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The ATC SIA2-100 is a compact stereo integrated amplifier with a built-in 32-bit AKM DAC. It delivers 100W per channel from a discrete MOSFET output stage and adds USB, coaxial and optical digital inputs alongside two line-level analogue inputs. A discrete headphone amp is built in. It suits listeners with small to mid-size passive speakers who want one box for both digital and analogue sources, and it is handmade in England with a six-year warranty. Against rivals it trades streaming features and room correction for straightforward high-current amplification and a strong DAC.
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Owners of ATC's integrated amps generally praise the clean, controlled sound and the solid build. The built-in DAC is seen as a genuine convenience rather than an afterthought. Criticism tends to focus on the lean feature set for the money.
The ATC SIA2-100 is a compact stereo integrated amplifier with a built-in DAC. It delivers 100W per channel from a discrete MOSFET output stage and has a headphone amplifier with its own discrete output stage. It is handmade in England and covered by a 6 year warranty.
It has 2 analogue line inputs and 3 digital inputs (USB, Coaxial and TOSLINK). The DAC uses a 32-bit AKM chip. The USB input supports up to 384kHz PCM and native DSD256. A stereo pair of RCA pre-amp outputs is also included.
The amplifier suits ATC's small and mid-size passive loudspeakers and a wide range of speakers from other makers. Its styling is understated and its footprint is small. It pairs with the ATC CD2 CD Player.
