Shure first introduced its KSM line of studio condenser mics in 1998 with the showing of the KSM32 at the AES show; this was quite a departure from what was the company’s bread and butter for multiple decades – the SM57/58 (and the later Beta variants) were arguably the most common microphones in live use around the world, but also certainly fixtures in nearly every recording studio. The cardioid KSM32 was followed by the multi-pattern KSM44, and while designed to be studio tools both quickly found favor with FOH (front of house) engineers and became staples on guitar amps and drum overheads on countless tours, showing that people are going to find all the uses for a microphone no matter a company’s preferred designation. It’s also a testament to Shure’s ability to design microphones that don’t neatly fit into a single box or application and truly are universal tools.
Now, 28 years since the KSM introduction, Shure have entirely revamped the LDC (large diaphragm condenser) models for 2026 with the new KSM32C, KSM40C, and KSM44MP. Where the original LDC KSM mics had a unique, oval profile to the body and grille with a satin champagne finish, the current iterations have quite narrow, round bodies and grilles that are not much wider than the capsules. They are finished in a sleek, matte black and the grille has a fine inner mesh with large holes on the outside circumference of the upper half of the body. Because the outer layer of the grille is on the body material, it is quite thick and affords some serious stability and protection of the capsule.
The new models are quite different from each other but also contain impressive updates on the originals from which their names are derived. In the KSM32C, improvements were made to the circuitry to lower the self-noise, with KSM44MP having the lowest (around 5 dB). The capsules on all models are gold-sputtered Mylar; on the 32C, the diaphragm is 3/4-inch, but embossed with tiny dimples giving greater surface area, lowering the resonant frequency of the diaphragm to achieve more robust and extended low end. The KSM32C capsule is a permanently polarized electret element, whereas the 1-inch capsules on 40C/44MP are true, externally-biased condensers. The 32C and 40C are both fixed cardioid, while the 44MP can be switched from cardioid to omni or figure-8. All three mics have switches for a -15 dB pad and a filter offering flat, an 18 dB per octave filter at 80 Hz, or a gentle 6 dB per octave roll-off at 115 Hz – a very flexible filter range and not typical of many LDC mics. I do wish the legending on the body was a lighter grey or even white as my aging eyes have a hard time seeing what the switches are set to in a less-than-bright studio lighting situation. That said, the switches are metal and provide a very satisfying click into their settings.
The 40C and 44MP are offered in a single variant, which includes a zippered case and a magnetic pop filter that fits to the impressively sturdy shock mount. The 32C is available as the Stage Kit “HM” version which includes the case and a premium flocked windscreen, but only a hard mount which threads at the base of the of the mic and then to a stand. The Studio Kit “SM” has the shock mount and pop filter of the 40C/44MPincluded at added cost.
Enough with all the tech specs – how do they sound? I’ll cut to the chase and report that these are damn fine sounding microphones. I have a pair of 32C and a single 40C in my studio that I have put through the extremes at both ends of the dynamic and frequency spectrums. My first test of the 32C were as drum overheads; this always tells me a lot about a mic when trying to capture the air and articulation from cymbals without them presenting as harsh, but also the body of the cymbals along with that of the snare and toms. Running them flat with the -15 dB pad engaged on the mics through Neve 4081 preamps gave me exactly the presentation of my drum kit as I hoped for – incredible detail on the cymbals from the lightest hits on bells and splashes, to the full depth and spread of crashes, Chinas, and rides hit with force. Something I find myself doing a lot is reaching for oeksound’s Soothe2 when I’m sent poorly-recorded overheads to mix to help tame the pokey upper-mids and harmonics that make me cringe; these mics never made me even consider this. They have a smoothness in the 3 to 7 kHz range where recorded cymbals can sometimes dominate and interfere with vocals and the upper end of guitars. The toms on my kit came through with plenty of attack but also size; I have floor toms on both the left and right sides of my kit, so I get low frequencies spread across the panorama rather than bunched up on one side as is typical of many kits. The 32C delivered this perspective perfectly and the recording of the overheads needed very little in the way of EQ or compression to sit in a dense rock mix. I then moved them out in front of the kit about three meters and tried them as close room mics, in both X/Y as well as spaced a few feet from each other. Again, they performed more than admirably and the more distant perspective of the kit was captured effortlessly and naturally.
I then tried them on an acoustic guitar recording, again in X/Y, about 18 inches in front of the guitar. They went through a pair of Neve 1073OPX preamps and sounded sublime with nothing other than the 80 Hz filter on the preamps engaged; then I just touched them with a hint of 2:1 compression from my pair of Empirical Labs Distressors and got one of my favorite acoustic guitar recordings ever. Jeremy King, the composer and performer for this example, had wanted to add an acoustic guitar part to just one of the ten songs we are in the middle of wrapping up, and he was completely blown away by what he heard, both in the headphones while tracking and then through my monitors on playback.
Continuing the torture test with the KSM32C, I invited my good friend and client, harpist Jessica Gallo, to bring one of her folk harps to my studio to test out the low-noise spec of the mics. The folk harp, as well as her giant, concert pedal harp, are incredibly quiet instruments, particularly given their physical size. Over the years of recording Jessica, I’ve continually searched for mics and preamps that add as little self-noise as possible when using so much gain to get the harp to a useable level; the 32C have taken that crown! I was able to run my 1073OPX preamps 10 to 12 dB lower than any other mics I have used on the harp for the same output level – these mics delivered a precise, natural sound of the harp, with no weird proximity resonances or harshness from the shorter high strings.
Since I was in the less-common-acoustic-instrument mode, I also used the 32Cs as a pair of far mics while tracking Scottish border pipes and small pipes for sets of multisamples to be used by piper, Cameron St. Louis, when using his Bluetooth-equipped wind controller in live performance. In this position, they sounded exactly like the pipes in the room with the ideal balance between the drones and chanter. As I also wanted to have a centered, closer perspective on the pipes, I used the KSM40C about one meter in front of Cameron, also through a 1073OPX channel and a touch of my Hairball Audio Revision D compressor. I had the pad on the mic engaged, as pipes can be quite loud and the mic never buckled – it just reproduced the sound of the pipes to perfection.
This is also what I found when trying the 40C on Jessica’s vocals and also in front of a 2x12 speaker cabinet driven by a Bad Cat Amplifiers Hot Cat. On the vocal, I set the filter to the 6 dB/115 Hz setting just to take out a touch of possible mud; I multed the preamp out to the Revision D and also straight into the converters so I could compare the completely pure sound of the mic against how I would normally track a vocal with compression; both sounded like she was standing right in front of me, with the uncompressed version intensely real but the one with some squash on it sounding exactly as I’d want to hear it on a record. I tried a few passes of her vocals so I could have the mic directly in front of her mouth about eight inches away and utilized the included pop filter, and then also raised the mic and angled it down towards her mouth and removed the pop filter. The included filter certainly works, but not as well as my preferred double-filter consisting of a fabric pop filter in front of a metal one with angled holes – I hate me some pops and sibilance! Without the filter and with the mic raised to forehead height, the vocal sound was perfect. On the speaker cab, I had the mic just outside the edge of the dust cap on the cone about two inches back from the grille. I had the pad engaged but no filtering and the amp sounded enormous. I love using full-range condensers on amps in general and now have another favorite in that position.
What else can I say? These are really fantastic mics that I’m excited to continue using on as many different sources as possible. Shure have done a hell of a job updating this KSM series of mics, and I imagine they will be just as ubiquitous as their forebears.