Audio Technica T897 (Line + Gradient Conderser Microphone)

The AT897 requires 11V to 52V DC phantom power or a 1.5V AA battery for operation. A battery need not be in place for phantom power operation.

Output from the microphone’s XLRM-type connector is low impedance (Lo-Z) balanced. The signal appears across Pins 2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot” – positive acoustic pressure produces positive voltage at Pin 2.

An integral 80 Hz high-pass filter provides easy switching from a flat frequency response to a low-end roll-off. The roll-off position reduces the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations.

The microphone is RoHS compliant–free from all substances specified in the EU directive on hazardous substances.

AT897咪高峰需使用11V至52V幻象供電或1.5V AA電池工作，當使用幻象電源時，可以不安裝電池。

咪高峰的XLRM卡農輸出端為低阻抗平衡輸出，咪高峰音頻信號最終以卡農公頭的2號及3號針腳輸出，而1號針腳則為地線(遮罩)連接。輸出相位將以正相位電平設於2號針腳上。

內置高通濾波電路，可輕易由平直的頻率響應，開啟為於80Hz以下衰減的收音效果，應用高通濾波器可減低收音環境中低頻雜訊(如外間汔車引擎聲，空調系統的風聲等)，房間中的回聲及機械性的震動聲。

咪高峰符合RoHS規格，在構造上不含有歐盟禁用的危害性物質。