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This listing is for an ATC SIA2-100 stereo integrated amplifier with original packaging and remote control.I purchased this as ex-demo from Terry of GC HiFi in October 2022 (original receipt available) and would conservatively rate it as being in very good condition.This amp comes with 3 digital ...
ATC’s SIA2-100 has a solid reputation as the entry point into the brand’s integrated range: compact, high-current, and very transparent rather than romantic. At A$2,799, this is a strong deal versus the recent used market anchor of A$3,714 median and A$2,203 25th percentile; it sits comfortably below fair-market midpoint without being absurdly cheap.
What makes it worthwhile is the combination of 100W per channel, built-in DAC, and ATC’s no-nonsense, studio-leaning control, which suits speakers that like grip and precision. The price leaves room for a genuinely desirable piece from a respected maker, and if the unit is clean and complete, it’s an easy one to shortlist. I’d mainly want to confirm the remote, DAC inputs, and overall condition, but at this level the listing reads as a buying opportunity rather than a risk.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
ATC (Acoustic Transducer Company), a British engineering powerhouse, was founded in 1974 by innovative loudspeaker designer Billy Woodman. Initially focused on crafting custom drive units for the professional audio sector, the company quickly gained acclaim with its 12-inch PA75-314 driver, renowned for superior power handling and minimal distortion at high sound pressure levels. In 1976, ATC introduced the groundbreaking SM75-150 soft dome midrange driver, revolutionizing dispersion, bandwidth, and clarity in studio monitors.
The brand specializes in high-precision loudspeakers, designing and manufacturing its own drivers—including tweeters, midrange, and bass units—in-house for both professional and home applications. Its SCM series offers a spectrum from compact models like the SCM7 to larger formats, available in active and passive configurations. ATC also produces standalone electronics, such as preamplifiers, power amplifiers, and integrated amps like the SIA2-150, all built to uncompromising standards of accuracy and reliability.
ATC commands a elite position in the high-end hi-fi market, revered by recording studios worldwide for its transparent, detail-revealing monitors and by discerning audiophiles for domestic speakers that deliver reference-grade performance. A professional ethos, advanced materials, and innovations like the Super Linear Driver—slashing distortion in the vocal range—cement its status as a boutique leader, where precision engineering trumps mass production.
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