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
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
What are hifi reviews useful for? (1) Identifying products you should demo in person at a dealer. (2) Learning which products reviewers unanimously praise as the best they've heard (this means they probably are legitimately great). (3) Identifying a product's attributes that satisfy your idiosyncratic needs and tastes. Beyond that, we often discount what reviewers say because they heap praise on most products—and are often apprehensive about publishing strong criticism or comparisons between products. Further, they seldom have more than a few products on-hand, often relying on their memories to compare past products. Always listen for yourself.
All
Stereo Box S3 BT
reviews
Video Review
Manufacturer details
Features
Specifications
- Output power: 2 x 21W/40W at 8/4ohms (1%THD)
- Frequency response (20Hz-20kHz): <-1,5dB at 4ohms
- SNR: 96dB (100 dB - 'A' weighted) at 4ohm
- Channel separation: -67dB @ 10kHz
- THD: < 0,12% at 5W / 4 ohms
- Gain: 32,5dB
- Line level inputs: 2 pair RCA
- Input impedance: 25k ohms
- Variable line output: 3.5mm stereo jack
- BT version: 5.0
- Power supply: 20V/3A DC 100 - 240V, 50/60Hz
- Power consumption in standby: <0.5W
- Dimensions W x H x D: 103 x 37 x 115 (138) mm
- Weight: 450g without power supply
Description
Some setups make the use of big amplifiers impossible, but with the new Stereo Box S3 BT you have a big sound in an ultra compact casing. It features two line level RCA inputs and a AptX HD capable BT input to easily connect all your sources. The Stereo Box S3 BT features enough power to drive your favourite speakers with a fantastic sound quality. The 3.5mm jack variable output can be connected to an additional amplifier, active speakers or a subwoofer. With its tiny formfactor it fits into every environment. The full aluminium/metal casing not only looks gorgeous but also protects against vibrations and unwanted interferences. For superior convenience it is also fully remoteable. Simply switch inputs and control the volume with the ease of pushing one button!
Release Timeline
Manufacturer Site
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
- Pro-Ject offers a range of turntables and components that focus on simple setup and ease of use, often arriving pre-configured, making them particularly appealing to beginners.
- They prioritize sonic performance, often incorporating higher-end components like carbon fiber tonearms and Ortofon cartridges, even in their more affordable models.
- Pro-Ject is known for its all-in-one audio systems that combine a turntable, amplifier, and receiver into a single unit, aiming to provide component-like sound quality in a smaller, more convenient package.
Select products
Select product comparisons
A2
- Positioning: The entry-level, fully automatic turntable designed for ease of use and convenience.
- Description: Offers a fully automatic operation with a sub-chassis design that isolates the tonearm and platter from vibrations, making it ideal for small spaces where speakers are close to the turntable. Unlike the more manual and high-end models like the Signature series, focuses on user-friendly features and affordability, making it suitable for those with a limited budget who still want quality sound.
The Classic Reference
- Positioning: Positioned as a mid-range turntable, combines traditional design with modern technology.
- Description: Features a high-end EVO 9 AS HG tonearm and a precision motor control system, providing excellent sound quality with a touch of luxury. It offers more advanced features compared to the A2, such as a balanced XLR output.
RPM 10 Carbon
- Positioning: A high-end turntable known for its innovative design and superior sound quality.
- Description: With its carbon fiber chassis and 10" Evo tonearm, delivers exceptional sound clarity and stability. It stands out from the Classic Reference with its advanced materials and design.
Signature 10
- Positioning: A premium turntable that combines mass-loading with magnetically-floating principles for high-end audio performance.
- Description: Features a 10" single-pivot tonearm and a magnetically decoupled platter, providing a resonance-free listening experience. It offers more precise adjustments and a higher level of performance compared to the RPM 10 Carbon.
Signature 12.2
- Positioning: The flagship model, representing the pinnacle of Pro-Ject's turntable lineup.
- Description: Boasts a groundbreaking 12" 3-point pivot tonearm and a flywheel belt drive system, ensuring the most accurate and stable playback. It surpasses the Signature 10 with its larger tonearm and enhanced stability.
