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.
Product Strengths
- High-efficiency digital power amplifier, designed to deliver low distortion, low noise, and a wide dynamic range
- Equipped with audiophile-grade components and a built-in power supply, offering both impressive performance and convenience
- An NJU7391A electronic volume control chip is used for surround sound and tone control, providing a refined listening experience
- Clean sound, with no hints of hiss nor interference, and pristine performance whether set in low or high gain
- Does not sound oversharpened, edgy, or unnatural in any way
Product Considerations
- The display screen has a cumbersome and unintuitive user interface that uses "coded" references to each option, menu, and setting with single or double letters and a number
- Input options may seem poor because it only has one RCA
- The ground is floating or not connected to the chassis
Comparisons (according to reviewers)
- Compared to Fosi Audio V3 and Arylic B07, the PA40 provides a more complete package compared to the V3, and a lower price point compared to the B07
Takeaway: The SMSL PA40 is a good option to start building a hifi system while on a budget, especially if you already have a DAC. It offers a clean and neutral sound that is pleasant to listen to.
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
PA40
reviews
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An excellent review of a great product
/
Publisher
/
3/1/2022
An excellent review of a great product
Publisher
/
3/1/2022
Video Review
Manufacturer details
Features
Specifications
- Amplifier Chip: MA5332 (Infineon)
- Volume Control Chip: NJU7391A (JRC)
- Features: High/Low gain options, Preset EQ, Treble/Bass adjustment
- Protection: Overheating, Overcurrent
- Color: Black
Description
PA40 Class D Power Amplifier features a new digital high power amplifier chip MA5332 from Infineon, Germany, offering higher quality with high efficiency and low power consumption.
New digital high power amplifier chip MA5332 from Infineon, Germany, higher quality with high efficiency and low power consumption; Using JRC’s electronic volume control chip NJU7391A from Japan, precise volume control and ultra-low distortion; High gain and low gain options for better matching audio sources with different output levels; Built in preset EQ and treble/bass adjustment function, easily matching various speakers and music; A large number of audiophile-grade audio components are used to enhance the listening experience; High quality gold-plated input and output terminals; Well-developed protection circuits for overheating,overcurrent,etc. Built in high quality and high power audio dedicated power supply.
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:
- SMSL amplifiers, particularly the AO series, offer a versatile feature set, including USB DAC functionality, Bluetooth connectivity, and subwoofer outputs, making them suitable for diverse audio setups, often at an affordable price.
- They incorporate quality components, such as Infineon Class D amplifier chips, NJRC potentiometers, and TI op-amps, reflecting a deliberate choice to balance performance and cost.
- SMSL DACs often provide a neutral and transparent sound signature, aiming for accurate audio reproduction with excellent detail retrieval.
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Avg. Product Price
$500
Used For Sale
24
Available (Scroll Down)
Brand Popularity
12
of 900+
Badges
Top 50 Brand
Top 250 Brand
Products Listed
94
Founding Year
2009
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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What's your approach to customer support?
What are your favorite tracks for showcasing the strength of your products?
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From our interview with
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What if you spend more?
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SMSL
VMV P2
999
999
/
2
Reviews
Fully balanced design, 4 ultra-low distortion precision linear feedback circuit (PLFC)! The distortion is as low as 0.00006%, and the SNR is as low as 133dB! A total of 99 low-noise op-amps are used in a parallel design. High output power, 16 ohm output power up to 12W, 32 ohms up to 6W; The specially designed volume potentiometer greatly reduces channel deviation; 3 gears gain control, low gain is specially optimized for IEM; Pre-out function, can be used as Hi-End pre-amp; Classic retro toggle switch operation; Ultra-compact design, very suitable for desktop headphone system; High-precision low-temperature drift resistance, performance is not affected by temperature; High-quality relay and non-impact sound design; 20Hz to 100KHz(-0.5dB) frequency response; The headphone amplifier has comprehensive protections such as DC, overvoltage, and overload protection; Built-in high-efficiency and low-noise power system.
