Audio-Technica PRO 70 Instrument Condenser Microphone

Audio-Technica PRO 70 Cardioid Condenser Lavalier and Instrument Microphone

The Audio-Technica PRO 70 is one of the rare miniature condensers that genuinely serves two worlds — broadcast-style lavalier vocals on a presenter's lapel and clip-on acoustic instrument capture on the same gig. Audio-Technica built this model for the working musician or videographer who needs one wired mic to cover a speaker on camera, a nylon-string guitar on a soundboard, or a cello bridge. The cardioid pickup rejects side and rear bleed for cleaner separation, while the permanently polarized condenser element coaxes full-sounding tone out of sources that smaller dynamic capsules tend to thin out.

Standout Engineering: A Dual-Purpose Capsule With Two Mounting Systems

What separates this model from a typical lavalier is the supplied AT8444 instrument adapter, which lets the same capsule clip to an acoustic guitar soundhole without re-terminating the cable. The fixed-charge back plate element carries a switchable 80 Hz, 18 dB/octave roll-off on the inline power module — a feature rarely seen in this category — and the AA-battery fallback means the mic still functions on recorders or mixers that lack phantom power.

Pickup Pattern and Capsule Specs — Isolation for Live Stages

A cardioid polar pattern is the practical choice for stage presenters, podcasters, and acoustic guitarists who battle monitor wash and room reflections. By rejecting off-axis sound from the sides and rear, the PRO 70 helps the source sit forward in the mix without needing aggressive EQ or post-processing.

• Element: Fixed-charge back plate, permanently polarized condenser — purpose-built for articulate vocal and instrument reproduction rather than thin lavalier tone.
• Polar Pattern: Cardioid — rejects bleed from monitors, PA, and stage wash.
• Frequency Response: 100–14,000 Hz — shaped range that flatters spoken word and acoustic string tone.
• A 67 dB (1 kHz at 1 Pa) signal-to-noise ratio keeps dialog recordings clean straight into the camera, no aggressive noise reduction required.

Power and Operational Specs — Ready for Any Recorder or Mixer

Dual powering is what makes the PRO 70 a true hybrid. In a studio or stage rig, phantom power feeds the inline module; in the field, a single AA alkaline battery keeps the capsule running for up to 1200 hours — long enough to forget when you last swapped it.

• Phantom Power: 11–52 V DC, 2 mA typical — works with virtually any mixer, interface, or recorder that supplies 48 V phantom.
• Driven by a single 1.5 V AA / UM3 cell at 0.4 mA draw, the capsule runs up to 1200 hours on alkaline — battery swaps become a rare occurrence.
• Maximum SPL: 123 dB (1 kHz at 1% THD) — handles loud strumming and brass without breakup.
• Dynamic Range: 96 dB at 1 kHz — adequate headroom for both whispered dialog and aggressive picking.

Physical Design and Connectivity — Light, Low-Profile, Pro Connections

The microphone itself tips the scales at just 8 g, so it stays virtually invisible on a lapel, yet still mounts rigidly via the included AT8411 clothing clip or AT8444 instrument adapter. Permanently attached at 1.8 m, the cable feeds an inline power module that houses the on/off/roll-off switch and a gold-plated 3-pin XLRM-type output connector.

• Weight (microphone): 8 g — discreet enough for on-camera use.
• Weight (power module): 134 g — belt-clip-friendly for hands-free operation.
• The 1.8 m, permanently attached cable between capsule and power module eliminates one extra connector that can fail mid-session.
• Output Connector: Integral 3-pin XLRM-type, gold-plated contacts — corrosion-resistant finish for long-term gigging.
• Included Accessories: AT8411 clothing clip, AT8444 instrument adapter, power module, windscreen, AA battery, soft protective pouch — out-of-box-ready for both lapel and soundboard mounting.

Who This Microphone Is Built For

Built for working musicians, presenters, and content creators who need a single wired lavalier that doubles as an acoustic instrument mic. A solo fingerstyle guitarist performing at a house concert, a legal videographer recording depositions, and a podcast host running a Tascam DR-40 all share the same need: a small-cap, low-noise microphone that sounds at home on a tie-clip or a soundhole. The dual-power design covers both phantom-equipped mixers and battery-only field recorders, while the switchable 80 Hz roll-off keeps HVAC rumble and handling thumps out of the final mix. If the gig involves spoken word, nylon-string guitar, cello, mandolin, or any acoustic instrument that benefits from external miking, this microphone slots in without a wireless system, bodypack transmitter, or separate power supply.