Neumann Summing Mixer  / Passive Summing mixer / Neumann summing amp

I should firstly like to say something in defence of my VM Mixer, Vintage Maker is my best choice for sound engineer wants a real analog summing with custom components. In my experience, Mostly of peoples aspect a sound "changing", "colouring", and other artefacts make their mix more Big, Huge and Powerful than digital summing process. Mostly of the peoples don't know what analog summing means. Let me explain the differences: Digital summing is a mathematical computer processing than loss all the phase characteristic added in analog summing world. That's the principal feature. Passive summing should be the best situation and the real feature we need in the digital world. Personally I hate summing mixers than change my original mix in the box. I work every day for TV and Movie soundtracks, albums, live set. VM is a piece of gear of my entire process. As explained, the main difference is the 3D spatial effect created with phase summing in analog world, and this difference is more evident with huge tracks summing of course. 8 tracks summed sound much better than digital summing, and certain software like Harrison Mix Bus makes a great virtual summing more than Protools, Cubase etc. 16 Tracks summed in analog are more wide than 8, and 24 tracks are incredibly wide and beautiful than only 8 summed. But.... in this process someone forget the tools between the gear. DA converters are an important part in this process. The DA conversion is very different than AD. Choose the best converters makes a huge difference in the analog summing. I've tested a lot of converters before my final choice Ferrofish, Creamwear, Beheringer with and without customs components, Apogee, etc. Ferrofish and VM seems to be my best "clean" choice. Another factor to consider is the Word Clock, and professional audio board than clock all the tracks and clock the DA, without WC synch these machines makes difference on the process too. And Last but not the least, the cables. Pro means pro, if you want use pro gears you have to choose pro cables. I've chooses Vovox cables connected from my DA to VM and viceversa from VM to my audio board (RME UFX) for the bounce recording, another more economic choice could be Cordial. That's make the differences, i've listened some one says analog summing does not make difference, bla bla. I've seen people love summing gears change the sound of their mix thinking to colour the mix. If your choice will be colour the mix, just test different summing box until you will find the right one for you, but please don't say this summing is better than this etc etc. Have no sense, even you choose a preamp for your gear, in the same question. Avalon is better than Neve and bla bla. I generally work in studio with Neve and SSL, with master sound Engineer like Gatica etc. When I want produce some in my personal home studio or simply Mix and Master with my gear.... Vintage Maker makes me happy because is transparent. When I want a touch of color, I pull up the Active section with Neumann 475-B. Remember 475B sound more clean than Lawo, Filteck and 475A, different pre different colours, Just consider that.... Analog summing makes huge differences especially in acoustic recordings, in other situations like Dance, and Electro you could choose the digital summing as best..... before speak about VM performances, just check your outboard gear before, cables, and DA..... I hope could be useful for the next analog summing users.