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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Product Strengths
- Original and stylish design
- High power output, up to 12 watts
- Overload protection
- The XLR, RCA input switch, the headphone amplifier or preamplifier switch, and the low, mid, and high gain switches are located on the back of the unit, potentially making them difficult to access
Product Considerations
- The unit uses 99 low-noise op-amps in parallel, which is considered excessive and potentially detrimental to sound quality
- The unit uses the cheapest balanced potentiometer
- The unit uses a couple of switching power supplies
- The total harmonic distortion is only at its super magical level with a very high wattage
Takeaway: The VMV amp has high power and overload protection that might work to drive headphones. It could be a great amp for someone willing to try it out.
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.
Product Page
Product Page
Topping
LA90
799
799
/
10
Reviews
Topping Audio is a measurement-focused hifi brand that developed its own proprietary PSRM DAC architecture and NFCA amplifier topology to achieve exceptionally low distortion levels. Their products, from the flagship D90 III Discrete DAC to entry-level interfaces like the E2x2, use advanced technologies like custom I/V conversion stages and high-feedback Class B designs to deliver clean, accurate sound reproduction.
Expand Details
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
Topping Audio is a measurement-focused hifi brand that developed its own proprietary PSRM DAC architecture and NFCA amplifier topology to achieve exceptionally low distortion levels. Their products, from the flagship D90 III Discrete DAC to entry-level interfaces like the E2x2, use advanced technologies like custom I/V conversion stages and high-feedback Class B designs to deliver clean, accurate sound reproduction.
Product Page
Product Page
Topping
LA90 (Discrete)
799
799
/
9
Reviews
Topping Audio is a measurement-focused hifi brand that developed its own proprietary PSRM DAC architecture and NFCA amplifier topology to achieve exceptionally low distortion levels. Their products, from the flagship D90 III Discrete DAC to entry-level interfaces like the E2x2, use advanced technologies like custom I/V conversion stages and high-feedback Class B designs to deliver clean, accurate sound reproduction.
Expand Details
Product Strengths
- Impressive specs and measurements showcase extremely low noise and distortion
- Clean and transparent sound aims for a neutral reproduction of music
- Compact size and sleek design make it suitable for small spaces
- CNC machined aluminum chassis allows for maximum thermal flow to keep the unit running cool
Product Considerations
- Included external power supply is large and heavy, which can be a challenge to hide
- Power output may be limiting, especially with demanding speakers and for high dynamic range tracks
- Bass performance, while tight and controlled, may lack sub-bass extension and impact for some listeners
- Lack of a remote control limits its convenience as an integrated amplifier
Comparisons (according to reviewers)
- The Discrete version matches the Topping LA90 IC based unit's exemplary performance, but betters it in power handling
- The Topping LA90 comes close to the Benchmark AHB2 in noise floor and detail retrieval, but the AHB2 has more power, impactful bass, and a bigger soundstage
Takeaway: The Topping LA90 is a compact and technically proficient amplifier that delivers a clean and transparent sound and with impressive specs. It is best suited for those with efficient speakers and a preference for accurate sound reproduction without coloration.
Video review
Our take on the brand
Topping Audio is a measurement-focused hifi brand that developed its own proprietary PSRM DAC architecture and NFCA amplifier topology to achieve exceptionally low distortion levels. Their products, from the flagship D90 III Discrete DAC to entry-level interfaces like the E2x2, use advanced technologies like custom I/V conversion stages and high-feedback Class B designs to deliver clean, accurate sound reproduction.
Product Page
Product Page
Expand Details
Our summary
Product Strengths
- Bass performance is taut, detailed, and well-dampened
- Delivers a neutral presentation overall
- Has a solid steel chassis and milled aluminum faceplate
- The A1 is able to drive low impedance speakers with power and grandeur
- Produces 200 watts into 8 ohms and 325-350 watts into 4 ohms
- Only has a single line-level RCA-style input
Product Considerations
- Audible tweeter hiss may be present at idle, especially with highly efficient speakers
- High frequencies are not as smooth at the edges, exhibiting just faint traces of grain when listening at above-average levels
Comparisons (according to reviewers)
- Vs Rotel 1592 MkII amp: A1 is notably quieter and more detailed
- Vs Crown XLS Drive Core 2 amps: A1 is equally neutral in tone, has a lower noise floor, and a more consumer-friendly design
- Vs Schiit Vidar: A1 has a larger soundstage
Takeaway: The BasX A1 monoblock amplifier delivers good power and a neutral sound signature. It is a great option for those looking to expand an existing AVR or build a cost-effective hi-fi system.
