Skip to content

ATC SIA2-100 - Audiophile Integrated Amplifier

by ATC
Original price Rs. 315,000.00 - Original price Rs. 315,000.00
Original price Rs. 315,000.00
Rs. 315,000.00
Rs. 315,000.00 - Rs. 315,000.00
Current price Rs. 315,000.00

One-Box Convenience, Separates Performance: U.K.-Built ATC SIA2-100 Integrated Amplifier/DAC Features High-Res Support, Input Flexibility, All-Discrete MOSFET Output Stage

Designed to work in harmony with the ATC CD2 CD player yet able to effortlessly pair with practically any other combination of source components, the British company's SIA2-100 integrated amplifier/DAC offers the convenience of a compact one-box unit and the finessed performance of separates.

Hand-built in the U.K., SIA2-100 proves its mettle by driving almost any loudspeaker with authority, control, and grip. A premium 32-bit AKM DAC, high-resolution USB input capable of up to 32-bit/384kHz and native DSD256 decoding, and a Class A headphone amplifier complete with high-sensitivity input skim the surface of its high-end abilities.

Conservatively rated at 100Wpc (into eight ohms), SIA2-100 is engineered to pass rigorous tests with flying colors. Lateral, discrete MOSFETs employed in a common-source configuration in the output stage produce extremely low distortion while yielding tremendous frequency response. Separate power supplies for the preamplifier and amplifier sections, a peak limiter to protect speakers in the event of overdrive, and discrete analog use of multiple power-supply regulators all contribute to transfixing sonics punctuated by wide-range dynamics, alluring smoothness, and class-leading neutrality. You'll hear music with rarified naturalism, purity, and balance.

In addition to its intentionally scaled-down two-thirds-width size that can more easily fit in more places, SIA2-100 offers the connectivity modern listeners demand. Two pairs of line-level inputs, a Toslink input, a coaxial input, USB-B input, and front-panel 3.5mm jack accompany a pair of speaker binding posts, stereo line-level output, and front-panel headphone output. An ALPS potentiometer, rigid precision-machined aluminum front panel, and remote control also come standard.


  • 2 x line level analogue inputs
  • 3 x digital inputs: USB, Coaxial, TOSLINK
  • Premium AKM 32-bit DAC
  • USB digital input supports up to 384kHz PCM data
    and native DSD256*
  • ATC Discrete MOSFET Output Stage with
    100W/Ch. Max. Cont. Power.
  • Headphone amp featuring discrete output stage
  • Compact Size – 2/3rds width
  • Handmade in England


  • Maximum Power Output: 100W (Continuous Av. 8 Ohms, 1kHz, both channels driven)
  • Line Inputs: Two, stereo (one with additional front panel 3.5mm jack)
  • Line Input Sensitivity: 500mV
  • Input Impedance: 13k8 Ohms
  • Line Outputs: One, stereo
  • Overload Capacity: 13dB
  • Line Output Impedance: 10 Ohms
  • Frequency Response: < 2Hz – > 250kHz (@ -3dB)
  • Total Harmonic Distortion: 1kHz <0.0015% (-96dB), 10kHz <0.002% (-90dB)
  • Crosstalk: >80dB (10Hz – 20kHz)
  • S+N/N Ratio: Wide Band > 96dB, DIN > 108dB, > IEC “A”112d
  • Dimensions (HxWxD): 113 x 315 x 315mm / 4.4 x 12.4 x 12.4”
  • Weight: 9.70kg (24.39lbs)

  • Distortion: 1kHz <0.0015% (-96dB ), 10kHz <0.005% (-86dB)
  • Frequency Response: 20Hz – 20kHz (+/- 0.1dB)
  • S+N/N Ratio: >100dB (IEC “A”)
  • Word Lengths Supported: 16 – 24 Bit
  • Sample Rates Supported: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 192kHz (192kHz supported via coaxial input only)
  • Distortion: 1kHz <0.0015% (-96dB ), 10kHz <0.005% (-86dB)
  • Frequency Response: 20Hz – 50kHz (+/- 0.1dB)
  • S+N/N Ratio: >100dB (IEC “A”)
  • Word Lengths Supported: 16 – 32 Bit
  • Sample Rates Supported: 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96.0kHz, 76.4kHz, 192.0kHz, 352.8kHz, 384.0kHz
  • Frequency Response: 10Hz – 50kHz (+/- 0.1dB)
  • S+N/N Ratio: >100dB (IEC “A”)
  • DSD Rates Supported: Windows DSD64, DSD128, and DSD256, MAC OS DSD64 and DSD128


    Reviews & Awards