Heiserman Audio Type-21 Microphone — Classic 251 Vibe, Modern Session Muscle

Heiserman Audio Type-21 Microphone — Classic 251 Vibe, Modern Session Muscle! The Heiserman Audio Type-21 Microphone captures the heart and soul of the legendary ELA M 251E in a compact, ultra-versatile format—delivering the depth, detail, and character Heiserman is known for in a rugged, phantom-powered design built for everyday studio life.

At the center of the Type-21 is Heiserman’s Generation 5 HK12 capsule (the same capsule found in the acclaimed H251), hand-crafted in the USA for consistency, nuance, and musicality. A unique transformerless, low-noise JFET circuit with precision components keeps the sound rich and dimensional while staying clear and present—especially helpful when you want that “finished” vocal or room tone without fighting EQ later. Built for modern sessions, the Type-21 includes switchable polar patterns (cardioid/omni/figure-8) plus a 160 Hz high-pass filter and -15 dB pad, so you can quickly dial it in on vocals, drum rooms, guitar cabs, and tight spaces where a big-bodied 251-inspired sound is needed without the bulk.

As an authorized Heiserman Audio dealer, Front End Audio is excited to offer the new Heiserman Audio Type-21 Microphone to our customers! If you have any questions about the Type-21, give us a call at 888-228-4530. Our team is always here to help you find the right gear for your studio and to support you every step of the way - from purchase to setup and beyond.