Neumann Summing Mixer 32x4/Insert/Return

Sjef van Leeuwen TCPX Recording

Neumann Summing Mixer 24x4/Insert/Return

Neumann Summing Mixer 24x4/Insert/Return/Active/Passive/Bypass/Stereo to Mono

Alkor Breakpitt, Vienna, Austria
djing,producing,sound design

Norbert Hofmann's 40 CH Neumann summing

Neumann Summing Mixer 36x2

Lawo Summing Mixer 14x4

Peter Carter UK

Lawo Summing Mixer 32x4

Neumann Summing Mixer 16x4 DB25 Ative/Passive option

Max Plisskin Los Angeles
Neumann Summing Mixer 32x4


Norbert Hofman, Germany
Alexis Mauri "Alexkid" Germany

Neumann Summing Mixer 24x4

Neumann Summing Mixer 40x4

Mus Abdi, UK, London

Michael Stallmeyer - Junior Studio, Germany

Lawo Summing Mixer 32x4

Neumann Summing Mixer 24x4/Insert/Return / Dual Passive Summing mixer

I bought a Neumann 24/4 several years ago and have since bought another four 8/2 channel passive summing mixers. Guess that tells you how happy I am with the units…
I, too, find that using OTB summing makes a subtle, yet remarkable difference, especially in regard to clarity of position in the stereo field (and mono is true mono).
I love being able to create sub mixes/stems using the smaller summing mixers and running them through a variety of preamps for colour (or non-colour).
My clients love it, too, and many returning customers ask/demand for the mix to be run through the analog summing mixer/s. I even have clients coming in because of this equipment (one particular client did his own research and came because of the VintageMaker brand; that job alone paid for the units several times over…). Just had an enquiry for 5 days mixing, running stems through analog summing...

An interesting blog, citing analog summing: http://www.rasxix.com/news.html

""I'm pretty intimate with my outboard gear and my setup allows me to utilize them efficiently to color a track in accordance to what it might need." Indeed so. The artistry of Niko Schauble of Pughouse and his collection of vintage outboard EQs, compressors and preamps was exactly what I needed. I figured since I had already put in this much work, Niko's warm boxes would be icing. The exported tracks from Singapore were imported into a ProTools station. Some of the reverbs were replaced with Sony Oxfords and Lexicon Native. Niko's suggestion of using Sound Toy's Echoboy turned out to be what some of my vocals needed for that slight touch of glimmer in the mix. The signal path went from the playback machine (ProTools) through an Apogee Symphony, into a Neumann Vintagemaker Summing Mixer and then out to a second system via an Apogee Duet (which essentially has the same converters as the Symphony) and was recaptured at 24 bit 96 kHz. This process was recommended by Joel and accommodated by Niko who actually went out and bought another Apogee module for my session! On the heavier tracks, we also ran through a pair of Neve 51 channel strips post summing mixer and the cleaner tracks were run through the Earthworks 1024. On the whole, I was pretty ecstatic about how the mixes turned out, punchy on the tracks that needed to be and shimmery on the cleaner acoustic ones. I have always been reticent to use descriptions like "wide" and "deep" but what can I say? The Vintagemaker made my mixes sound "wider" and "deeper" and dare I say, there was a certain "sweetness" that in-the-box mixing does not give you. So the colors available though analog summing did shine through in the end (although mine was more of a hybrid mixing process) and if you've spent substantial time and effort tweaking your mixes as I have, it might behoove you to visit a studio like Pughouse for what I'd like to call "post-processing" before your down mix."

You can read some testimonials on our website:  | Pughouse Studios |

Lastly, in regard to value for money and communication (Paul will discuss and build to your requests): I can't recommend VintageMaker highly enough! Niko
Dual Vacuum Tube summing mixer
Studio Valve Compressor
Matched Telefunken Valve
tube channel strip
Tube Drive Summing Mixer
Grace Design m101
PreSonus BlueTube
Solid State Logic Alpha VHD
DBX 286s
PreSonus DigiMax
Art Tube Opto
Herb Belofsky  Drummer · Austin, Texas

24x4 Passive Summing mixer Insert/Return/Bypass option 4xStereo to mono

I was considering the Rolls 16 ch passive summing mixer but on Ebay, I discovered Paul Taylor's Vintagemaker products. I emailed him to ask some questions and found his response to be positive and quick. I asked him to build me a 24 ch passive summing mixer with the insert feature and 8 chs of mono/stereo (switchable). He made and delivered the unit for $1076 and within 2 weeks (most of that shipping time was in customs in NY).
He sent pics via email and regular updates as the unit was made.
I plugged it into my studio, 1-24 Pro tools (Outs) and found the Neve 1272s to be the best sounding pre amps for the 2 buss on the mixes I was working on. the TubeTech MP1A also sounded great, the Focusrite was nice and the APIs were ok, too. My REVIEW: Clarity and Glue. It clearly sounds better than in the box summing, but you all knew that would be the case. It also sounds better than the AMEK console that I had been using for summing mixes. I had sold the console and this was one of the replacement parts. I am Very Happy. I would highly recommend Paul Taylor's custom built products. he was easy to deal with, great communication and ultimately a great sounding box that let me interface the preamps I already have as the 2 buss. A serious upgrade for a box that is reasonably priced for what it does. I would love to hear the other active summing mixers that he makes, but for now, I am a happy studio owner with the box he sent me. Thanks, Paul.
Mr. Lawrence Macdonald Hen / LOZ / UK

