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
- Designed specifically for JL Audio in-wall 8-inch Fathom subwoofers, ensuring optimal performance
- Special connectors ensure a secure and firm connection, preventing wires from pulling out
- Includes a calibration mic that optimizes the sound in the room using JL Audio's patented technology and an 18-band EQ
- Class D amplifier has patented technology for better responsiveness and performance
Product Considerations
- JL Audio enclosures and subs are currently back-ordered
- Retrofitting the in-wall subs requires cutting open the walls, which can be messy
Comparisons (according to reviewers)
- JL Audio in-wall subs are compared to box-style subs, with the reviewer initially skeptical that in-wall subs could match the sound quality of box-style subs, but ultimately being impressed
- The JL Audio amplifier is different—and better—than other amplifiers for subs the reviewer has dealt with
Takeaway: The JL Audio amplifier for Fathom subwoofers is special because it is specifically made for the subwoofers and it provides room optimization through its calibration software. The secure connection design and the Class D amp design with patented technology contribute to creating phenomenal sound and performance.
All
Fathom SA-600W
reviews

Manufacturer details
- Amplifier Power: 600 W x 1 at 3 ohms, 450 W x 1 at 4 ohms, 300 W x 1 at 6 ohms, 225 W x 1 at 8 ohms
- Width (W): 16.84 in / 428 mm
- Height (H): 1.75 in / 44 mm
- Depth (D): 13.63 in / 346 mm
- Net Weight: 13.5 lb / 6.12 kg
- Filter Frequency Range: 30 Hz - 130.1 Hz
- Equalizer Bands: 3
- Equalizer Frequency Range: 20 to 160 Hz (1 Hz increments)
- Equalizer Gain Range: -12 dB to +12 dB (0.2 dB increments)
- Equalizer Q Range: 0.7 to 5.0 (0.1 increments)
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:
- JL Audio subwoofers are designed and built in-house, allowing meticulous control over every aspect of performance, from driver design to amplifier circuitry.
- They utilize patented technologies, such as DMA (Dynamic Motor Analysis), VRC (Vented Reinforcement Collar), and FCAM (Floating Cone Attach Method), for reduced distortion and superior transient response.
- The brand's subwoofers strike a balance of power, extension, and control, suiting both demanding home theater setups and hifi two-channel music systems.
- JL Audio offers proprietary room optimization technology, DARO (Digital Automatic Room Optimization), using multiple bands of digital equalization to effectively compensate for problematic room acoustics.
Select products
Dominion:
- Positioning: Entry-level line, designed for affordability and compactness.
- Description: Offers a compact design with a powerful Class D amplifier, making it ideal for small spaces and budget-conscious buyers. Features a DMA optimized driver for precise sound, unlike the E-Sub which offers more power and size options. This makes it suitable for users who need a subwoofer for a small room or desktop setup without compromising on quality.
E-Sub:
- Positioning: Mid-range line, balancing performance and value.
- Description: Provides a robust performance with a long excursion driver and a proprietary switching amplifier, delivering high-quality sound in a compact form. Compared to the Dominion, offers more power and a refined design. Its top-mounted controls and finish options add to its versatility and aesthetic appeal.
Fathom v2:
- Positioning: High-performance line, designed for larger spaces and demanding applications.
- Description: Equipped with ultra-long throw W7-HT drivers and a powerful amplifier, offering exceptional low distortion and deep bass. This series is more powerful than the E-Sub, making it ideal for larger rooms or home theaters where high output and clarity are essential. Its advanced DSP and room optimization features enhance sound precision and dynamic range.
Gotham v2:
- Positioning: Flagship line, offering the ultimate in performance and luxury.
- Description: The pinnacle of JL Audio's subwoofer lineup, featuring dual 13W7-HT drivers and a 4,500-watt amplifier for groundbreaking power and control. It surpasses the Fathom series with its superior build quality and advanced technologies like D.A.R.O. Its exquisite craftsmanship and performance justify its premium price.
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Used
JL Audio
What if you spend more?
Building on NAD’s long tradition of identifying and developing cutting-edge amplification technology, the M23 HybridDigital Stereo Power Amplifier features Purifi Audio’s Eigentakt™ design, a once-in-a-decade innovation that virtually eliminates harmonic and intermodulation distortion. Noise is inaudible, for a completely black background and exquisite micro-detail. Conservatively rated at 2x200W continuous into 8 ohms and 2x380W into 4 ohms, the M23 can deliver live performance levels through any loudspeaker. With its unique combination of features, performance, and value, the M23 represents the new benchmark for the stereo power amplifier.