Video review
Our take on the brand
Emotiva is a direct-to-consumer hifi brand that enables audiophiles to customize their amplifier configurations through a modular "Build Your Own" approach, using their Differential Reference design to minimize noise and distortion.
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Product Page
What competes at this price?
Expand Details
Our Summary
Product Strengths
- Excellent build quality, featuring a CNC milled aluminum chassis and durable construction
- Achromatic Audio Amplifier (AAA) technology by THX, aiming for transparent sound reproduction without coloration
- Relay volume control provides precise channel matching
- Plenty of power to drive a wide range of headphones, from sensitive IEMs to demanding planars
- Balanced XLR inputs and outputs
Product Considerations
- No pre-amp output
- The notched volume control might not be to everyone's liking
- Gets quite warm during use, especially with the SU-9 DAC stacked on top
- Some reviewers noticed a clicking noise when adjusting the volume
- The three-feet design may not be as stable as a four-feet design
Comparisons (according to reviewers)
- Vs. SMSL SP200: Better unit at repelling noise, with a higher signal-to-noise ratio and lower total harmonic distortion—completely solved the SP200's issue with not having a pitch-black background
- Vs. Benchmark HPA4: Very close to the HPA4 in performance, with some minor differences observed only with high-end headphones
Takeaway: The SMSL SH-9 is a well-built and powerful headphone amplifier with a clean, transparent sound. It is a good choice for audiophiles looking for an accurate and detailed listening experience.
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.
Product Page
Product Page
SMSL
HO100
217
/
Released
2022
HO100 Headphone Amplifier features an ultra-low distortion precision feedback circuit with distortion as low as 0.00006%, and an ultra-low noise power supply design that outputs noise as low as 1.3uV.
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
- Budget-friendly headphone amplifier focused on quality
- Robust all-aluminum exterior, with rigid toggle switches, and smooth volume control, giving it the same fit and finish as SMSL's higher-end HO200
- Delivers a clean, neutral, and transparent sound, faithfully reproducing the source audio without adding coloration
- Extremely low noise floor
- Versatile due to its three gain levels (low, mid, high) and its ability to drive both sensitive IEMs and harder-to-drive headphones
Product Considerations
- Lacks balanced and unbalanced outputs for connecting to powered speakers, functioning solely as a headphone amplifier
- Does not have preamp capability
- Reviewers have noted average microdetails
- While the design looks smart and subdued, the tempered glass panel easily grabs fingerprints, requiring frequent cleaning
Comparisons (according to reviewers)
- Vs SMSL HO200: HO100 lacks RCA/XLR outputs and has lower wattage, but is more compact and is preferred if the extra power and outputs are not needed
- Vs FiiO K5 PRO: It has better driving power, a lower noise floor with IEMs, and lower distortion at maximum volume
- Vs JDS Labs Atom+: It has higher maximum power, handles maximum volume better with lower distortion, and offers better overall detail in the micro detail, and a more relaxing signature
Takeaway: The SMSL HO100 is a compact yet powerful headphone amplifier that delivers clean, neutral sound suitable for various headphones. It is well-built and offers excellent value for audiophiles seeking a high-quality listening experience.
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.
Product Page
Product Page
SMSL
SA400
462
/
Released
2021
SA400 Stereo Power Amplifier uses two sta516be digital power amplifier chips, output 230W per channel at 4 ohm, easy to drive most speakers.