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Avg. Product Price
$500
Used For Sale
244
Available (Scroll Down)
Brand Popularity
15
of 900+
Badges
Top 50 Brand
Top 250 Brand
Products Listed
105
Founding Year
1991
Our take on the brand
Pro-Ject Audio Systems, an Austrian brand founded in 1991, has been at the forefront of reestablishing analog music reproduction to the public. The company handcrafts 95% of all components in the European Union. The turntables focus on manual operation and minimalist design with a wide selection of colors that make their turntables both audio devices and stylish furniture pieces. The brand stands out for offering one of the broadest ranges of high-fidelity products in the world, including turntables, CD players, DACs, streamers, phono preamps, amplifiers, and speakers. Pro-Ject products are engineered with a focus on best audio reproduction for the money and omission of costly, unnecessary features.
Look inside the brand
Brand Page
Our interview with the brand
What are two key technological innovations or strong opinions that differ you from other brands?
Pro-Ject Audio Systems was founded with a passion for analog audio reproduction. Our very first product, introduced in 1991, was a record player – a time when the entire industry was turning its back on vinyl. We didn’t jump on the bandwagon when vinyl became hip – we were instrumental in bringing vinyl back.
We manufacture – not only assemble – 95% of our products in the EU. Raw materials come in – finished products leave the factories. Since we make everything ourselves, we are able offer a 25 year spare part availability!
Today, we offer one of the broadest ranges of high-fidelity products in the world, including turntables, CD players, DACs, streamers, phono preamps, amplifiers, speakers, and a variety of accessories designed to enhance your system and vinyl care.
What's your approach to customer support?
Pro-Ject Audio Systems has a worldwide network of dealers and distributors. We ensure that our team members are highly knowledgeable in the field of high-fidelity audio setup and repairs. In the event of a need for support, the first point of contact is the local dealer. If the dealer cannot handle the problem, the second tier is the distributor in the respective country. By handling as many problems as possible locally, we can ensure the quickest and smoothest resolution.
What are your favorite tracks for showcasing the strength of your products?
Aside from one of the audio industry’s widest range of high-fidelity products, Pro-Ject also produces limited runs of high-quality vinyl records. 7Ray’s Jazzy Zoetrope is a double album of fine Jazz standards played by 7Ray and his quartet. One of the two records was recorded live at our headquarters in the Weinviertel region of Lower Austria. We produced the whole album in AAA for the highest analog purity. Here’s a link to the records we offer, which double as fine reference recordings across multiple musical genres.
What other products pair best with yours?
From our interview with
Shareef Karl Fahim
.
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Used
Pro-Ject
All of the Brand's Used Products
What if you spend more?
Pro-Ject
MaiA S3
799
799
/
6
Reviews
Pro-Ject Audio Systems, an Austrian brand founded in 1991, has been at the forefront of reestablishing analog music reproduction to the public. The company handcrafts 95% of all components in the European Union. The turntables focus on manual operation and minimalist design with a wide selection of colors that make their turntables both audio devices and stylish furniture pieces. The brand stands out for offering one of the broadest ranges of high-fidelity products in the world, including turntables, CD players, DACs, streamers, phono preamps, amplifiers, and speakers. Pro-Ject products are engineered with a focus on best audio reproduction for the money and omission of costly, unnecessary features.
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Our summary
Product Strengths
- Noted for its impossibly small and ultra-compact size, making it suitable for compact living spaces
- Offers a feature-rich design with an integrated phono stage, aptX HD Bluetooth connectivity, and additional RCA and TOSLINK digital inputs
- The unit runs cool due to its Class D amplifier design, making it energy-efficient
- Connectivity is praised, particularly the aptX HD Bluetooth, which delivers superior streaming quality
- Delivers a lively and engaging sound with excellent detail across phono and digital connections
Product Considerations
- The limited power output (23W at 8 ohms, 40W at 4 ohms) may be better suited to smaller listening spaces and efficient loudspeakers
- Some reviewers found the bass to be slightly lean, lacking heft or roundness
- The included remote control's button configuration for volume and input selection is unconventional
- The phono stage may benefit from an upgrade with an external phono amplifier for improved performance
- One reviewer found the line out voltage for the subwoofer is not strong enough to drive a powered sub
Comparisons (according to reviewers)
- Compared to the Pro-Ject Stereobox DS2, the MaiA S3 is more affordable and has digital inputs and superior Bluetooth connectivity
- Compared to the Rega Io, the MaiA S3 has strength in depth—specifically referring to the detail across the line, phono and digital connections
- The MaiA S3 is described as more resolving and ultra clean compared to the Rotel amplifier, with the Rotel offering a slightly more colored and warm sound
- Compared to the Technics amplifier, moving to the MaiA S3 results in a faster transit response, especially noticeable in classical music, while the Technics sounds slow in comparison
Takeaway: The Pro-Ject MaiA S3 is a compact and versatile integrated amplifier that delivers impressive sound quality and a range of connectivity options, making it an excellent choice for audiophiles with limited space. It is especially appealing to vinyl enthusiasts looking for a convenient and high-performing solution.
