ATC SIA2-100 integrated amplifier

REVIEW
Jason Kennedy
Mar 23, 2022

ZZ Top bass player Dusty Hill sadly passed away toward the end of my listening, so I paid my respects by putting Tejas [Warner Bros] on the turntable and allowing the Rega Aphelion 2’s stylus to work its way across side A to the fabulous ‘Enjoy and Get it On’. The needle was sufficiently warmed by the third track for the raw sound of the band’s precision boogie to really get under my skin and by the time the desired track came around it was smoking, Billy Gibbons’ guitar delivering a scorching solo over the perfectly synched rhythms of Hill and drummer Frank Beard. With a digital source supplying a line level signal you get a bit more detail and finesse than the onboard DAC with equally impressive timing but in truth the result wasn’t dramatically superior to the onboard converter, and that, for a £2.5k component, is a decent result.

The ATC SIA2-100 is a remarkably well-equipped and powerful integrated amplifier that will satisfy the cravings of anyone who enjoys a bit of power behind their sound. It will drive a wide range of loudspeakers and delivers engagingly musical results while doing so. What’s not to like.

TECHNICAL SPECIFICATIONS

Type: Solid-state, two-channel integrated amplifier with built-in DAC and headphone amplifier
Analogue inputs: Two single-ended line-level inputs
(via RCA jacks)
Digital inputs: Two S/PDIF (one coaxial, one optical), one USB port
Analogue outputs: One single-ended pre-out
(via RCA jacks)
Supported sample rates:
Coaxial S/PDIF: 16-bit, 24-bit — 32kHz to 192kHz
USB: 16-bit, 24-bit, 32-bit — 32kHz to 384kHz
Input impedance: 13.8kOhms
Output impedance (line): 10 Ohms
Headphone Loads: Not specified
Power Output: 100Wpc @ 8 Ohms
Bandwidth: < 2 Hz – > 250 kHz (-3dB)
Distortion: 1kHz <0.0015% (-96dB), 10kHz <0.002% (-90dB)
Signal to Noise Ratio: Wide Band > 96dB, DIN > 108dB, > IEC “A”112dB
Dimensions (H×W×D): 113 × 315 × 342mm
Weight: 9kg
Price: £2,500