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
- Plenty of headroom to drive difficult speakers
- Nice, clean, and clear sound across all frequency ranges
- Versatile for different setups, with EQ modes and tone controls
- Good value for the price
- Compact size
- Connectivity options
Product Considerations
- Only supports aptX Bluetooth codec
- Mechanical coil noise comes from its power supply
- Gets hot after about an hour of use, needing good ventilation
- Slight hum may come from sensitive tweeters
- Can sound dull in direct mode
Comparisons (according to reviewers)
- Stronger bass output than KECES S300
- SMSL SP400 has a similar neutral presentation
Takeaway: The SMSL SA400 is a powerful and versatile integrated amplifier with a clean sound that can drive most speakers with ease. It is a good option for those looking for a compact amplifier with plenty of features and the ability to adjust the sound to their liking.
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.
Product Page
Product Page
SMSL
SH-8S
229
/
Released
2021
SH-8S Headphone Amplifier features an ultra-low distortion precision linear feedback circuit (PLFC), with distortion as low as 0.00006%! It has an ultra-low noise power supply design, with output noise as low as 1.3uV.
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
- Enjoyable overall presentation with a punchy bassline, slightly euphonic midrange, and crystalline treble response
- Expansive soundstage that allows the music to breathe and come to life
- Enough power to drive most moderately hard-to-drive headphones, even those with higher impedance
- Detailed and textured vocal range that is a touch more forward and warmer than clinically accurate
- Tactile controls allow quicker access to changing any of the settings on the device
Product Considerations
- Slight bright tilt, which may require careful pairing with other components
- Bass is present, but slightly rolled off
- Lacks a screen, which some users may find to be a downside
- Balanced connection is present for convenience, as the amplifier itself is not a differential design—meaning it's single-ended by nature
Comparisons (according to reviewers)
- SMSL SH-8s bass tends to be a touch more forward, SMSL SH-9 delivers a slightly tighter bass line
- The SMSL SH-9 has a markedly more controlled treble response
- Both have similar power output at 16Ω, but Topping A30 Pro maintains higher power at 32Ω
- The SMSL SH-8s has a fuller instrument timbre, but Topping A30 Pro has a more euphonic vocal range
- The SMSL SH-8s has much bigger headroom, and feels more spacious compared to the Geshelli Labs Archel 2.5 Pro
- The SMSL SH-8s is clearly digging more details, and is also able to develop a wider soundstage with better separation and layering than the Topping L30
Takeaway: The SMSL SH-8s is a well-built amplifier that sounds promising. If the listener has darker sounding headphones or a darker source, the SMSL SH-8s might be worth checking out to open the sound a little bit.
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.
Product Page
Product Page
SMSL
A300
195
/
Released
2022
A300 Power amplifier with BTL German Infineon's new digital high-power amplifier chip has higher quality, high efficiency, and low energy consumption.
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 sound signature
- Presents a wide soundstage with crisp, well-extended high-end
- Offers exceptional value for its price point
- Functions well as a dedicated power amp
- Has a subwoofer output and high-pass filter
Product Considerations
- The internal DAC is not as resolving as the analog section, sounding somewhat congested
- Can sound artificially bright at the high end and boomy at the low end without EQ
- Low end may not be as well-controlled compared to other amplifiers
- Can sound slightly metallic or aggressive
- May exhibit limited dynamic swings
Comparisons (according to reviewers)
- Vs SMSL DA-9: A300 sounds more full-bodied and tonally correct, while DA-9 sounds a bit thin and analytical
- Vs Topping PA5: A300 pushes the soundstage a bit closer to the listener and sounds more lifelike, while not losing any of the fine details
- Vs NAD D3020 V2: A300 is much more resolving of details, tonally more neutral, and quicker on its feet
- Vs Rega Brio: Rega Brio sounds more full-bodied than A300, with tones that are more lifelike and palpable, and is the more dynamic sounding of the two
Takeaway: The SMSL A300 is a compact and affordable amplifier that offers a neutral sound signature and a wide soundstage, making it a great centerpiece for a desktop audio setup or for low-volume listening. It is a versatile and well-rounded amplifier suitable for beginners and experienced audiophiles alike.
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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