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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
Audio TB20A
reviews
Video Review
Manufacturer details
Features
Specifications
- Power supply range: 12v-25v
- THD: ≤ 0.04%
- Frequency Range: 20Hz - 20kHz (±1 dB)
- SNR: ≥ 98dB
- Input sensitivity: ≤ 280mV
- Terminating impedance: 2Ohm - 8Ohm
- Output power: 50W + 50W + 100W Sub
- Input mode: Analog
- Power supply: 19V 4.74A 90W
Description
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:
- Fosi incorporates adjustable treble and bass controls, allowing users to customize the sound signature to their preference and the characteristics of their speakers or headphones.
- The brand emphasizes value by utilizing quality components, such as name-brand capacitors and amplifier chips, at very competitive price points.
- Fosi Audio often includes versatile connectivity options, such as RCA, Bluetooth, and pre-outs, enabling compatibility with a wide range of audio sources and setups.
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Avg. Product Price
$500
Used For Sale
3
Available (Scroll Down)
Brand Popularity
48
of 900+
Badges
Top 50 Brand
Top 250 Brand
Products Listed
23
Founding Year
2017
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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Brand Page
Our interview with the brand
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What are your favorite tracks for showcasing the strength of your products?
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Used
Fosi
All of the Brand's Used Products
What if you spend more?
Chord Electronics
Mojo 2
650
650
/
65
Reviews
Chord Electronics designs and manufactures all their products in Great Britain, setting themselves apart by using proprietary FPGA technology instead of off-the-shelf DAC chips found in most competitors' products. Their DACs and portable audio devices, featuring distinctive color-changing buttons and portholes, deliver studio-grade performance through unique technologies like the Watts Transient Aligned filter, which provides more natural and detailed sound reproduction.
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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
Chord Electronics designs and manufactures all their products in Great Britain, setting themselves apart by using proprietary FPGA technology instead of off-the-shelf DAC chips found in most competitors' products. Their DACs and portable audio devices, featuring distinctive color-changing buttons and portholes, deliver studio-grade performance through unique technologies like the Watts Transient Aligned filter, which provides more natural and detailed sound reproduction.
Product Page
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iFi
xDSD Gryphon
599
599
/
30
Reviews
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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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
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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Rega
io
725
725
/
23
Reviews
The io has been designed to offer exceptional Rega performance at an affordable price point. It uses the same amplifier stage as the multi-award winning Brio now designed to run at 30 W per channel into 8 Ω. The io features two line level inputs, a high specification Rega moving magnet phono stage, and a dedicated high quality headphone output. The io will integrate seamlessly into any home audio system whilst remaining simple to use and easy to set up. A must for demonstration.
Rega is a British hifi brand known for its minimalist, low-mass turntable designs that challenge the industry's typical heavy-mass approach to reducing vibration. Their hand-assembled turntables and tonearms use advanced materials like graphene-infused carbon fiber and feature slim yet rigid plinths with striking glass platters, reflecting founder Roy Gandy's unique engineering perspective on how components affect
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Product Strengths
- Detailed, rhythmic, and fun sound, recognizable as a descendant of the Rega Brio
- Moving magnet (MM) phono stage offers palpable midrange richness and three-dimensionality
- Good headphone output duplicates the good qualities showcased during lower-volume loudspeaker experiments
- Compact size and well-built chassis, with a satisfyingly simple remote control
Product Considerations
- Limited power output (30W per channel) demands careful speaker pairing
- Lacks digital connectivity, as it is purely an analogue amplifier
- Plastic front panel gives it an unremarkable aesthetic
- Number of inputs is limited to two line-level inputs and one phono input
- Volume control via the remote control goes up in relatively large steps
Comparisons (according to reviewers)
- Vs Rega Brio: The Brio is bigger-sounding with a more polished presentation, greater detail, and dynamic precision
- Vs Marantz PM6007: The Marantz PM6007 offers more space around the vocals and an overall maturity to the rendition, but its smoother, more laid-back approach comes at the cost of not quite being able to capture the track's energy
- Vs Rotel A8: The Rotel A8 offers a more even sonic balance, more refinement, and space
- Vs PS Audio Sprout: Although lacking an onboard digital section, the sound quality of the Rega's discrete design and overall build quality is superior
- Vs Naim Nait: The Rega io is similar to the Naim Nait, but it has better bass control
Takeaway: The Rega io is a small but capable amplifier, perfect for those who prioritize sound quality and simplicity in an analogue setup. Its compact size and engaging sound make it a great entry point into hifi audio, especially for vinyl enthusiasts.