Video review
Our take on the brand
Pro-Ject Audio Systems, an Austrian brand founded in 1991, has been at the forefront of reestablishing analog music reproduction to the public. The company handcrafts 95% of all components in the European Union. The turntables focus on manual operation and minimalist design with a wide selection of colors that make their turntables both audio devices and stylish furniture pieces. The brand stands out for offering one of the broadest ranges of high-fidelity products in the world, including turntables, CD players, DACs, streamers, phono preamps, amplifiers, and speakers. Pro-Ject products are engineered with a focus on best audio reproduction for the money and omission of costly, unnecessary features.
Product Page
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Black Ice
FX10H
799
799
/
3
Reviews
The FX10H is an evolution of our amazing FX10. They both share the same sonic signature and are twins, but the FX10H incorporates the most requested features and revisions to reduce noise. The FX10H has a blacker background that gives it a more detailed holographic sound than its predecessor. New features include a 1/4in headphone out, RCA sub out, an all-new remote, and many more improvements.
Black Ice Audio is distinguished by its Odyssey Circuit, which allows preamp tubes to automatically balance when power tubes are biased, and its Exact Bias System with top panel terminals for easy adjustments. The brand uses custom-wound transformers with German grain-oriented silicon steel cores, and their F35 model is known for exceptionally quiet operation with rich midrange and tight bass that rivals solid-state amps.
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Product Strengths
- Offers a 'seductive, silky mid-range' where voices live
- The top end is extended but smooth, making it not a bright amp that would fatigue the ears
- The headphone amp is 'quite good' and comparable to higher-dollar headphone amps
- It has a dedicated subwoofer output on the back, making it easy to hook up a subwoofer
- Upgraded from the standard FX-10, it's been improved with better ventilation and tweaked circuit to create less heat, and it also comes with upgraded stock tubes
Product Considerations
- The FX-10H runs pretty warm, although improved ventilation helps
- It is 12 watts per channel
Takeaway: The FX-10H is a well-made, easy-to-use tube amplifier that delivers a beautiful, rich, and musical sound. It is a great choice for anyone wanting to experience the warmth and depth of tube amplification.
Video review
Our take on the brand
Black Ice Audio is distinguished by its Odyssey Circuit, which allows preamp tubes to automatically balance when power tubes are biased, and its Exact Bias System with top panel terminals for easy adjustments. The brand uses custom-wound transformers with German grain-oriented silicon steel cores, and their F35 model is known for exceptionally quiet operation with rich midrange and tight bass that rivals solid-state amps.
Product Page
Product Page
Expand Details
Our summary
Product Strengths
- Half-width size is desirable for storage, as two units can fit side-by-side on a typical hifi shelf
- Strong dynamic profile, dimensionality, and power for most performance speakers on the market
- Bass is much more controlled, and leading edges are significantly more defined, compared to the previous version
- Vocals feel lifelike and tangible
- Possesses a nice overall tone and a well executed lack of dryness or 'thin' character
Product Considerations
- A single Aegir 2 box delivers audiophile fun with efficient setups, but shines best in a dual mono two amp situation
- The top of the unit does heat up slightly with use
- May not be the perfect choice for high demand electrostatics
- Requires a balanced connection from the pre amp to bring out the best from the setup
- Takes a little longer to boot up compared to the original Aegir
Comparisons (according to reviewers)
- Vs Schiit Vidar: The Aegir 2 has a sound that is more rich and thick, but still defined
- Vs Aegir G1 (original): The Aegir 2 has increased dynamics and low end control compared to the original
Takeaway: The Schiit Audio Aegir 2 is a fun power amplifier that offers a strong dynamic profile and nice overall tone. It brings dimensionality and sufficient power for most performance speakers, making it an enjoyable addition to any audiophile setup.
Video review
Our take on the brand
Schiit Audio, an extremely popular direct-to-consumer hifi brand, specializes in entry-level DACs and amps for both headphones and speakers. Through their distinctive, authentic voice and low-price philosophy, they've built a very loyal customer base.
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What competes at this price?