Neumann Summing Mixer  32x4/ Active/Passive /Insert/Return/Bypass/ Direct input select on CH16 /2xStereo to mono option

Got the unit through last night. Just wanted to say thanks again for answering all my questions and helping me make the right choice.
I think these units are excellent . Almost zero noise floor considering the amount of gain on the outputs.
I don't have a vast amount of gear but I do have a few choice pieces ( API , neve etc )
The output stage of your units are really impressive - they even make my API sound a bit gritty when pushed hard for 2  bus work . It's obviously great having the option of blending the two. I've been going through an upgrade of my setup lately but the summing mixer has been the biggest step toward the sound and setup I have been moving towards. Best of luck with the business .
Jon Parsons Fayetteville, North Carolina USA

LittleOne16x2 w 2xStereo to mono

"I got the LittleOne 16 last week and have it all hooked up.  First of all, great packing job and it didn't take long at all to come halfway around the world!  It took me a few hours to figure out all the internal patching changes in my DAW from ITB to OTB, but I just did get it right this morning and I am really knocked out by the difference.  Thanks for all your patience with my questions and the sage advice you gave as we emailed back and forth for 3-4 weeks leading up to my order.  FYI I'm summing 6 stereo pairs and 2 mono channels from Digital Performer through an RME UFX and Mytek 8x192ADDA, and using my Great River MP-2MH for makeup gain and a TK Audio BC1 stereo buss compressor.  You told me over and over that the passive summing benefit would be a better stereo image and a warm tone with my nice GR pre.  I actually wondered if it would be worth all the "trouble" and when I first heard it this morning I knew right away it was.  I've still got a lot to learn but am very excited and inspired to do just that!  I highly recommend your gear and just as highly recommend your great customer service.  Thanks again!  Jon Parsons"
API 2500
DBX 160
NEVE 2254
unit audio summing
SB2 mixer
Armin Mayer Grafikdesign Germany

Neumann v475-2B 32x4 /Ins/Ret- Act/Pass / 2xSTM

hi paul, your summing mixer is incredible good piece of hardware! the difference to the itb mix and also to mix summing through our console is amazing.
it is exactly the sound we were looking for.
the sound is more transparent fatter, more punch and the stereo image is wider.
it sounds professional!
we are really totally happy.
10000000 thanks
from lastdrivers
and best greetings
from armin
analogsumming germany
berlin mixer
audio germany mixer
inside summing mixer
lets see inside of summing
whats inside mixer
show me your studio gear inside
George Necola, Winterthur, Switzerland
Studio, Recording, Mixing, Mastering, Studio Equipment Distribution & Studio Tech Blog.



Incredible value for money.
I did shootout the vintagemaker with the Burl bomber, the dangerous 2 bus, the shadow hills equinox and ended up keeping the vintagemaker.
for the price, there is nothing better.

