The AT4033a is Audio-Technica's professional large-diaphragm cardioid condenser — a mic that has earned consistent respect in studio settings for its clean, detailed sound with a refined presence peak that adds clarity without harshness. The transformerless design keeps the noise floor low and transient response fast, and the internally shock-mounted capsule reduces handling and mechanical noise. A switchable 10dB pad handles loud sources without clipping, and a switchable 80Hz high-pass filter manages low-end rumble and proximity effect. The AT4033a is a genuinely versatile studio workhorse — equally at home on lead vocals, acoustic instruments, piano, and overhead applications. A well-regarded mic that punches above its price point and has remained a reliable choice for working engineers for decades.
This unit is in very good condition and fully functional throughout.
- Make: Audio-Technica
- Model: AT4033a
- Type: large-diaphragm cardioid condenser microphone
- Capsule: single large-diaphragm externally polarized condenser
- Polar pattern: cardioid
- Frequency response: 20Hz - 20kHz
- Sensitivity: -37dB (14.1mV) re 1V at 1 Pa
- Equivalent noise: 17dB SPL (A-weighted)
- Signal-to-noise ratio: 77dB (1kHz at 1 Pa)
- Dynamic range: 124dB
- Maximum SPL: 145dB (with pad)
- Pad: switchable -10dB
- High-pass filter: switchable 80Hz, 12dB/octave
- Output impedance: 100 ohms
- Connector: XLR 3-pin, gold-plated
- Power: 48V phantom
- Design: transformerless, internally shock-mounted capsule
- Modifications: none
- Includes: shock mount, soft protective pouch
Ships carefully packed and insured for full value.
International buyers are welcome — please contact us for a shipping quote before purchasing.
About Mill River Music
Mill River Music is an independent, human-powered music shop located in downtown Northampton, MA, run by a team of players, enthusiasts, and certified repair technicians. Every piece of used gear we sell is personally inspected, tested, and set up before it ships — we don't list it until we'd be happy to play it ourselves.
As Martin and Taylor certified techs, we hold our guitar work to a high standard, and we're committed to full transparency about the condition of everything we sell. No surprises.
When you buy from Mill River, you're supporting an independent local business that genuinely cares — about gear, about players, and about doing things right. We're here every step of the way. Reach out anytime.