Video review
Our take on the brand
Rega is a British hifi brand known for its minimalist, low-mass turntable designs that challenge the industry's typical heavy-mass approach to reducing vibration. Their hand-assembled turntables and tonearms use advanced materials like graphene-infused carbon fiber and feature slim yet rigid plinths with striking glass platters, reflecting founder Roy Gandy's unique engineering perspective on how components affect
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Bluesound
Powernode
949
949
/
18
Reviews
The Bluesound POWERNODE is the HiFi amp reinvented for the streaming age, combining audiophile-grade componentry and multi-room music capabilities to create an intuitive “just add speakers” hi-res sound system for modern music lovers. The compact minimalist exterior disguises 2 x 80 watts of award-winning HiFi amplification, a premium hi-res DAC design, and access to all the music ever recorded with a tap in our BluOS Controller app for smart devices and laptops.
Bluesound is one of the best entry-level amps if you're looking to dip your toes into hifi. Reviewers love it for what it offers at the price—solid dynamics and tight bass, which is exactly what you expect from good Class D. It’s the go-to pick for people new to hifi since it gives you about 75% of the high-end experience without needing a ton of power. It’s perfect for smaller setups where you want good sound without going all-in on expensive gear.
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Our summary
Product Strengths
- Punchy and musical performer
- BluOS is a treat to operate
- Convenient design as a source and amplifier in one, only needing speakers to complete the system
- Engagingly musical performer—dynamically fluid and punchy, with plenty of energy
- More neutral sounding now, making gains in clarity and insight across the frequency range
- Connectivity options are through 3.5mm headphone-type connectors, shared with mini-TosLink connections
Product Considerations
- Tough competition from other streaming amplifiers
- No way to send data out to an external DAC
- The Powernode was occasionally hard on transients and dynamic bursts
- There is no included remote
Comparisons (according to reviewers)
- The Marantz has a wider-scale, roomier soundstage and greater subtlety
Takeaway: The Bluesound Powernode is a superb streaming amplifier that is better than ever, offering excellent sonic talent and a well-rounded feature set. It provides a convenient and high-quality music experience for anyone looking to simplify their home audio setup.
Video review
Our take on the brand
Bluesound is one of the best entry-level amps if you're looking to dip your toes into hifi. Reviewers love it for what it offers at the price—solid dynamics and tight bass, which is exactly what you expect from good Class D. It’s the go-to pick for people new to hifi since it gives you about 75% of the high-end experience without needing a ton of power. It’s perfect for smaller setups where you want good sound without going all-in on expensive gear.
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What competes at this price?
Fosi
ZA3
129
/
Released
2023
The next generation balanced dual-mode Class-D power amplifier. Fosi Audio's first amplifier supporting both stereo and mono modes.
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
- 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
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.
Product Page
Product Page
Fosi
BT20A PRO
115
/
Released
2024
The upgraded version of Fosi Audio BT20A, the BT20A Pro 600W TPA3255 Bluetooth 2.0 CH Amplifier features input via Bluetooth + RCA and output for passive speakers + pre-out.
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.
Expand Details
Our Summary
Product Strengths
- Good sound quality for the price
- Small and compact size, making it versatile for various setups
- Includes bass and treble tone controls for sound customization
- Bluetooth connectivity for wireless streaming
- Upgraded internals compared to the original BT20A, including a TPA3255 amp chip
Product Considerations
- Power output may not reach advertised levels without an upgraded power supply (48V recommended)
- Bluetooth is limited to SBC and AAC codecs
- No remote control included
- Speaker binding posts may be too small for larger gauge wires or spade connectors
- One reviewer pointed out potentially shady past Amazon review practices of the company
Comparisons (according to reviewers)
- The V3 has a slightly smoother presentation overall, while the BT20A Pro has a bit more 'oomph' or loudness
- The Pro has more power, preamp output, lower THD—better aesthetics
Takeaway: The Fosi Audio BT20A Pro is a compact and affordable amplifier that delivers surprisingly good sound and offers useful features like Bluetooth and tone controls. It's a great option for those looking for a budget-friendly way to power their speakers in a small space.
