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API 512c 500 Series Microphone Preamp Reviews

500 Series Microphone Preamplifier

With the API 512c, you've got the chance to own API's legendary front-end sound — at an unbelievably incredible value. Fitting into API's 500-series modular chassis, the API 512c has nothing but legendary heritage. This microphone preamplifier evolved from the original 1967-era 512 — API's first-ever modular mic pre — and it's brimming with that classic's same sonic character. All in all, you get an API console-level microphone preamplifier in a design that's totally expandable and realistically portable. If you're looking for classic preamp character, then you've found it: the API 512c.

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Highest Rated Reviews

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Clean

By Christian Vargas on October 19, 2022 Music Background: Musician and Producer

Very clean and bright, perfect for snare drum, bass and guitars.

Simply the best

By Sweetwater Customer on November 27, 2021 Music Background: Artist

The 512 is the absolute the the best preamp module ever..And believe me I've used them all..but I had a pair of them and I don't remember ever equeing the vocal tracks or anything else I sang into them..they are as clear as light..they sound like you're in the room..but full and present...I am a total believer in API now..I've recorded in London and New York..on Neves and SSL but when I used the API desk with the 512 pres

I was hooked..spend the money..you'll never regret it..dave

The Classic, Must have Mic Pre

By Pier Giacalone from Doylestown, PA on November 12, 2014 Music Background: Producer, Engineer, Musician, Studio Owner

I've been waiting for years to own API Mic Pres. They have not disappointed. If you're reading this review then perhaps you're not familiar with them? They are the king of midrange. Not particularly warm on the bottom, not particularly open on the top, but for mids, this is it. No big stamp on the sound like Neves. Just smooth, punchy midrange. Guitars and drums and rock vocals.

Legendary drum sound.

By James D from Los Angeles, CA on August 14, 2014 Music Background: Recording Engineer, Live Sound Engineer, Gear Collector

If cash is no object THESE ARE WHAT YOU WANT TO USE ON DRUMS. Get as many as you can. API has it down. Your snares and kick will sound clearer and punchier than you could ever want. Your toms will sound thunderous. Makes mixing so much easier as the sound straight from the pre is excellent. Works good on vocals and guitar too but I find it has sort of a harsh/bright sound on vocals. That's just my opinion though as you will find plenty of people who love it and I'm sure it varies singer to singer.

Pair these with a couple 550s, 560s, and/or 527s and it will be game over.

Classic

By Eraserfish on November 14, 2013 Music Background: Singer songwriter/ Frontman

Absolutely classic. I'd been hearing this talk about the API "sound". Now I know what it is. I use this and the API 550b eq together and I am seriously amazed at what it's doing to vocals and acoustic guitar. I sat around for hours with just a single condenser mic playing guitar and singing songs with my headphones on just unable to believe that a preamp and eq could make me sound so darn good. I'm not a big studio guy, just a musician who records at home, and I'm telling you home recorders that you have to spend some money once in awhile to sound pro. The end justifies the means on this one and the 550b as well. Amazing difference even on cheaper mics like sm57/58 which need some push anyway. 10,000 times better than the preamps on your interface, but this preamp has character instead of just crystal clear gain. Mojo!

Lives Up To the Hype

By Mark Bolton from Florence, MS on August 18, 2013 Music Background: Home Recording, Student, Hobbyist, Recording Engineer

Really, I'm putting this more at about 4.89. I'll explain, here.
This was my first external preamp, after having had used my Focusrite Saffire Pro 40 pres for a year or so. So, I bought this with an API Lunchbox and had no problem with the fitting and sound (some people seem to with some brands).
My first test was drums. I set up one mono room mic; I played the same piece twice — once through this and once through the Saffire pre. The difference even was distinctly audible through laptop speakers. It had a bit more high-end clarity, a little better lows, and overall was a bit more defined. Could I EQ to get to this sound? Maybe, but I couldn't get it exactly there, as it's a little more than just that.
I bought it mainly for male vocals, and I've got it paired with my Neumann TLM 102. It works great with that, and it brings out a tad of midrange that I never can EQ in just right. Paired with an API 550a, if EQ is needed, you'll have a great chain.
And for the bad: the output on this is EXTREMELY high. I love this on snare — very punchy and delightful, but even at the lowest gain stage, it's clipping. You have to either pad externally or internally. If you pad internally, that's, supposedly, getting rid of some "mojo," so pick your poison. They could have added output attenuation and a high-pass filter.
I'd recommend this preamp to anyone who is looking for a new addition or first, high quality preamp.

So Hot

By Eric M from New York, NY USA on August 2, 2012 Music Background: Recording Engineer, Songwriter, Singer

So HOT. And I mean that in a GOOD way. I track male rock vocals at home in my apartment. Here the signal chain: SM7b dynamic mic, mogami xlr-to-xlr cable, API 512c mic pre, mogami xlr female to balanced 1/4" male, into line input on Avid MBox (input switched pulled for -20dB). This works very well, and I want to write this review to recommend it. While the other gear in this chain is all very good, the API pre is outstanding. I can simply make slight changes to the input gain switch on the API to get solid level into Pro Tools. The sound? Don't get me started... Warm. Crisp. Good level. Love it on male rock vocals!

