Back in 2017, I wrote about the Sennheiser MD421’s “mic clip from hell”, the stock clip with a hair-trigger release button that turns a perfectly good tom mic into a guided missile the moment a fat finger brushes it. My fix was about a penny’s worth of zip tie. Sennheiser’s fix, it turns out, was a whole new microphone.
Meet the MD 421 Kompakt
In October 2024, Sennheiser released the MD 421 Kompakt, a shrunken-down cousin of the MD 421-II. Yes, that news is about two years old. We’re a recording studio, not a newsroom.
The headline feature, at least around here, is the clip. Sennheiser redesigned it from scratch and made it part of the microphone housing, so there’s nothing to slide off a rail and no release button waiting to be bumped. There’s also an optional MZH drum clamp that screws into that built-in clip and hangs the mic right off the rim of a drum.
Best of all, Sennheiser more or less admitted what every engineer already knew. Jimmy Landry, the company’s Category Marketing Manager for MI, put it plainly in the launch announcement:
“The clip is the one thing that users have always criticised.”
– Jimmy Landry, Sennheiser
Criticised. With an S. I’ll take it.
Smaller, Lighter, Same Guts
The Kompakt is a lot smaller than the full-size mic: 122 mm long, versus 215 mm for the MD 421-II, and Sennheiser lists it at 159 grams, less than half the weight of its big brother. To get it that small, Sennheiser dropped the bass roll-off switch, reasoning that consoles and DAWs took over that job a long time ago. It keeps the large-diaphragm dynamic capsule and the same 30 Hz to 17 kHz frequency response.
Sennheiser says it sounds the same as the big one. Sound On Sound’s reviewer agreed, calling it “indistinguishable” from his original 421s on toms. (He also admitted that both of his 421s have electrical tape permanently holding them to their clips. I feel seen.) He summed up the whole thing in four words I wish I’d written: “they fixed the clip!”
At launch, Sennheiser priced the Kompakt at $279 (MSRP) for the mic by itself and $299 for the drum version with the MZH clamp. Street prices have moved around since then, so check your favorite dealer.
Don’t Throw Out the Zip Ties
Here’s the catch. The Kompakt is a new mic, not a fix for the one already in your mic locker. The full-size MD 421-II is still in Sennheiser’s lineup, and its current quick guide still shows it shipping with the same MZA 421 slide-on clip, trigger-happy release button and all.
The Kompakt is a new mic, not a fix for the one already in your mic locker.
So if you’ve got 421-IIs hanging over your toms, the zip-tie fix for the MD421’s release button still applies.
We haven’t gotten our hands on a Kompakt yet, so I can’t tell you how it behaves over our toms. But a 421 that actually stays where you put it? Sixty-six years after the original showed up in 1960, I’d say that’s worth a look.