ATC SCA2 Discrete Stereo Pre-Amplifier

The SCA2 is ATC’s highest performance preamplifier and has been in continuous production since 1996, testament to its exceptional performance and timeless styling.

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It is the ideal partner to ATC’s high-end active loudspeakers and also power amplifiers, such as the ATC P2.  Balanced and unbalanced inputs and outputs provide flexible connectivity to a very wide range of partnering equipment.  The optional phono stage is fully configurable for both gain, resistive and capacitive loading and its low-noise design makes it well suited to even the lowest output moving coil cartridges.


  • Discrete class-A low-noise circuitry throughout.
  • High-current output stages ensure exceptionally low distortion into any load & when driving long cables.
  • 500kHz bandwidth eliminates phase shift and contributes to the outstanding reproduction of fine musical detail.
  • Optional SPH2 MC/MM RIAA precision phono stage with extensive gain/loading options.
  • 2 x stereo balanced XLR line inputs & 6 x stereo RCA/Phono line inputs.
  • 1 x stereo balanced XLR & 1 x stereo single-ended RCA/Phono preamp output.
  • Billet Aluminium IR Remote Control.
  • Hand built in the UK & covered by a 6-year warranty.

Frequency Response: D.C. – >500kHz (-3dB)
THD: < 0.0005%/ -106dB (1kHz, 1V, 600 ohms) 
S+N/N Ratio: >108dB (IEC ‘A’)

Crosstalk: >90dB (10Hz – 20kHz)
Input sensitivity: 230mV (re. 1V output) 
Maximum Output Level – Balanced: 17V r.m.s (600 ohms)

Maximum Output Level – Unbalanced: 8.5V r.m.s. (600 ohms)

Analogue Pre-Amp Outputs: 1 x stereo male XLR (balanced), 1 x stereo RCA/Phono (unbalanced)

Analogue Tape Output: 2 x stereo via RCA/Phono 
Analogue Inputs: 2 x stereo via female XLR (balanced), 6 x stereo via RCA/Phono (unbalanced

RIAA Input: Optional via addition of internal card (converts 1 x stereo line input). Configurable Moving Coil / Moving Magnet (MC/MM) with adjustable gain & loading.

Dimensions: 102 x 440 x 353mm / 4.0 x 17.3 x 13.9 inches (H x W x D)

Weight: 6.85kg / 15.07lbs