2U Standard Rack
Neumann v475-2C
40 input DB25 balanced
3xStereo OUT XLR balanced
Insert/Return on master by XLR balanced
Insert/Return on 4xStereo CH by 1xDB25 (1-8)
4xStereo to mono on CH1-CH4 = 8 mono by switch
Behringer Ultragain PRO
API 512c
Great River ME-1NV MP-500NV
Daking Mic Pre/EQ
Jensen transformer summing mixer
jensen xformer
Chandler TG2-500
Manley VoxBox
Moritz Bintig Hannover Deutschland
after some testing and comparing to the Shadow Hills and Rupert Neve, i´m happy to tell you that your summing amp is playing in the same league. The difference are not huge, but they are listenable, and i like what i´m hearing with yours. For me (and also a very good friend and mastering engineer) it´s even better in the sound then the others i´ve compared it to. I finally went with yours and i´m very happy with this decision.
So all in all, i´m so happy with this unit. I will sell my Neve and give back the Shadow Hills. Thanks so much. Moritz http://www.mb-musikproduktion.de/
TNT Recording Lab Tommy Dell Olio
I have just bought a forty channel neumann summing mixer from vintage maker and...it's amazing!!!! The difference from my old summing box (a vintage design Suj 1) is really huge!! The new mixer has much more punch and detail and everything sounds bigger and wider!! ..and, last but not least, the quality-price ratio is crazy:-))highly recommended:-))
Franck Amendola Neumann v475 Summing Mixer 32x4 with insert point stereo/mono /Active/Passive switch
i just received a vintage maker Neumann - V475 Summing Mixer / 32 in. The difference with the ITB mixes in protools is awesome...deep, warm, dynamic...i m really impressed by the quality .+1 More on:
Peter Carter UK. Lawo Summing Unit
Absolutely over the moon with my Lawo Summing mixer from Paul. This is the second unit I have bought from him. Fast shipping, great price and the unit itself does wonders to your mix. Highly recommended. /Tweakmusicmixing/
Dejan Radièeviæ producer/manager - Ljubljana-Slovenia - Lawo 32  with MS
Resolution and stereo image: first thing I've noticed was that mix is "glued together". I have a feeling of working with a tape, like the nasty transients are smoother, thus allowing for a warmer mix. It has a certain "velvety" feel to it. I also have the feeling that haufe transformers generate additional harmonics, that make the impression of excellent equal frequency distribution all over the spectrum. Mix is not dull or over exited, just plain great analog sounding. Stereo image is unbelivable. A huge step up from MiB (mix in a box). Bass frequencies are well balanced (from bottom mid all over to sub)
Headroom: it is obvious that there is more than enough headroom. I also have to discover how does the input overload sound like. So far I've been driving the signal through my RME DS converters, where I've selected the HIGH output (+10dbu) and still haven't been able to produce distortion (although, the higher input level might generate additional harmonics??). Output level rotary works great-no problem adjusting level to-tape.
more on: https://www.gearslutz.com/board/showpost.php?p=6698872&postcount=4
Fernando Rocha Numerica Studio Portugal
Just bought a 36 ch Summing Mixer Neumann v475 by Vintage Maker - Vintage Design djpaulmusic paul taylor.I´m about to remix all the works that are about to be released in my label,because the improvement in sound quality is amazing. Its like you get back the integrity of the sound as you recorded, astounishing. more on: http://www.gearslutz.com/board/6715803-post10.html
Neumann Pauls Summing Box - the real thing!
Hi there, after reading through and through the forums I decided to get a summing-box of Paul. He is really a guy who is into the things he does. Every whish I mentioned was no problem for him, so I got my box (inkl. my Name on the frontpanel and a blue Power-LED!). My box is summing 32 inputs (16x2), has 2 Stereo-Outs and uses Lawo-Transformers and what can I say: it does exactly what I was looking for. Every little thing, every detail in the mix - instruments, voices, reverb, etc - seems to be placed right where I want it to be. Actually I thought, all the time there has been a curtain between my ears and my Genelecs which has finally raised. The box does not produce any recognizable additional noise and I loved it from the very beginning. I have two Creamware A16 Ultra (DA-converter, wired via adat from my two Motu 2408 Mk3) connected to the summing box, then leading into a compressor (TFPro38 ex) and the back into my DAW per RME ADI-96 (only used as AD-converter). I am very happy with this setup and I want to thank Paul for all his support and the really fine work he has done for me and my studio. Thanks! More on: Gearslutz
Benjamin Bard producer -Switzerland - Summing Mixer Neumann v475 32CH
Just bought a 36 ch Summing Mixer Neumann v475 by Vintage Maker - Vintage Design djpaulmusic paul taylor.I´m about to remix all the works that are about to be released in my label,because the improvement in sound quality is amazing. Its like you get back the integrity of the sound as you recorded, astounishing.
More on: Gearslutz

