side, there is a slight bit of channel imbalance when at very low volume
Takeaway: The Fosi Audio SK01 is a versatile and powerful headphone amplifier with tone controls, making it easy to customize audio and drive various headphones, and its battery and preamp functionality are perfect for those seeking a transportable and flexible audio solution
Video review
Our take on the brand
Our Summary
Product Strengths
- Phenomenal sound quality.
- Very usable and enjoyable interaction due to a physical volume knob.
- Plenty of power for almost everything and can drive just about anything.
- Versatile; it can be used as a desktop all-in-one, a Bluetooth portable DAC/amp, a portable amplifier, and even a DAC for speakers.
Product Considerations
- Susceptible to EMI noises, which can be a deal breaker; static noises, pops, and crackle sounds can occur when a phone is placed directly on top of it.
- Not a completely balanced architecture; the 3.5mm & 4.4mm headphone outputs sound the same.
- Charging port may not indicate charging on anything higher than an 18W charging block, and some chargers may not work.
Comparisons (according to reviewers)
- Vs FIIO BTR-7: Sounds more refined and has more detail and resolution.
- Vs SMSL C200: The C200 sounds significantly warmer with a fuller, juicier bass line and a little bit more airy, while the G5 is more focused on clean and clear edges, tidy, well-focused—and clean.
- Vs SMSL M500 MK2: The M500 MK2 sounds overall better with dynamics at the same level as the G5 and fuller, warmer tonality—and a bigger, more spacious soundstage.
- Vs Moondrop Moonriver 2: The treble is more refined, better details up top, and a sharp edge without being overboard like the Moonriver 2 can.
Takeaway: The G5 is a well-built and versatile portable DAC/amp with a neutral, clean, and dynamic sound. It is great for those looking for an all-in-one solution that can drive almost any headphone or IEM.
Video review
Our take on the brand
Our Summary
Product Strengths
- The DO400 is a versatile device, serving as a DAC, preamp, headphone amplifier, and Bluetooth receiver
- It offers a highly resolving and transparent sound, with a measured dynamic range of 133dB on its XLR output and 126dB on its headphone output
- It has very tight control over the drivers, sounds quite dynamic and clean, and delivers a punchy sound
- The DO400 features extensive I/O with HDMI, USB, XLR 4-Pins, and Pentaconn 4-Pins
Product Considerations
- It does not have analog inputs, which limits the sources one can pair it with
- The DO400's case cover is steel, and the rotary knob wobbles
- Some may find its sound signature a bit too linear for some genres
- The remote control is plastic-y
- The speedy nature of the ESC by Silicon might result in a less impressive initial kick in the eardrums via headphones, compared to the XLR and RCA outputs
Comparisons (according to reviewers)
- Compared to the Topping DX7 Pro Plus, the DO400 is more organic and dynamic sounding
- Compared to the Topping DX5, the DO400 offers noticeably better line output
- Compared to the Chord Mojo 2, the Chord Mojo 2 sounds better when used as a DAC, offering better detail retrieval and a richer tone timbre, but the DO400 has more power
- Compared to the SMSL SU-9, the DO400 sounds slightly brighter and less-smoothed over—there's an analytical quality to the treble end
Takeaway: The SMSL DO400 is a great-sounding all-in-one unit that offers a lot of features for the price. Its noiseless performance with IEMs and ability to drive most headphones make it a worthwhile purchase.
Video review
Our take on the brand
Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.
Product Strengths
- Powerful amplifier, described as 'sensible' and capable
- Smooth and detailed sound quality, with a refined and immersive experience
- Good build quality, feels solid and well-constructed
- Versatile, suitable for different headphones, including those with balanced cables
- Adds an enormous amount of depth to audio, making it speaker-like
Product Considerations
- Volume attenuator knob may have alignment and usability issues
- Crossfeed between the input and output ports could present problems
- Electronic manual is inconveniently located on a USB drive
- +20dB Gain—the 'over-the-top' Class A experience flavor has recessed treble
- At +20dB gain, the sound might seem "muddy"
Takeaway: The Aune X7s is a powerful headphone amplifier which does one thing really well, making it worth consideration. Its ability to produce a refined and detailed sound makes it a worthwhile addition to any audiophile's setup.
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