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.
Product Page
Product Page
Fosi
Audio V3
109
/
Released
2023
The Next-Gen Monoblock Fosi Audio V3 Mono Mini Power Amplifier is a debut Class D audio amplifier with PFFB technology to significantly improve sound purity and system efficiency, offering a flexible solution to your home audio system.
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.
Expand Details
Our Summary
Product Strengths
- Small and sturdy, made of CNC-milled aluminium
- Delivers a premium feel with impeccable junctions and premium materials
- Minimalistic I/O with interesting features
- Impressive build quality, especially considering the price and rated power
Product Considerations
- Relies on a separate power-supply that appears to be bigger than the amp itself, which may cause cable management issues
- Gain switch only works when plugged in RCA, via the XLR input the Fosi always works at 20dB, though
Comparisons (according to reviewers)
- Compared to the WiiM Amp, it became a benchmark for many users in the sub-$500 configuration
- Compared to the NuPrime STA-100, both amps push equal numbers
Takeaway: The Fosi Audio V3 Mono Power Amp is a compact and powerful amplifier that offers great value. Its small size and impressive build quality make it a great choice for those looking for a stealthy and capable amp.
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.
Product Page
Product Page
Fosi
MC331
129
/
Released
2024
Mini Nostalgic Aesthetics Fosi Audio MC331 Hybrid Tube Integrated Amp Compact size, tube warmth, and remote control: A perfect combination for convenient and cozy audio enjoyment.
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.
Expand Details
Our Summary
Product Strengths
- Versatile connectivity with Bluetooth, USB, optical, coaxial, and RCA inputs, allowing connection to various audio sources
- Compact size makes it suitable for desktop setups and smaller spaces
- Retro aesthetic design with a VU meter and tube amp, offering visual appeal
- Delivers a warm, smooth sound signature
- Tone controls for adjusting bass and treble
Product Considerations
- Lacks support for LDAC or aptX for Bluetooth audio
- May exhibit background noise with sensitive IEMs (in-ear monitors)
- Some reviewers found the staging—especially with headphones—very collapsed
- The remote did not have the best reach and sensitivity, according to one reviewer
Takeaway: The Fosi Audio MC331 is a multi-functional and visually appealing amp that offers a warm sound and versatile connectivity for an enjoyable listening experience. It is a great option for those looking for a budget-friendly all-in-one audio solution with a vintage touch.
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.
Product Page
Product Page
Fosi
BT30D PRO
109
/
Released
2023
Advanced 2.1CH Bluetooth 5.0 Receiver Amplifier achieves HiFi music quality, the best choice for your home audio entertainment. You can connect passive speakers/passive subwoofer/powered speakers/powered subwoofer to DIY a stereo sound system. Fosi Audio BT30D Pro is the upgraded version for BT30D.
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.
Expand Details
Our Summary
Product Strengths
- Massive power output for its size, with 2x165W + 350W for a 2.1 system configuration
- Very effective treble and bass EQ adjustments with analog knobs that do not introduce noise or distortions, even when cranked up
- Surprisingly rugged build quality, with a full aluminum build, including metal knobs
- Can drive either passive or active speakers and is equipped with a subwoofer output in addition to a full-range 3.5mm pre-out
- Bluetooth sounds almost as good as a wired RCA connection
Product Considerations
- Does not have an IR remote
- The power converter may have a physical buzzing noise, audible when close to it
- Midrange has some coloration and slight distortion at louder volumes
- The speaker terminals are a little cramped
- There is no central stop point for 0db bass/treble boost
Comparisons (according to reviewers)
- Vs Dayton Audio DT100A—BT30D Pro feels more powerful, gets louder, and has a higher build quality
Takeaway: The Fosi Audio BT30D Pro is a powerful and versatile amplifier with great EQ control, making it a superb choice for a 2.1 audio system. It delivers clean and detailed sound with surprising power for its compact size.
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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