mlange,Brentwood, TN, USA
I've got an 80-channel V475 from Vintage Maker -the build quality is excellent & Paul is a great guy! Mine also arrived very quickly via International Post. More on: Gearslutz
MJ Fick Charlestone, SC United States (Neumann v475-2a 32x4 FX send/return Vintage Summing Mixer)
I have used a bunch of summing boxes along with having mixed on SSL, Neve, etc. I gave Paul's (owner of Vintage Maker) Neumann summing mixer a shot just to see how it sounds. This thing is like a pillow for your mixes! Nice and wide, all the depth I'm looking for, and it has an FX send/Return which I found unique in a summing box a la Dangerous style. Paul is a really down to earth guy and I'm very happy I gave it a shot. It's got a unique sonic footprint that I really like as well. Silky is the best description I can conjure. I'm currently recording a Jazz album, a Rock album, and a Rap album. I have run mixes from each project through the box and found it usable for all. It's got a nice sheen to it, and I can really get use out of the Haufe Transformers when mixing ITB. Paul has recapped these units and removed the cutting filters for those concerned about line level inputs/outputs. 32 inputs - 4 outputs...$1200.00. Solid box, nice knobs, very sexy.
more on: http://www.gearslutz.com/board/6462571-post1.html
Alex Halliday from UK. Yorkshire (Neumann v475 32x2 Vintage Summing Mixer)
Just a quick note to say how pleased I am with the summing mixer. Ive summed a piano session and a jazz session and all I can say is that it makes things sound finalised or complete! Its hard to put my finger on it. It's like a sonic glue! There is definitely a stability that it adds. I'm guessing its the hauffe transformers thats doing the trick. Sounds like a record! All the best!

TornadoTed UK. Wales : LittleOne 16 Passive Summing Mixer
The build quality is really impressive and the case is very nicely engraved. I wired it in today and it does what it says on the tin and I've thoroughly enjoyed my first mix with the LittleOne 16 and DIY Neve 1290 combo. I tried it with my API style Baby Animals and wasn't so keen but maybe it just didn't suit the song I was mixing. It is subtle compared to ITB but there does seem to be that extra bit of seperation and space around instruments that I get from running into my Soundcraft Sapphyre console without the power consumption and re-call notes! All good so far and for the money a no brainer IMO. more on: http://www.gearslutz.com/board/low-end-theory/567630-has-anyone-tried-littleone-16-vintage-maker.html
Donhalli: Neumann v475 32x2 Vintage Summing Mixer
I bought one of DJ Pauls NEUMANN summing boxes. The build quality is superb and he is as said above very real and a total gentleman. He is doing us a big favour by putting together high quality products for very decent prices. I am very happy with my unit and am now interested in the mic pres that he makes. All power to the man!
Aleix Arcs from Barcelona (Filtek 32x2 Vintage Summing Mixer)
I'm Aleix! And yesterday I was testing the discrete summing Filtek bfe! And I liked very much! . Yesterday we tried it in my studio with a Digi003 + Converter RME ADI 8 to have 16 tracks for summing! The Filtek is very clear, when mixed, it is very easy, because once everything is in place, treble and bass are more clear! I tried the SPL MixDream and Neve. And I love the SPL! But after testing the Filtek, both quality and price is amazing !!!!! So I like this new Filtek you're building!
Oleh Malyy - Ukraine :Lawo 32ch Summing unit - Gearslutz.com
I has bought Lawo summing mixer 32x4 for mixing from DAW (Pro-tools) using SSL Alpha Link MADI AX as 24ch DA and some analog outboard (compressors, EQ, reverbs, delays etc).
For my task this mixer is optimally (for now). But for future, maybe, will ask developer (Paul) for more channels - all here know: channels quantity always less as we need ;) And here one very very importent thing (from my little expirience with Paul): Paul is very pleasure man for communicate and deal. And (I think) with him can be finding good way for my tasks always.
For my ears this Lawo mixer working very clear and musically. And have its own very small color: some charm. After receiving any gear, I always opened it for looking inside. Our post services sometimes working not so accurate, and before turn-on any gear I must look is it all normal inside. Here some photos of my Lawo Summing Mixer from Paul:
Aivaras from UK.London (Lawo 32x2 Vintage Summing Mixer)
I've just tested your summing mixer. Sounds really great. I'm very happy. Thanks!
ALEXANDRE LANGEVIN from Spain (Filtek 32x2 Vintage Summing Mixer)
I received this morning BFE..., great, perfect, it is very pretty and well built, i am very very happy and thank you from my heart for your patience and your kindness.