Our summary
Product Strengths
- The M23's build quality feels solid and elegant, with impressive small design details
- The sound is striking in its purity and clarity
- It offers up to three levels of gain, switchable on the back panel, to best fit the system
- It provides a clear sound without sounding hard
- It features Purifi Eigentakt Class D amplification, which provides virtually unmeasurable distortion levels
Product Considerations
- The bass is clean but may be perceived as a little on the cool side and not as 'wompy-sounding'
- The M23 is not a forgiving amplifier that makes everything sound sweet and wonderful—it's not for those seeking a soft and mellow sound
- Bridging with speakers below 5 or 6 ohms is not recommended, as the amp will current limit and potentially shut down
- The reviewer found ergonomical challenges using fancy speaker cables in bridged mode due to wide terminal spacing
- The capacitive touch power button can accidentally trigger
Comparisons (according to reviewers)
- Vs Bel Canto C6i: The M23 offered a layer of refinement and better reproduction of the recording space
- Vs Pass XA25: The M23 had more transparent sound and detail, especially in the treble and upper mids, but lacked the organic quality of the XA25
- Vs HiFi Rose RS 520: The M23 sounded cleaner and had better separation/depth, HiFi Rose seemed to have an EQ built-in, emphasizing midrange and bass
- Vs NAD C298: The M23 is more neutral, deals with decay more naturally, and has better casework, making it look high-end
- Vs Anthem M1 monoblock amplifiers: The M23 was slightly more transparent throughout the entire frequency range
- Vs Bryston 4B 3: The Bryston had more grunt but the M23 is more neutral
Takeaway: The NAD M23 is a powerful and precise amplifier that delivers clean and clear sound, making it a great choice for audiophiles who want to hear their music as accurately as possible. It is especially well-suited for those looking to build a high-end system around a quality preamp or DAC.
Video review
Our take on the brand
Our summary
Product Strengths
- Delivers ample, clean, and dynamic power to all channels, ensuring speakers reach their full potential
- Designed by John Curl, featuring Class A/AB circuitry for a balance of warmth, richness, efficiency, and punch
- Pleasing sound for dialogue and music, with very high-quality and detail
- Versatile, suitable for both movies and music, with a low noise floor for quiet passages and great transparency—that doesn't color the sound
- Built to last, with high-quality internal components
- Signal-sensing power-on mode can be fussy and may require adjustment
Product Considerations
- Super heavy and large, potentially requiring rearranging a system or dedicated rack space
- Only available in anodized black
Comparisons (according to reviewers)
- The A52 Plus has bigger parts and bigger power than the Outlaw Model 5000, including balanced XLR connections
- A52 Plus is the 'teenager' compared to the elder Parasound A51
- Parasound A52+ sounds better, is more accurate, and more powerful than the Denon receiver's amplifier section
Takeaway: The Parasound A52+ Halo is a versatile and powerful amplifier that delivers clean, dynamic sound for both home theater and music systems, with a build quality designed to last. This is a worthy investment for audiophiles and home theater enthusiasts who seek high-quality audio performance.
Video review
Our take on the brand
This amplifier has an independent power supply for each channel and 87,200uF (43,600 per channel) of added capacitance on the power supply rails. The Starkrimson® Stereo Ultra DMC offers phenomenal sonic performance. Its advanced design and meticulous construction ensure exceptional clarity, power, and dynamic range. Experience the nuances of your favorite recordings with crystal clear detail and realism. A must-have for discerning audiophiles, and music lovers/enthusiasts seeking to elevate their musical experience.
Our summary
Product Strengths
- Exceptionally transparent sound output quality
- Exceptionally powerful, capable of outputting 500W into a 4-Ohm load
- Delivers a remarkably clean, transparent sound with very little noise or distortion
- The amplifier's ability to reproduce bass is awe-inspiring and delivers deep, powerful bass without distortion
- Runs cool and weighs very little for its sound output, making it easy to move around
Product Considerations
- Options can be a little pricy, such as the 12v trigger and RCA inputs
- The Starkrimson Stereo Ultra may lead to further system upgrades
- Depending on your sources, the Starkrimson Stereo Ultra will play exactly what you feed it, good or bad, and if your source components are slow, the Starkrimson Stereo Ultra will not speed them up
- Power on only after all connections are properly made, including the power cord, analog inputs, and speaker outputs, and wait five minutes after powering it off before removing any of the connections
Comparisons (according to reviewers)
- Compared to the Krell S550i integrated amp, the Starkrimson Stereo Ultra showed a much faster and finer resolution of the upper frequencies of the human voice and a far greater ability to play more of the microdetails of a recording
Takeaway: The Starkrimson amplifier is well-built and provides a level of speed and transparency to hifi music that makes listening to music very fun. Its GaN modules can be upgraded and it is available in several configurations.
