What is a Microdot connector and will it work with my wireless system?

Microdot is a compact, locking connector standard used by AKG wireless packs and compatible systems. The HC644 MD includes an MDA1 adapter to interface with standard XLR or 3.5 mm inputs, so it integrates with most professional wireless packs and recorders.

How does the cardioid pattern reject noise in noisy live venues?

The cardioid polar pattern picks up sound primarily from the front (the wearer's mouth) and rejects sound arriving from the sides and rear, isolating the speaker's voice from audience, stage monitor, and ambient noise. This directional rejection is critical for clean, intelligible speech in theater, broadcast, and high-SPL environments.

Is this microphone suitable for music or instrument recording?

No. The HC644 MD is engineered specifically for speech and dialogue; its frequency response (100–15,000 Hz) and presence peak are tuned to vocal clarity, not musical tone or low-end extension. It is not recommended for music recording or studio instrument work.

What accessories are included?

The package includes the MDA1 adapter (for XLR/3.5 mm compatibility), a windscreen to reduce breath and wind noise, and a carrying case for transport and storage.

Can the HC644 MD handle outdoor use and temperature swings?

Yes. The microphone operates reliably across –20°C to +60°C (–4°F to 140°F), and its sweat-resistant construction is designed for high-movement outdoor theater, sports broadcasting, and live events in varied climates without performance loss.

Do I pay sales tax on this order?

We collect sales tax only on orders shipped to California. Orders shipped to any other US state are charged $0 sales tax at checkout when you buy direct from our website. On this item that is roughly $25 less out the door than the same listed price at a national retailer or on a marketplace. Marketplaces such as eBay, Reverb and Amazon collect sales tax in nearly every state as marketplace facilitators no matter who the seller is, so the same item at the same price costs less bought direct. Free US shipping and 30-day returns are included. Some states ask buyers to self-report use tax on out-of-state purchases.

AKG HC644 MD Lapel Microphone

The AKG HC644 MD is a lightweight, discreet lapel condenser microphone built for live performers, presenters, and anyone running sound in theater, broadcast, or venue settings. At just 0.07 lbs, this back-electret design stays put without shifting or fatiguing the wearer, and its sweat-resistant construction survives the physical demands of live performance and high-movement environments. The cardioid polar pattern isolates the speaker's voice effectively, rejecting ambient noise from the sides and rear—critical for keeping feedback and room noise out of your mix.

Audio Performance

Delivers clear, intelligible speech with a 100–15,000 Hz frequency response that captures vocal detail while rolling off rumble and extreme highs that add no value to dialogue. The 60 dBA signal-to-noise ratio and 34 dBA equivalent noise floor ensure clean audio even in moderately noisy venues, while a maximum SPL of 135 dB handles raised voices and peak transients without distortion—important for live sound where headroom matters.

Design & Build

The Microdot connector provides a secure, compact interface with standard AKG wireless packs and adapters, minimizing cable bulk and tangling on stage or in the house. Its sweat-resistant design and wide operating temperature range (–20°C to +60°C) make it road-ready and reliable in diverse climates and demanding conditions without performance degradation.

Key Features

Back-electret condenser type
Cardioid polar pattern for directional pickup
Sensitivity: 20 mV/Pa (9V/18 kOhmes)
Frequency response: 100–15,000 Hz (±3 dB)
Electrical impedance: 200 Ohms
Recommended load impedance: 2,000 Ohms
Equivalent noise level: 34 dBA
Signal-to-noise ratio: 60 dBA (1 Pa)
Maximum SPL: 135 dB (1% THD)
Operating temperature range: –20°C to +60°C (14°F–140°F)
Microdot connector
Includes MDA1 adapter, windscreen, and carrying case

The HC644 MD combines proven AKG engineering with practical accessories and robust specifications for dependable lavalier performance in professional audio applications.

Condition	New
Country of Manufacture	Hungary
Connection	Wireless