Pricing and availability
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Price
Average Price: $6,990
High-end/Boutique
$300
$801+
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Budget
Standard
High-end
Price History
Based on price data from 2 merchants for "ATC Loudspeakers SCM20ASL Pro". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Step into the realm of audio precision with the ATC Loudspeakers SCM20ASL Pro. These studio monitors, which are meticulously handcrafted in the UK, promise a nearfield monitoring experience that sets a new standard for sonic accuracy. Favored by world-class engineers like George Massenburg, Chuck Ainlay, and Nathaniel Kunkel, these monitors are ready to bring your studio sound to the next level.
ATC's proprietary speakers are engineered to deliver life-like playback. The SCM20ASL Pro's LF drivers are manufactured to exacting standards at their in-house facility. Hand-wound voice coils made from flat oxygen-free copper wire operate in a precision long magnetic gap, while specially designed magnet vents reduce air flow noise and heat, thereby increasing power handling and reliability. This results in a smooth and even frequency response without the need for built-in EQ.
ATC, the Acoustic Transducer Company, was founded in 1974 by Billy Woodman, a young engineer who spent his early career working alongside some of the most notable speaker engineers of his time. Today, ATC continues to build speakers one at a time, with a commitment to quality and exceptional sound. Their legacy is echoed in the studios of Abbey Road, Sony New York, Blackbird Studios, and many more, which all trust ATC monitors for their sound engineering needs.
Key Features:
- Premium 2-way active studio monitors offering detailed mix and subtle compression and EQ changes
- Bi-amped with 250W LF/50W HF design for maximum transparency at any volume level
- Engineered for the most accurate playback, ideal for tracking, mixing, and mastering
- Sold as a pair
- Comes with ATC's 6-year limited warranty
Product specs
| Powered | Yes |
| Power Configuration | Bi-amped |
| Quantity | Pair |
| LF Driver Size | 6.5" |
| LF Driver Type | Super Linear with 3" Voice-coil |
| HF Driver Size | 1" |
| HF Driver Type | Dual Suspension Soft Dome |
| LF Driver Power Amp | 200W |
| HF Driver Power Amp | 50W |
| Total Power | 250W |
| Frequency Range | 55Hz-25kHz (cut-off frequencies) |
| Frequency Response | 80Hz-20kHz (±2dB) |
| Crossover Frequency | 2.1kHz |
| Maximum Peak SPL | 108 dB SPL (per pair) |
| Input Types | 1 x XLR |
| Enclosure Type | Sealed |
| Height | 17.7" |
| Width | 9.84" |
| Depth | 15.4" (total depth) |
| Weight | 61.6 lbs. |
FAQs
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What makes the ATC SCM20ASL Pro mk2 suitable for professional studio monitoring?
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The ATC SCM20ASL Pro mk2 features a bi-amped design with a total power output of 250W, providing detailed and accurate sound reproduction. Its frequency response of 80Hz-20kHz ensures clarity and precision for critical listening in professional environments.
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How does the sealed enclosure design of the ATC SCM20ASL Pro affect its sound?
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The sealed enclosure design of the ATC SCM20ASL Pro offers tight and controlled bass response, minimizing distortion and providing a more accurate representation of low frequencies, which is essential for precise monitoring.
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What are the connectivity options for the ATC SCM20ASL Pro mk2 studio monitors?
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The ATC SCM20ASL Pro mk2 is equipped with a single XLR input, ensuring professional-grade connectivity and compatibility with most studio equipment setups.
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Are the ATC SCM20ASL Pro mk2 monitors suitable for mixing and mastering?
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Yes, with their flat frequency response and high-resolution sound, the ATC SCM20ASL Pro mk2 monitors are highly suitable for both mixing and mastering, providing accurate sound reproduction across the audio spectrum.
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What is the power configuration of the ATC SCM20ASL Pro mk2 monitors?
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The ATC SCM20ASL Pro mk2 monitors feature a bi-amped power configuration, with 200W dedicated to the low-frequency driver and 50W to the high-frequency driver, ensuring balanced and powerful sound output.
Videos
KenLaudio Lau
ATC SCM20ASL Pro (Eva Cassidy - Autumn Leaves)
Reviews
PROS
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Exceptional clarity and detail, revealing minute changes in EQ and Compression
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Non-fatiguing sound, suitable for long mixing sessions
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Non-ported design minimizes low-frequency room issues
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Reveals mix flaws for more polished outcomes
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Neutral and transparent, outperforming other premium brands
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Fast drivers offer perfect imaging and detailed transients
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Sealed cabinet delivers tight, punchy bass without room treatment
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Consistent sound translation at different volumes
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Robust construction with massive magnets and robust basket
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Eliminates odd-order harmonics, reducing ear fatigue
CONS
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Initial sound may not seem as "pretty" or "sweet" compared to some competitors
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Heavy cabinets (62 lbs each) could be challenging to position
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Requires a sub for frequencies below 60 Hz
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May necessitate more mixing effort due to transparency
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about ATC Loudspeakers SCM20ASL Pro.
Comparisons
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The ATC SCM20ASL Pro is significantly larger than the PSI A17-M, which may affect suitability in smaller rooms.
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The price difference between the PSI A17-M and ATC SCM20ASL Pro in Mexico is $1,800 USD, potentially influencing purchase decisions based on budget.
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Owners claim ATC SCM20ASL Pro monitors outperform Neumann KH310s, particularly in dynamics and transient response, despite the higher price tag.
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Features and functionality
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The ATC SCM20ASL Pro dimensions are 25 × 45 × 39.2 cm, while the PSI A17-M measures 20 × 32 × 23 cm.
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Use cases and applications
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Mixing prog rock may not require a subwoofer, but ensuring speakers cover 20Hz to 20kHz is critical due to guitar and drum elements.
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User experience
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ATC monitors reportedly make poor mixes painfully obvious, prompting immediate corrections, and ensuring better translation across different playback systems.
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Multiple users highlight the analog nature of ATC SCM20ASL, preferring it over digital DSP monitors for a more accurate representation of mixes.
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5.0 out of 5
Based on 0 Reviews and 2 Ratings
Artist usage
Add artist
The utilitarian chic of the self-powered ATC SCM20s can be seen in the first photo and throughout this MusicTech feature from August, 2022. One can tell these are the 20s, judging by the cabinet shape, the woofer size, and coloration. At $6k per pair, DCA is not @#$%ing around... let's hope he loves them.
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use ATC Loudspeakers SCM20ASL Pro, it is most commonly used with the following gear.
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