API® Summing
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Get the punchy sound of API console summing — exclusively for LUNA.
The sound behind five decades of landmark albums, API consoles are legend for good reason. From Stevie Wonder's Talking Book and Fleetwood Mac's Rumours, to The Cure's Pornography and Radiohead's Hail to the Thief — the mid‑forward punch of API's classic analog consoles breathe aggressive, multi‑dimensional color into your mixes.
Developed in partnership with API, exclusively for LUNA Recording System, the API Summing Extension emulates the 2520 op‑amp and custom output transformer-based summing amps found in legendary API consoles over the past 50 years — giving your LUNA mixes all the attitude and tone of API's esteemed analog desks.Easily add power, clarity, and mid-forward punch to your mixes with the first authentic emulation of API analog summing
Use per-bus Headroom and Trim controls for subtle tone sculpting over your entire mix.
Harness the complex nonlinearities and musical clipping that define the API sound
Sum individual channels or your entire mix through API's hallowed bus or master summing modules
Genuine API Summing for your Mixes
Taking you beyond any summing plug‑in, the API Summing Extension is built into LUNA's mixer, capturing the sonic detail of API's iconic bus channels. This workflow eliminates the need to manage multiple plug‑in windows. Simply push up faders and use the per‑bus Headroom control to add character and dynamic enhancement.
Why API Summing?
When audio sources flow through an API console — specifically the 2520 op‑amp and custom output transformer — random analog nonlinearities work together, producing complex, musical harmonics and transient clipping. These summed signals add punch, depth, and character for a mid‑forward, lively mix.
Getting it Right
UA dissected and studied multiple API consoles — pouring over original service manuals and gaining crucial insight into their discrete Class A operation and hybrid voltage/current summing circuitry — in contrast to the Neve 80 series pure current summing. UA's team of engineers throughly emulated all of the nonlinearities and clipping characteristics, plus API console fader taper and pan law, giving you the same chart‑topping results as API's flagship consoles.
“The API Summing Extension for LUNA really brings your mix forward, giving you that tight and punchy bottom end that we’re all looking for.”
– Jeff Balding (Taylor Swift, The Eagles, Dan+Shay)Customer Reviews
T. Laja
September 19, 2022
API Quality
I used in fx and mix channels. Very good and easy .
Read MoreM. Verblakt
July 8, 2022
Stunning
I loved the Neve summing option in LUNA. That's the reason why I obtained the API summing too. This creates the all American console sound. Love it!
Read MoreW. Krol
June 5, 2022
API sound
Open wide sounding API summing - and working natively, Great job
Read MoreA. Lopes dos Santos
February 2, 2022
Game Changing System
The combination of the Summing and Tape Extensions inside Luna represent a game changing solution, I believe. The effect this system has on the final result of my mixes is simply amazing....
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Features
The first authentic emulation of API analog summing
Adds power, clarity, and mid-forward punch to your mixes
Per-bus Headroom and Trim controls for professional tone sculpting over your entire mix
Sum individual channels or your entire mix through API's hallowed bus or master summing modules
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Customer Reviews
API Summing
T. Laja
API Quality
I used in fx and mix channels. Very good and easy .
J. Lowman
only for people new to DAW.
i'm not about to switch daws for a summing plugin. although i'm not even sure if it would even integrate as easily as it does with luna. COLLAB WITH APPLE FOR A LOGIC PRO X summing SLOT PLEASEEEEEEEE!!!
M. Verblakt
Stunning
I loved the Neve summing option in LUNA. That's the reason why I obtained the API summing too. This creates the all American console sound. Love it!
W. Krol
API sound
Open wide sounding API summing - and working natively, Great job
P. REVERT
Why ?
Why it's not avalaible for all DAWs users, not only LUNA ? Such a shame guys.
A. Lopes dos Santos
Game Changing System
The combination of the Summing and Tape Extensions inside Luna represent a game changing solution, I believe. The effect this system has on the final result of my mixes is simply amazing.
If I had the chance to have jsut one of the now available summing options, I’d take the API, which is less “colored” than the Neve - that might work wonders on some recordings, of course. The API has the typical “bite” we all associate with their products, but also provides lots of clarity and, to my taste, has a gorgoeus effect on the low end frequencies of the mix.
I’ve never heard/felt that “velvety” low end on my mixes, before using this combo (API Summing and ATR-102 Tape), inside Luna.
I work exclusively ITB and this setup has just made me yet more confident that, today, it’s absolutely possible to remain ITB, from start to finish of my work, with no regrets. Congrats, folks!E. Souza
Totally Wow
Excellent, I love it
J. KIM
wow
wow!!!!
U. Khan
Excellent aggressive, mid-forward sound great on drums and guitar
This is a welcome addition to LUNA summing. This is a very nice, aggressive sounding emulation of the 2520 op-amp. This really shines on guitars and drums. Don't be afraid to drive it. Sounds great in a mix.
P. Jonsson
LOVE IT
LOVE THE SOUND OF API SUMMING
A. Thomas
Subtle big-board magic on native processor power.
I agree with the other reviews. In short, it makes any in the box mix feel better and more cohesive.
Technically, I love the balance of simplicity and control they’ve implemented with this system and the tape extensions.
I had purchased Studio One 3 a few years ago for its summing emulation. The control and implementation of the UA summing feels easier and faster to work with, though I’m guessing you could get similar results with both.
Sonically, depending on how developed your ear is, you might not “hear” much of a difference on one track, but put this on all your busses including master bus, play with “headroom” a bit on each track to taste, then toggle the whole thing off and on like they do in the videos. Listen as much with your feelings (“Reach out with your feelings, Luke”) as your ears; you’ll notice the difference. It’s a subtlety that makes one of the differences between a good mix and a great mix.
Between this and the Neve summing, for my tastes I would take the API if I could only have one, but fortunately you don’t have to spend $100,000 to buy a console anymore to have that luxury.
I have found that for some songs I’ll mix and match a Neve summing buss for certain elements and API for others because of the difference in vibe. Well done and well implemented, UA!
One note of joy and caution: extensions (shape, ravel, summing, tape extensions) run on your computer’s CPU. This means that you don’t lose an ounce of UAD DSP to run this! BUT you will use an amount of your native processing power. I’ve found that as of Luna 1.13, I can only run my render/native CPU at around 40-50% and have things stay stable. That’s on a 2012 MBP i7 with SSD. That however is enough to run all the extensions I need for most mixes on my system. On occasion I need to give up an extension on a less integral bus such as low volume harmonies or percussion parts, but generally it’s fine.S. Shaw
Clear and vivid!
I'm surprised there hasn't been a review yet. Think it somewhat like the API Vision channel strip. It's not as colored as the Neve summing, but gives extra bit of clarity and definition that really helps shape a mix (or even make a demo!) Love it on acoustic materials.
A great bundle sale in the Analog Essentials bundle. Thanks UA!R. Souza
Subtle but awesome!
I found the API more subtle than Neve, but with more strength and I liked the bass more. Less colorful than Neve. The treble is also more detailed and I really liked the details and the way the transients have more punch. I took advantage of the year-end sale and bought the API equalizers, which together with the Vision channel strip and the 2500 compressor are doing a good job of emulating a perfect analog chain for my favorite style, which is rock. This thing can help for a solid and punchy mix for sure.
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