Audio Technica AT4081 (Bidirectional Active Ribbon Microphone)

The AT4081 is a side-address active ribbon microphone with a bidirectional polar pattern. Delivering the warmth and natural sound of a classic ribbon microphone, the AT4081offers a robust build for long-lasting performance and high gain for easy use with microphone preamplifiers.

With 18 patents pending, Audio-Technica’s innovative ribbon transducer advances the evolution of ribbon microphone technology, combining remarkable durability and high-SPL capability with smooth, rich audio quality. The microphone is recommended for horns, strings, acoustic instruments, drum overheads, orchestras, ensembles and guitar cabinets. It excels in recording studios as well as in live-sound settings.

A significant breakthrough in ribbon cartridge design, Audio-Technica’s patent-pending MicroLinear™ ribbon imprint minimizes ribbon distortion for durable performance and accurate reproduction of the sound source.

While the application of phantom power was prohibited for oldschool ribbon microphones, Audio-Technica’s AT4081 requires 48V phantom power for operation. The phantom power is used—not for the microphone’s dynamic ribbon transducer—but for its active electronics, which bring its output to near condenser microphone level. This highoutput
and stable impedance make the microphone easy to integrate with microphone preamplifiers.

The bidirectional polar pattern of the microphone makes it equally sensitive to sounds originating in front and back of the element.

AT4081 屬於側錄型（side-address）的有源式鋁帶咪高峰，具有雙向指向性收音設計。 AT4081能產生典型鋁帶咪高峰的溫潤自然音色，且結構堅固耐用，能長時間保持效能並提供高增益效果，亦方便搭配咪高峰前級擴大機使用。

18項專利申請中的 Audio-Technica 創新鋁帶收音頭，引領鋁帶咪高峰技術的全新革命，不僅能提供優異的耐久度及高SPL能力，更兼具平順而豐富的音色品質。 此咪高峰建議用於錄製管樂器、弦樂器、原音樂器、鼓、管弦樂團、合奏樂團以及吉他揚聲器。 除錄音室外，亦可於現場表演場地中發揮優異的收音性能。

Audio-Technica 專利申請中的MicroLinear™鋁帶壓紋是鋁帶匣設計的一大突破，可徹底減少鋁帶扭曲的問題，提供耐久可靠的性能表現，並精準重現音源。

Audio-Technica AT4081搭載傳統鋁帶咪高峰所無法採用的幻象電源，並使用48V進行操作。 幻象電源運用於咪高峰的有源式電子元件而非動態的鋁帶收音頭上，以達到可比擬電容式咪高峰的輸出效果。 高輸出及穩定阻抗的特性，使咪高峰可輕鬆地與咪高峰前級擴大機完美整合。

咪高峰的雙向指向性設計，無論聲音來自元件前方或後方，皆可達到同等的靈敏度。