Video review
Our take on the brand
Product Strengths
- A lovely, lush sounding performance that's hard to dislike and sounds smooth but far from lifeless, delivering high levels of detail in a cohesive and musical manner
- A sympathetic performer, it prefers to play to its inferior partnering equipment's strengths than overly expose their weaknesses, as many hifi audio examples tend to do
- It can cater for a wide range of headphones and connections and it is a benchmark product that's highly recommended
- Zero musical flaws to report and is nearly perfect in execution
- A stunning design to the eye and ear, it is overall a wonderful addition for the perfectionist who wants the very best performance at home or even in the studio
Product Considerations
- The volume control operation lacks linearity, making it hard to make subtle changes in level
- No input selector, so one should only connect one type at once
- On some samples, the volume control is loose and wiggles in its chassis housing
- The octal AC socket is a bit of an odd choice, considering most users might prefer IEC
- The depth, snap and weight of the low end was dynamic and exciting on some recordings and less than stellar on others
Comparisons (according to reviewers)
- Vs Musical Fidelity M1 HPA—the MHA200 has a lush warmness to the music that brings strings to life in a way that makes the M1 HPA sound somewhat sterile in comparison
- Vs EAR Yoshino HP-4 reference—the MHA200 was a touch brighter than the reference, though only slightly
Takeaway: The MHA200 is an enjoyable product with a rich, balanced, and powerful sound, that's more forgiving than most rivals and can be enjoyed for years to come. This headphone amp is perfect for personal listening, design, and operation that will work its magic.
Video review
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What competes at this price?
Our Summary
Product Strengths
- Delivers a tube-like sound, with a warm and musical presentation
- Robust power supply with substantial capacitance (200,000 microfarads) provides good bass control and dynamics
- Transparent and precise sound, with a wide and deep soundstage
- Balanced design with both RCA and XLR inputs, the latter offering a cleaner and more dynamic sound
- Offers excellent value, outperforming other amplifiers in a similar price range
Product Considerations
- Requires a pre-amplifier to control volume
- May exhibit slight transformer noise when close to the unit
- Does not have pop control, requiring caution when plugging/unplugging connections
- Some reviewers found the logo placement slightly off-center and the blue LED power light too bright
- Bass control is not as punchy or defined for some tastes, leaning towards a tube-like bass delivery
Comparisons (according to reviewers)
- The TSA-75 has a different, more flavorful sound signature compared to the Orchard Audio's neutral sound
- The TSA-75 provides superior micro detail, cleanliness, clarity, and stereo imaging, compared to Schiit Audio Vidar 2
- Performance is head-to-head with the Denafrips Thalo, depending on sound preference—the more balanced, snappy presentation of the Thalo, or the more V-shaped sound with greater depth and soundstage of the TSA-75
- The TSA-75 has a distinct sound signature, unlike Emotiva amps
- The TSA-75 outperforms the McIntosh MC275 Mark VI in audiophile performance
Takeaway: The Galion Audio TS A75 is a well-built amplifier that delivers a warm, tube-like sound with good bass and a wide soundstage. It provides excellent value and is a great choice for those looking for a musical and engaging listening experience.
Video review
Our take on the brand
Our Summary
Product Strengths
- Robust, effortless power with excellent control makes it easy to drive all speakers with authority and deliver a satisfying listening experience.
- Balanced and neutral sound, with a solid low end that prevents it from sounding dull or anemic, while also ensuring it is not too aggressive to cause listening fatigue.
- Excellent timing makes music engaging and foot-tapping, and is particularly impressive with genres such as R&B and soundtracks.
- Built in the USA, it has a 5 year warranty and 15 day satisfaction guarantee
Product Considerations
- Not ideal for listeners seeking a romantic, sweet, and smooth midrange, or those who prefer a very lively sound.
- The amp required careful system matching to achieve its full potential, particularly needing a high-end preamp to unlock greater refinement and resolution.
- Bass performance might be seriously challenged by more modern amplifiers.
- There is a slight differential in gain
Comparisons (according to reviewers)
- Compared to Emotiva A1s, the Tyr has more bass, more clarity in the bass, and is less veiled overall
- Reminiscent of McIntosh 7270—the Tyr gives off similar 'Mac vibes'.
Takeaway:
The Schiit Tyr monoblocks deliver a lot of power and control, making music sound good with a balanced and neutral style. It's a great option for an amplifier that can handle almost any speaker and is versatile.