Love

By Lance Miller on May 23, 2012

Yes, I am in love with an inanimate object. Sigh.

Awesome Pre!!

By Chris from Florida on May 14, 2012 Music Background: Engineer, producer

I absolutely love all of my API pres. I use these on all of my drum tracks. I really like the sound of acoustic guitars miked with a KM184 or U67 running through this Pre. Bass guitars sound good too! This is a do it all Pre. And it being a 500 series Pre makes it even better! If you want this Pre just go ahead and get 2. Because you will want a second one.

Best 500 series Mic Pre in its class

By RCM from Earth on April 20, 2012 Music Background: 20 + years recording, musician, wanna be music producer

The API 512c has incredible amounts of gain sounds more transparent than other mic pre's built very well. I tried my R84 Ribbon Microphones with two API's vs. two RPQ 500's I was actually more impressed with the API's. I suspect two or one condenser microphone would knock my socks off but if a ribbon mic can sound wonderful with this item then it would only be even better if you used a dynamic or condenser microphone.
If you want a really good yet inexpensive mic pre for your lunchbox, then by all means don't look anywhere else.

Solid Pre!

By Will from Nashville, TN on July 26, 2011 Music Background: Engineer

I recently purchased the 512c for my lunchbox and there is no mystery as to why they are so loved amongst engineers. I have used it on Snares, Guitars, and even Vocals. It is fast, clean, wide open and huge. It is one of the hotter preamps I own but is in no way a flaw. It would be nice to have some type of filter/eq... but I am not gonna knock it just because of that as eq is not needed on most things going through this bad boy. I look forward to grabbing a couple more of these (at least)!

Hot Shot

By MICK from CHICAGO on January 16, 2022 Music Background: MAN I MAKE STUFF

Hot preamp. Gets that crispy vocal sound I've been looking for. Yet to test on a kick or a snare, but ya boy 2x on the 512c train. I've got them both teamed up with some RNC 500s for a killer stereo pair for tracking channels.

API 512c

By Harold from Robertsdale, Al. on December 15, 2018

When I first got mine it was a huge difference from my other pres! I love it on everything, especially kick. The DI is awesome for bass and keys also. One word of caution, these units have high output. If I could change anything, I would prefer a -10 db pad instead of the 20 db pad. If you"ve never tried a real api pre, you"re gonna love this thing!

Classic pre with A LOT of tone

By Roark from Atlanta, GA on April 22, 2013 Music Background: Professional Recording Engineer, Producer, Guitarist

I really love the way this preamp sounds. It's punchy and aggressive, and sounds great on male rap or rock vocals. I've used it with electric and acoustic guitar as well, and it sounds great on that too.

This preamp runs HOT. I read about it in other reviews but had to experience it for myself. Not necessarily a bad thing, but I actually keep the pad switch on for all but the quietest sources. Once the VU meter starts reading yellow you will hear a lot of tone added from the pre, which may or may not be what you want to hear in a particular situation. Because of that, I would encourage folks to use this with a transparent compressor, and to keep a smoother preamp as a backup for session that don't need agressive sounding tone (A vintech or an avalon would be a good backup if you want smoother tone).

Overall I am really pleased with the sound and quality of this preamp. Sturdy build, classic API aesthetics, and agressive tone make this a well-rounded package.

MUCH BETTER THAN I THOUGHT

By Ryan Mowdy from OKC, OK on April 3, 2012 Music Background: Recording Artist, Music Producer (in training), Performer

I had a chance to check out this Mic Pre and first off I've tried about every mic pre in existence so I have a pretty good feel for what most of them are all about. Anyhow I suspected that the Gain on this Mic Pre wouldn't be too hot definately not for ribbon mic's, however using it mic'ing my 2x12 cab the dial on the mic pre although small packs a big punch. My waveforms were a really good size not too big not too small. Everything sounded right. As a matter of fact, I am selling my Great River MP-2NV Mic Pre and getting two of these API mic pre's. and besides how could you go wrong with API?

Great Pre....

By novi effendi from philadelphia on March 22, 2011 Music Background: engineer

After 2 hours play around with this, suddenly I found my kick sound was BIGGER!! Snare was punchy,and guitar just rock!!!
The only thing,,this is very hot pre,,,easily clipped my SM57,,,but after I tweaked it,,,it was just great..I Have two btw,,,enough explained???

My favorite aggressive pre.

By Rowdy from Seattle, WA on November 5, 2009 Music Background: live/studio engineer.

I admit, I've been lusting after a few of these for awhile, and after spending many sessions with them at a studio, I found that it definitely had its place. I ended up only using it sources that worked well with how driven it can sound at the input. On sessions where I needed a clean RnB vocal, I found that coupled with several different mics, it still wasn't as clean as other pres, even the 6176. Even my musicians could hear the drive on the upper frequencies through their headphones! On the other hand, it is incredible for rock music, especially with a vocalist that needs to have that edge! Snare, bass, and electric guitar are also favorites.

The old standby

By John D from CT on February 17, 2014

These are great Pre's. Very hot a forward-sounding. Not great for everything in my opinion, but excellent on percussive sources and the usability seemingly expands in more aggressive styles of music. Very functional, never been my favorite pre, but since I got a pair neither have left my rack either, while many others have come ans gone!

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