Pro-Ject
Stereo Box E
314
/
Released
2024
The Stereo Box E is the all-in-one solution for your HiFi system. The circuitry is purpose-designed for correct and proper HiFi stereo enjoyment. Where other modern affordable amplifiers often prioritize features over quality, the Stereo Box E ensures there are no corners cut to maintain a level of audio quality that is usually seen in much more expensive amplifiers.
Pro-Ject Audio Systems, an Austrian brand founded in 1991, has been at the forefront of reestablishing analog music reproduction to the public. The company handcrafts 95% of all components in the European Union. The turntables focus on manual operation and minimalist design with a wide selection of colors that make their turntables both audio devices and stylish furniture pieces. The brand stands out for offering one of the broadest ranges of high-fidelity products in the world, including turntables, CD players, DACs, streamers, phono preamps, amplifiers, and speakers. Pro-Ject products are engineered with a focus on best audio reproduction for the money and omission of costly, unnecessary features.
Expand Details
Our Summary
Product Strengths
- Tonally sweet and detailed
- Able to engage with faster material
- Impressive phono stage with low noise and plenty of gain
- Extra functionality that works a charm
- 21-watt output is sufficient for any listening level
- Connectivity options
Product Considerations
- Dinky volume control is a little sensitive to over adjustment
- Input indicator is invisible at any distance
- Block type PSUs mean that they aren't quite as compact as expected
Comparisons (according to reviewers)
- The Node Nano is fractionally better doing its own decoding than the Stereo Box E, when the Node Nano is connected via the analogue out against the coax
Takeaway: The Stereo Box E is a sweet and detailed amplifier with impressive phono stage and sufficient output, which makes it a genuinely good piece of affordable two channel hifi. It provides new arrivals the starting point they need to build systems of their own
Video review
Our take on the brand
Pro-Ject Audio Systems, an Austrian brand founded in 1991, has been at the forefront of reestablishing analog music reproduction to the public. The company handcrafts 95% of all components in the European Union. The turntables focus on manual operation and minimalist design with a wide selection of colors that make their turntables both audio devices and stylish furniture pieces. The brand stands out for offering one of the broadest ranges of high-fidelity products in the world, including turntables, CD players, DACs, streamers, phono preamps, amplifiers, and speakers. Pro-Ject products are engineered with a focus on best audio reproduction for the money and omission of costly, unnecessary features.
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Rotel
A8
449
/
Released
2024
The A8 Integrated Amplifier is the perfect fusion of power, size, efficiency, and value tailored for music enthusiasts.
Rotel is a family-owned hifi brand that maintains control over its entire manufacturing process, including producing their own custom toroidal transformers for superior audio performance. Through their Balanced Design Concept and Michi high-end line, Rotel focuses on long-term product development cycles rather than frequent launches, emphasizing genuine performance improvements through careful component selection and circuit design.
Expand Details
Our Summary
Product Strengths
- Offers a full and robust sound
- Simple, stripped-down integrated amplifier that's easy to set up and use, with the essentials covered
- Solidly made, with good build quality and well-engineered controls
- The phono stage is surprisingly good, especially if paired with a modest turntable
- Features tone controls (bass and treble) adjustable by ±6 decibels, are a notable and highly recommended feature
Product Considerations
- Lacks digital inputs and Bluetooth connectivity which are common at its price point
- Has no outputs on the unit whatsoever, which makes integrating a subwoofer rather difficult
- The remote is a large plastic letdown
- At higher volumes, depending on the speakers used, the sound can become a bit aggressive
- The power output is modest
Comparisons (according to reviewers)
- Vs Marantz PM6007: Delivers a more authentic performance thanks to its pleasing resolution and greater insight into the subtleties
Takeaway: The Rotel A8 is a great starter amplifier that's easy to incorporate into any system and has surprisingly audiophile performance for the price. Its simplicity and sound quality make it ideal for those who appreciate straightforward design and solid performance.
Video review
Our take on the brand
Rotel is a family-owned hifi brand that maintains control over its entire manufacturing process, including producing their own custom toroidal transformers for superior audio performance. Through their Balanced Design Concept and Michi high-end line, Rotel focuses on long-term product development cycles rather than frequent launches, emphasizing genuine performance improvements through careful component selection and circuit design.
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Fosi
HT4S
145
/
Released
2024
All-in-One Fosi Audio HT4S Multi-Channel Integrated Power Amplifier Easily handle various audio inputs and outputs, providing up to 5 channels of output for seamless integration and flexible configurations to meet diverse audio needs.
