ATC SCM20ASL Classic
The ATC SCM20ASL Classic is an active two-way loudspeaker that delivers reference-quality performance for audiophiles, mastering engineers, and critical listeners alike. Designed and hand-built in the UK, this compact monitor integrates ATC’s renowned Super Linear driver technology and dedicated dual MOSFET amplification for extraordinary clarity, dynamic headroom, and tonal fidelity.
Whether you’re building a no-compromise desktop system or designing a dedicated listening room, the SCM20ASL offers exceptional timing, control, and low-end articulation in a sealed, acoustically neutral enclosure, without the need for external amplification.
Only available in-store
Category: Standmount Loudspeaker
Country: UK
Manufacturer: ATC
The ATC SCM20ASL Classic is an active two-way loudspeaker that delivers reference-quality performance for audiophiles, mastering engineers, and critical listeners alike. Designed and hand-built in the UK, this compact monitor integrates ATC’s renowned Super Linear driver technology and dedicated dual MOSFET amplification for extraordinary clarity, dynamic headroom, and tonal fidelity.
Whether you’re building a no-compromise desktop system or designing a dedicated listening room, the SCM20ASL offers exceptional timing, control, and low-end articulation in a sealed, acoustically neutral enclosure, without the need for external amplification.
Only available in-store
Category: Standmount Loudspeaker
Country: UK
Manufacturer: ATC
The ATC SCM20ASL Classic is an active two-way loudspeaker that delivers reference-quality performance for audiophiles, mastering engineers, and critical listeners alike. Designed and hand-built in the UK, this compact monitor integrates ATC’s renowned Super Linear driver technology and dedicated dual MOSFET amplification for extraordinary clarity, dynamic headroom, and tonal fidelity.
Whether you’re building a no-compromise desktop system or designing a dedicated listening room, the SCM20ASL offers exceptional timing, control, and low-end articulation in a sealed, acoustically neutral enclosure, without the need for external amplification.
Only available in-store
Category: Standmount Loudspeaker
Country: UK
Manufacturer: ATC
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Drivers
LF ATC 6.5”/150mm Super Linear, HF ATC 1”/25mm Dual-Suspension ‘S-Spec’ Tweeter
Amplitude linearity
80Hz – 20kHz (+/-2dB)
Cut-off frequencies
55Hz – 25kHz (-6dB freestanding)
Dispersion
+/-80° coherent horizontal, +/-10° coherent vertical
Maximum continuous SPL
108dB (per pair @ 1m)
Crossover frequency
2.5kHz
Recommended Amplifier Power
75 to 300 Watts
Impedance
8 Ohm (5.5 Ohm Min.)
Connectors
2 x Pairs Binding Posts/4mm Plugs – Bi-Wireable
Accessories Inc. (per pair)
2 x fabric wrapped grills.
Cabinet Dimensions
440 x 239 x 326mm / 17.32 x 9.41 x 12.83″ (H x W x D inc. grill & terminals)
Weight
18kg
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Free Delivery within Mainland UK.
60-Day Money-back Guarantee
Returns Policy
Hear It As the Artist Intended
At Soundstage, we’ve listened to countless monitors in pursuit of authentic musical presentation. The SCM20ASL is a standout: its seamless driver integration and amplifier synergy provide unmatched imaging, timbral accuracy, and low distortion. Unlike many active designs that prioritise output over nuance, this speaker reveals the soul of your music.
Its compact form factor hides a depth of engineering typically reserved for larger systems. Whether you’re working on your latest mix or immersing yourself in favourite albums, the SCM20ASL delivers a level of realism and insight that redefines what a standmount speaker can achieve.
Choose from a wide range of premium real wood veneers and paint finishes, including: Natural Gloss, Black Ash, Cherry, Walnut, European Walnut, Oak, Rosewood, Satin Black, Satin White, and more. Additional veneers and colours available on request.
Prefer a floor-standing version? Check out the SCM20ASLT—identical performance, tower design.
ATC SCM20ASL Classic Key Features
Features a 2nd-order Linkwitz-Riley design for precise signal distribution
Integrated 250W ATC Amplifier Pack
Active Crossovers with Balanced XLR Input
6" ATC Super Linear mid/bass driver in sealed enclosure
1" ATC ‘S-Spec’ dual-suspension soft dome tweeter
Dual class A/B MOSFET amps: 200W (mid/bass) + 50W (HF)
Adjustable input sensitivity & bass shelf EQ
Hand-crafted in the UK
Backed by a 6-year warranty