UK. Filtek vintage summing unit -
I've bought one summing mixer from  3 months ago and I'm really happy with its sound (it is Filtek BFE option). This box does exactly what all consumer multichanel audio interfaces lack. I'm currently using it with M-audio ProFire 2626. What I would like to say is that this guy is real :) and he's making very nice equipment out there. Besides, he is very approchable and helpful regarding all questions and inquiries.
Studio  VAA
+1 to the above posts. I got the filtek 16 channel version to use in a fully treated project space at the beginning of the year... throw in a pair of ensembles and set focal twins and ... well lets say this 'compact' set up blows clients of all genres away... Full stop. The clarity, imaging and tonality is simply astonishing for the outlay. An aural pleasure . If you are itb, got some nice valvie toys (and understand analogue gain staging within a daw - its amazing how many don't!) and want to get the rich and silky console joy this is the best 500 quid you could possibly spend....IMHO (ok sprinkle a healthy few k for the other bits!)

Neumann V475-2C : l'avis de mxmstben "Magnifique!"  -  French review
Niveau qualité/prix, je pense qu'il est impossible de trouver mieux, surtout qu'au niveau qualitatif, on est deja dans du tres haut de gamme. Il m'est difficile de vous communiquer un prix, étant donner que tout les caracteristiques "custom" (nombre d'in/out, connecteurs, design) influence bien évidemment le prix, mais cela reste tres tres raisonnable.... more on : AUDIOFANZINE

Fait sur demande par une societé du nom de Vintage Maker
(http://vintagemaker.site50.net), basée en Hongrie a partir d'une carte Neumann V475-2C et ses transformateurs Haufe RK292 et RK310, le tout assemblé a la main.
Tout est fait sur mesure, ce qui veut dire, que vous choisissez le nombre de in/out, le design de la face avant, les switches que vous voulez, le modele de la carte, etc...
Paul, l'homme qui assemble la machine, vous envoie meme (grande classe) les photos de la construction jour par jour.
Dans mon cas, les caractéristiques sont les suivants:
Rack taille 1 unité. 32 inputs (12 stereo, 8 mono), 4 output (2 stereo), tous les connecteurs sont des jack TRS, deux potentiometres en face avant pour regler indépendamment le niveau des sortie L et R. A noter que les transformateurs sont présents sur les buss L et R, apres sommation.


Plus simple, tu meurs, plug and play...


Tout d'abord, la premiere chose qui vous viens a l'esprit lorsque vous tester le sommateur c'est: ca sonne magnifiquement bien!
Puis en écoutant plus attentivement, on décortique les ingrédients de ce son.
Tout d'abords, en matiere de coloration, il y a certe une couleur, mais celle-ci reste tres neutre, en comparaison a un NEVE 8816 par exemple. Cette couleur rend le son tres clair, homogénéise le mix, ameliore la sonorité des fréquences basse, sans pourtant les renforcer en volume. Le tout en élargissent la stereo un poil, juste assez pour sentir la différence et obtenir un mix large. En résumé, tous les caractéristiques des bons transformateurs allemand qui se respectent.