Fosi Audio makes quality hifi accessible worldwide by offering a diverse range of amplifiers, preamps, and DACs that blend modern engineering with vintage-inspired design. Their products are engineered for versatility and power, serving both audiophiles and gamers with impressive performance at competitive prices. With a strong reputation built on solid reviews and customer focus, Fosi Audio stands out as a go-to brand for enthusiasts seeking exceptional sound without breaking the bank.
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Our Summary
Product Strengths
- Good build quality with an all-metal casing that feels solid
- Simple manual containing all necessary information
- Versatile, with options to connect via Bluetooth, optical input, or mini jack
- Can be used as a receiver for passive or active speakers
- Has banana plug options for speaker cables
Product Considerations
- The reviewer had issues separating channels, and could only get two channels to work properly
- Remote control is made of plastic and not particularly special
- Cable management can be an issue
Takeaway: The HT4S is a versatile and well-built receiver with multiple connectivity options that can be used for a variety of purposes including sim racing. The unit is powerful and delivers a punch.
Video review
Our take on the brand
Fosi Audio makes quality hifi accessible worldwide by offering a diverse range of amplifiers, preamps, and DACs that blend modern engineering with vintage-inspired design. Their products are engineered for versatility and power, serving both audiophiles and gamers with impressive performance at competitive prices. With a strong reputation built on solid reviews and customer focus, Fosi Audio stands out as a go-to brand for enthusiasts seeking exceptional sound without breaking the bank.
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iFi
GO blu
199
/
Released
2021
With Hi-Fi inspired architecture featuring dedicated Bluetooth, DAC, and Amp stages, the ultra-portable GO blu offers the best of both worlds – wireless freedom, paired with the clarity of wired sound.
iFi Audio specializes in portable hifi audio players, offering compact DACs and headphone amplifiers for audiophiles seeking quality sound on the go. The brand also provides affordable audiophile gear, making quality hifi audio accessible to more people.
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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
iFi Audio specializes in portable hifi audio players, offering compact DACs and headphone amplifiers for audiophiles seeking quality sound on the go. The brand also provides affordable audiophile gear, making quality hifi audio accessible to more people.
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SMSL
AO200 MK II
341
/
Released
2024
AO200 MKⅡ Stereo amplifier features a new digital high-power amplifier chip MA5332 from Infineon, Germany, offering higher quality with high efficiency and low power consumption. It uses NJRC's electronic volume control chip NJW1194 from Japan for precise volume control and low distortion.
SMSL, a Shenzhen-based hifi brand, stands out for its use of advanced chipsets like Infineon's MERUS and ES9039Q2M, which have been objectively verified to deliver exceptionally low noise and distortion levels. The brand has earned acclaim from value-conscious audiophiles.
Expand Details
Our Summary
Product Strengths
- Delivers a neutral and transparent sound signature, providing an accurate representation of the source material
- Offers plenty of power for its size, capable of driving even demanding bookshelf speakers without losing composure
- Features built-in EQ presets and bass/treble tone controls for customizing the sound
- Built with high-quality materials, featuring an aluminum alloy chassis that is both durable and lightweight
- Has versatile connectivity options, including balanced XLR inputs, RCA inputs, USB input, and Bluetooth
Product Considerations
- Internal DAC and Bluetooth performance are underwhelming compared to the amplifier section
- The stock SBC Bluetooth codec limits wireless audio streaming quality
- EQ settings can be confusing and require some experimentation to dial in a balanced sound
- The volume knob might be slightly wobbly
- The power cord could be too short for some setups and might need to be replaced
Comparisons (according to reviewers)
- The MKII offers nearly double the power output and sounds more dynamic than the SMSL AO200 (original)
- Compared to the Yamaha A-670, the AO200 MKII offers more detail and soundstage, though the Yamaha is warmer and more forgiving
- The AO200 MKII has higher driving power, a more dynamic sound, and lower distortion than the Arylic A50+
- The AO200 MKII offers a more palpable and lifelike sound than the Topping PA5
- The AO200 MKII has better driving power at times, better EQ with no degradation, and is a better value than the Burson Funk
Takeaway: The SMSL AO200 MKII is a compact and powerful stereo amplifier with a neutral sound, making it a solid option for those who want clean sound, plenty of connectivity options, and customization features. It is a good value that can improve the sound of many speaker setups.
Video review
Our take on the brand
SMSL, a Shenzhen-based hifi brand, stands out for its use of advanced chipsets like Infineon's MERUS and ES9039Q2M, which have been objectively verified to deliver exceptionally low noise and distortion levels. The brand has earned acclaim from value-conscious audiophiles.
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