DM1 Dynamite Ultra-Slim Inline Microphone Preamp for Ribbon & Dynamic Microphones - Mic Preamp with +28dB Gain for Clean, Natural Sound - Ideal for Podcasting & Live Sound (Red)

Briefly, I became aware of “HEIL” a few years ago having bought two Heil’s Air Transformer studio quality loudspeakers, whose sound is unparalleled. Therefor, as HEIL has been producing legendary loud speakers, let see if HEIL could also develop the opposite end of the audio channel, the Microphone. As a Faculty member of a 30,000+ student, State of Florida University, FAU, I rarely have time to write product reviews. My exception is for true Excellence, the valedictorian of products. Today, I produce daily, morning HDTV 90 minute pod-casts on a variety of technology topics, occasionally drifting to “Current Events.” In sum, HEIL PR-40B Microphone, is truly one of the best Cardioid Microphones available. Frequency response is pure and clean, particularly at the low-end of the audio spectrum. If you are looking for truly Deep, Clear Voiced Podcasting, with superior rejection of side & rear distractions, this may be a choice to consider. I have tested and own the best from EV, SHURE to SENNHEISER, where would you believe, HEIL clearly out-performs them all. If you deserve the Heil-PR40B (XLR fitted) microphone, you may likely be attaching it to a RODE Podcaster Pro-II or RODE’s new Podcaster-DUO, a mobile audio production sound-board, both offering phantom 48v power, coupled to SE Electronics DM1 in line 28db amplification, the subject of this review. Accordingly, SE-Electronics delivers their “in-line” DYNAMITE DM1 Class-A amplifier, for Dynamic Microphone in-line pre-amplification; the DM1 delivers truly “Lossless, Flat” preamplification of the entire 10-100,000 Hz audio spectrum, virtually eliminating line losses. Quality Dynamic microphones generally need an in-line 28db boost in signal amplitude, utilizing true Class-A amplifier technologies, this in-line signal boost, avoids over-pushing the RODE sound-board, keeping its attenuation in the mid-range of its capability, with long or short cable runs. Microphone Developers like Bob Heil, have a priority of delivering excellent sound reproduction for the entire listening range of the human Ear. Accordingly, Dynamic Microphones need a little help with signal attenuation; This is where SE-Electronics delivers their “in-line” DYNAMITE DM1 Class-A amplifier, fitting into the Audio Chain. We own four of these inline amplifiers for each of our 4 sound sources. 2/25/25 JimW.

Ton of clean gain. Sounds great, very durable, works well, easy, little pricey

A Shure WH20 can work directly with a Pyle XLR to USB (PDUSBPP10) adapter with one caveat: the build-in mic monitor will not work. This is because the monitor taps the mic input before the digitally (software) controlled preamp, and the signal from the WH20 is not enough to be heard via the monitor feature of the Pyle XLR to USB adapter. Without the Dynamite, the Pyle adapter needs to maximize the mic gain (0db) to get a decent recording. With the Dynamite, the digitally controlled preamp only needs to be at -34db to get a very clear input from the WH20. The monitor feature of the Pyle adapter works great. I can put the mic/computer balance right in the middle, and turn the headphone dial at about 8:30 (very low setting) and get a good balance between my own voice via the WH20 and whatever is coming from the computer. The Dynamite itself has no detectable noise or distortion. I am not an audiophile, just a practical person using this set up for Zoom meetings, recorded demonstrations and music listening. I did watch many videos that test and evaluate the Dynamite, I suggest that you do the same before reaching your own conclusion.

I bought this as an alterntiave to the Cloudlifter because it's more compact and less cost. I had gotten a different brand and it was noisy city. When I connected the dynamite as a straight swap to the CL, low volume and distortion. Hmm...clearly bad, right? Ordered a replacement. Same thing...Cloudlifter works, Dynamite don't. Curious, I changed mixers to my Zoom L8 and BOOM! Worked like a charm. It apparently doesn't care for the 48V being delivered by either my Peavy or Behringer mixers, but does like the Zoom. Most curious, yes. The Cloudlifter didn't care, worked with anything that provided Phantom. So just note that apparently not all mixers Phantom Power taste good to the Dynamite.

Received! I have the T.N.T. as well! The Dynamite is well worth it for podcasts, lives, or interviews!

Best investment to my mic setup!

The only negative to the D1 isn't really a negative as much as it's an observation. The D1 is long. The fact that you can put it anywhere in the line mitigates that factor though. As to performance, I'm running an ElectroVoice RE20 with it. In a word, perfect. There is no hum, nothing but pure sound from the mic. I also tried it with my Shure SM 7B. Same results, perfect. The D1 does require phantom power so be sure you understand that before buying. Any decent mixer will have phantom power though so it's not a big issue. I have a Behringer Xenyx 1204 USB. It's old, but it still works good for my podcast. I liked the D1 so much for the EV RE20 I bought another one for the Shure SM 7B. Note: Usually I wait awhile to review. I've had the D1 for a few weeks now and I think that's long enough to do a review without any buyer's glee.

This thing is amazing.

Best product

I’m using this with my RODE PodMic, and the difference was immediate. Before adding the SE Electronics DM1 Dynamite, I had to crank the gain way up on my audio interface (Focusrite Scarlett Solo), which introduced a lot of background noise. With the DM1 plugged in, I get clean, strong gain without having to push my interface too hard. This thing is tiny, super solid, and does exactly what it claims. It gives my dynamic mic the extra boost it needs without distorting the sound. Everything stays transparent and crisp, which is perfect for voice recording and podcasting. Also, it’s plug-and-play—just insert it between your mic and XLR cable, and you’re good to go. No knobs, no fuss. Just clean gain. If you’re using a mic like the PodMic, SM7B, or any other gain-hungry dynamic mic, this is a must-have tool in your setup. Highly recommend it.

Absoluter Must have wenn man ein SM7b hat klingt sehr sauber keine Störgeräusche oder ähnliches super Qualität

impressionante qualidade de som, gigantesca!

I bought this on recommendation from a friend. He did not lead me astray; it works EXACTLY as advertised. The noise floor is silent. I'm using with a SM57 & Yamaha MG10XU mixer. No more having to have everything on 10 to barely be heard during live streams. It gives the SM57 the exact bump it needs. Easy 5 stars. Get one, they are killer.