Video review
Our take on the brand
Our Summary
Product Strengths
- Breathtaking design with curved corners, symmetrical front faceplate, and a glass component revealing internal circuitry
- Powerful headphone amplifier capable of outputting up to 10W at 16Ω and 7W at 32Ω
- Good sound quality, described as clean, detailed, and punchy, with a balanced tonal presentation
- CNC machined aluminum remote control with rubber buttons
- Multiple inputs and outputs, including 6.35mm, 4.4mm, and 4-pin XLR outputs on the front, and optical, coaxial, AES, IIS, USB, and Bluetooth on the back, with RCA and XLR outputs for lineout and preamplifier lineouts
Product Considerations
- Glass top panel gets hotter than the aluminum housing
- The glass panel is a fingerprint magnet and requires cleaning regularly
- No analog line-in to pair the amplifier with 3rd party DACs
- No streaming capability via WiFi or LAN
- Some menu navigation can be cumbersome, requiring cycling through options rather than direct selection
Comparisons (according to reviewers)
- Compared to the Topping A90 and D90 stack, the DX9 has similar inputs, outputs and power, but the stack is more versatile, as the amp and DAC can be used separately— the DX9 has additional coaxial and optical inputs, and the sound is somewhat similar
- Compared to the HIFIMAN EF400, the DX9 has more inputs/outputs and more power, but the EF400 sounds warmer
- Compared to the Topping D90SE, the DX9 sounds more fun, its bass and midrange has more energy and oomph, but the D90SE is more transparent, though ultimately quite flat
- Compared to the AURALiC Altair G2.1, the DX9 sounds cleaner and better separated, with a small reduction in digital hash
Takeaway: The Topping DX9 is a beautiful and powerful all-in-one DAC/amp that offers a clean and detailed sound, making it suitable for both headphone and speaker setups. Its versatility and attractive design make it a compelling option for those seeking a high-quality audio solution.
Video review
Our take on the brand
Our Summary
Product Strengths
- GANFET transistors switch faster, are more heat resistant, and produce less distortion than MOSFET transistors
- A monstrous 400-watt regulated power supply
- Designed to work specifically with a source with a variable output, be it a silver disc-spinning device or one of today's best yet affordable HD music streamers
- Offers a level of audiophile performance that well exceeds any reasonable expectations that come with the amp's modest price tag
- Offers a super clean minimal setup when paired with the Bluesound Node
Product Considerations
- Has only one digital coaxial input, limiting connectivity options and expansion
- Lacks volume indication on the unit itself, requiring reliance on the source's volume control
- Some reviewers noticed a high-pitched noise coming from early prototypes, which was later fixed by Peachtree
- Isn't the type of amp that makes a poorly recorded song sound better
- Is a non-standard size
Comparisons (according to reviewers)
- Vs Bluesound Power Node: Setup has a much more substantial mid-range, better low-end control, and ever so slightly better speed with rhythmic transient attack
- Vs NAD M10 V2: Is the more dynamically relaxed
- Vs Hegel H190: Reviewers actually preferred the more forward presentation of midrange
Takeaway: The GAN1 is a forward-thinking piece of tech that prioritizes simplicity and sound quality for those who want to just stream music. It provides outstanding value and impressive performance, especially for those looking for a minimalist, high-fidelity system.
Video review
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Our Summary
Product Strengths
- Clean and clear music with a very dead black background, allowing the music to breathe and swell naturally
- Very firm and deep bass response, sounding incredibly powerful
- Delivers a muscular sense of control over musical dynamics and instrumental transients, confirming an abundance of reserve power
- Accurate and transparent sound, reflecting changes in equipment and cables
- Sound signature similar to a really good class AB or class A amplifier, with natural and transparent sound and very good power and control
Product Considerations
- Some users may find the lack of an on/off light and remote control disconcerting
- At 105 dB range, the bass control gets weaker and the bass gets less pronounced
- Synergy-wise, it does not work well with R2R pre-stages
- Some found it a little less dynamic and a little too soft, but still good and engaging
- Needs to be powered on only when something is plugged into the outputs to avoid damage
Comparisons (according to reviewers)
- Vs Starke Sound ZA3s: Starkrimson is the next step above in clarity and power for home theater applications
- Vs SMSL A10A: There was an immediate change in soundstage and clarity when Starkrimson replaced the SMSL
- Vs Peachtree Nova: Starkrimson offered a riveting sound presentation, as opposed to the Peachtree Nova, which was less bold, but somewhat more nuanced
- Vs Class AB amp up to $3,000: Starkrimson has better noise control, accuracy, and transparency
Takeaway: The Starke Sound amplifier is a simple unit which produces a clean sound, with good detail and power. This amplifier is a great choice for audiophiles looking for a high-quality listening experience.
Video review
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