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.
All
Amp Box S3
reviews
Manufacturer details
- Power output: 2 x 23 W / 40 W at 8 ohms / 4 ohms
- Peak power: 2 x 50 W at 4 ohms
- Frequency response: 20Hz - 20kHz (- 0,7dB / 4 ohms)
- Channel separation: > -68 dB @ 20kHz
- Signal-to-noise ratio: 87dBV (100dBV-'A' weighted)/4ohms
- THD: < 0,02% @ 10W / 4 ohms
- Gain: 31 dB
- Input: 1 pair RCA sockets
- Input impedance: 25 kohm
- Speaker sockets: 4mm Ø Banana, spades, pins or bare wire
- Trigger: 12V DC In&Out, 2-pole jack socket Ø 2,5mm
- Power supply: 20V/3A DC (universal power supply)
- Dimensions (W x H x D): 103 x 36 x 118mm
- Weight: 385g without power supply
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
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.
Our take on the brand
Look inside the brand
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?
Used
Pro-Ject
What if you spend more?
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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
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
The MX-HPA’s technical performance is stunning. Typically, distortion from 20 Hz to 40 kHz is less than 0.005%. Signal-to-noise ratio is better than 120dB (‘A’ weighted). Frequency response is ruler flat from 10 Hz to 20 kHz (-0.1dB). The MX-HPA is capable of a short-term peak of 10 watts (for one cycle) and has two gain positions: 18dB (8X) and 24dB (15X). Inputs are either balanced or single-ended. The MX-HPA will automatically convert single-ended inputs to balanced. The MX-HPA is genuinely fully balanced from beginning to end.
Product Strengths
- Exceptional build quality with an elegant, minimalist aesthetic
- Fully balanced design
- Exceptional signal-to-noise ratio (>120dB 'A' weighted)
- Versatile because it automatically converts single-ended inputs to balanced signals
- Dual gain settings for versatility with virtually any headphone impedance
Product Considerations
- May be overkill for entry-level headphones
- The twin-XLR alternative is not the only means of balanced connection
Takeaway: The Musical Fidelity MX HPA is a remarkable piece of equipment that represents a significant achievement in balanced amplification design. It delivers a listening experience that is hard to surpass with technical excellence and practical versatility.
Video review
Our take on the brand
Our summary
Product Strengths
- Delivers a clean and detailed sound, allowing listeners to hear nuances in recordings
- Offers good instrument separation and imaging
- Has a low noise floor, creating a 'black background' and enhancing the listening experience
- Compact size for an A-B amplifier
- Does not have RCA inputs, requiring XLR or TRS balanced connections
Product Considerations
- May not have enough power for inefficient speakers or large rooms
- External power supply 'brick' is large
- No remote control
Comparisons (according to reviewers)
- The LA90 has a more neutral sound than Cambridge Audio AXA25, which is cleaner and more detailed
- The LA90 comes close to Benchmark AHB2's performance, but does not outperform it in bass impact and soundstage size, and the AHB2 also has more protection systems
- The LA90 offers more vocal clarity and fuller bottom end than Schiit Vidar, but the Vidar is more exciting on top
- Emotiva A1's have more power
Takeaway: The Topping LA-90 Discrete is a small amplifier that produces very clear sound with good detail, making it great for those who already have balanced audio equipment. It could be a nice upgrade for those seeking to hear all the subtleties in their music.
Video review
Our take on the brand
What competes at this price?
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
Our Summary
Product Strengths
- Impressive clarity, especially in the midrange, enhances detail in the music
- Bass performance is focused and precise, adding detail and punch to the lower frequencies
- A wide and expansive soundstage creates a sense of space and separation between instruments
- The amp is small and light, but is a fully linear class AB amplifier with a transformer inside
- It offers neutral presentation
- Requires a preamplifier with volume control, as it is a power amplifier without a volume knob itself
- Banana plugs are required for speaker connections, spades are not compatible
- In monoblock configuration, a preamplifier with balanced outputs is required
Product Considerations
- Requires a preamplifier with volume control, as it is a power amplifier without a volume knob itself
- Banana plugs are required for speaker connections, spades are not compatible
- In monoblock configuration, a preamplifier with balanced outputs is required
- 10 watts might not be enough for all listening setups and all environments
- It is important to pair this amp with speakers with high efficiency rating
Comparisons (according to reviewers)
- Versus the Cambridge Audio 651A—the Gjallarhorn had a wider and cleaner soundstage, provided a bigger bass performance, and separated the instruments in a more efficient manner, thus enhancing the clarity
- Versus the Rega Brio-R—the Gjallarhorn had a wider and cleaner soundstage, provided a bigger bass performance, and separated the instruments in a more efficient manner, thus enhancing the clarity
- Versus the Fosi Audio BT20A Pro—the Gjallarhorn had a bit more space and instrument separation
- Versus the Schiit Vidar—the Vidar has a lot more power, which is not the Gjallarhorn's intent
- Versus the Schiit Rekkr—the Gjallarhorn outperforms the Rekkr (2 watts), and is designed for more powerful home set ups rather than desktops
Takeaway: The Gjallarhorn is a versatile amplifier that excels in near-field setups and can be transformed into a powerful monoblock system, delivering clarity and balanced sound. It is a great choice for those seeking a compact yet capable amplifier for smaller spaces or desktop use, especially when paired with efficient speakers.
Video review
Our take on the brand
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
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Our Summary
Product Strengths
- Good sound quality, especially in the midrange, leads to vivid and well-formed vocals
- Versatile, it works well with both efficient headphones/IEMs and moderately powered speakers
- Compact design and good build quality, with the chassis acting as a heatsink
- Ability to roll op amps allows users to customize the sound signature
- Ample power for most headphones and nearfield speaker setups
- Only one RCA input, which may be limiting for some users
Product Considerations
- Speaker amplifier power (35-45W) might be insufficient for power-hungry speakers or larger rooms
- The base model op amps are sonically inferior to upgrade options
- Mild turn-off thump present
Comparisons (according to reviewers)
- The Funk has a narrower but deeper soundstage with better imaging and layering than the Arylic A08 Pro
- The Funk has superior imaging, but less potential power output depending on the Arylic's power supply than the Arylic A07/A08 Pro
- The Funk is preferred for desktop speaker setups with Vivid opamps when compared to Schiit Aegir
Takeaway: The Burson Funk is a solid choice for people wanting good sound from both their headphones and speakers in a single, convenient unit. The ability to change the sound by swapping op amps is a welcome feature for those who like to tinker and upgrade.
Video review
Our take on the brand
Our Summary
Product Strengths
- Great value for the money and an attractive price point
- Balanced input and single-ended RCA input
- Op amps are swappable
- Compact form factor
- Versatile with stereo and mono mode
Product Considerations
- The volume control was found to be touchy by some reviewers
- The included power brick is quite large, almost as big as the unit itself
- The binding posts are small
- The RCA input sounds inferior to the XLR input
- The amplifier does not high pass the mains when a subwoofer is plugged in
Comparisons (according to reviewers)
- Vs Fosi Audio V3: ZA3 is considered a more mature version with stylistic elements and new features like balanced inputs and mono mode, with a naturalness in the tonal quality
- Vs SMSL AO200 MKII: AO200 MKII delivers better clarity, definition, and resolution of the sound
Takeaway: The ZA3 is a versatile and compact amplifier that offers great value, especially for those starting their audio journey. Its ability to be used in both stereo and mono configurations and the option to upgrade components make it a flexible choice for various setups.
Video review
Our take on the brand
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