Niveau qualité/prix, je pense qu'il est impossible de trouver mieux, surtout qu'au niveau qualitatif, on est deja dans du tres haut de gamme. Il m'est difficile de vous communiquer un prix, étant donner que tout les caracteristiques "custom" (nombre d'in/out, connecteurs, design) influence bien évidemment le prix, mais cela reste tres tres raisonnable.

Sinon, au niveau global, je n'est vraimemt rien a lui repprocher pour l'instant, la fabrication est d'excellente qualité, le son est vraiment magnifique et se prete tres bien a tous les styles de musique (Rock, hip hop, electro, pop).


1U standard rack
Neumann v475-2B
16 in by TRS balanced
2xstereo out by TRS balanced (main/monitor)
2x21 step precision Neumann gain pot by black chicken head knobs
Active/Passive option by front panel switch
Master Send/Return by front panel switch
2x21 step precision gain pot on external return/before master outputs
Atollo Records

Atollorecords is the recording label created and managed by Ivan Russo in 1998, musician, composer, sound engineer and successful music producer/Dj.

3U Standard Rack
Neumann v475-2C
32in by DB25=16 Stereo CH
3xStereo out by XLR
8xStereo to mono CH1-CH8=16mono on group A
Active/Passive by front panel switch
Master Insert/Return by front panel switch
16xstereo (32 line)Insert/Return by 4DB25 send - 4xDB25return by front panel switch
ABCD subgroup send out by 4xVol ctrl
ABCD Send return by TRS balanced
16x4=64 routing switch
Master sum/Group select switch
2way monitor OUT1/OR/OUT2  third(3)  OUT3 will be constant active
21 Step precision potentiometer white cream knobs
Power LED Blue
Master sum gain loss: -27dB
Group sum network loss: -15dB
Designed and Built for Ivan Russo by VintageMaker
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summing mixer analog 3U 13.JPG
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API 5500 Dual Equalizer
dbx 231s Dual Channel 31-Band Equalizer
neumann eq pev b pev c
Ante Culav
Musical producer / Sound enginier

2U Standard rack
3in1 option as
Neumann v475-2A
Neumann v475-2B NOS
Passive mode
16 in by  DB25  Tascam balanced
3xStereo out by TRS balanced (main/monitor)
3xON/OFF switch for A - B - C master out
Master Active/Passive by switch option
Master Neumann 2B / Neumann 2A Switch
Master Insert/Return by switch via TRS balanced
2xStereo to mono on CH1 and CH2 = 4 mono by switch
2x21 stero precision potentiometer for Neumann 2B master gain control
1x21 stero precision potentiometer for Neumann 2A master gain control
Power LED: Blue
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John Watkins - CNC Guitarparts, Barrington IL, USA

MINIMAL STYLE design by John Watkins

Moritz Bintig Hannover Deutschland MB-Musikproduktion

2U Standard Rack
Neuman v475-2C
Lawo DV975
32 in by DB25 balanced
3xStereo for Main/Monitor XLR
4xStereo to mono on stereo CH1/CH2/CH3/CH4= 8 mono by switch
Master Active/Passive by switch option
2x21 step precision Neumann master gain control L/R potentiometers
2x21 step precision Lawo DV975 master gain control L/R potentiometers
Black chicken head knobs
Mono control on the Mainout
Dedicated stereo input by TRS for second passive summing mixer

after some testing and comparing to the Shadow Hills and Rupert Neve, i´m happy to tell you that your summing amp is playing in the same league. The difference are not huge, but they are listenable, and i like what i´m hearing with yours. For me (and also a very good friend and mastering engineer) it´s even better in the sound then the others i´ve compared it to. I finally went with yours and i´m very happy with this decision.
So all in all, i´m so happy with this unit. I will sell my Neve and give back the Shadow Hills. Thanks so much. Moritz http://www.mb-musikproduktion.de/
Neumann v475 Summing Mixer Review - Pughouse Studios