Audio Technica AT-3527 (1998)
The AT-3527 was the omnidirectional condenser in Audio-Technica's 30 Series microphone line, which debuted in early 1998. Studio Sound (July 1998, p.40) described the new series as cost-effective. It noted that the AT-3527 and AT-3528 were small-diameter electret condensers, while the AT-3535 used a medium-diameter diaphragm.
The rest of the surviving record is mostly advertising. A-T's own launch ads in EQ (March 1998, p.33) and Mix (March 1998, p.53) listed the AT-3527 as an omnidirectional condenser microphone at a $299 suggested retail price, alongside the cardioid AT-3525 at $399. An EQ preview (February 1998, p.34) reported the company's claim of 30 Hz–20 kHz frequency response for the trio, and noted that every 30 Series mic had built-in switches including a −10 dB pad; the full switch configuration isn't clearly documented in what survives.
That's about all that's firm. No standalone period review of the 3527 has surfaced — the one EQ audition from June 1998 covers the AT-3525, its cardioid sibling — so if you own one, you have a genuinely under-documented piece of A-T's late-'90s budget studio lineup.
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