Analog Summing Box – Transform Your ITB Mix into True Analog 3D Sound
Custom-built passive and active analog summing mixers by VintageMaker turn your ITB (in-the-box) mixes into an open, three-dimensional analog console experience. With over 15 years of experience, VintageMaker builds summing mixers ranging from 4 to 96 channels, fully customized, with a lead time of 8-16 working days.
Why Choose a VintageMaker Analog Summing Box?
- Real Analog Physics: Voltage summing produces natural soft saturation, harmonic enrichment, and the classic analog “glue”.
- Ultra-Low Noise & High Headroom: Optimized circuit topology handles 64+ channels without compromising noise floor or headroom.
- Fully Customizable I/O & Features: TRS, DB25, XLR inputs; mono switches; vari-gain; master inserts; subgroups; monitor outputs; transformer options.
- Premium Neumann & Haufe Transformers: Legendary German transformer warmth, color, and spatial depth.
- Handbuilt & Laser Engraved: Each unit is meticulously built in the EU, with detailed photo updates.
Compatible with UAD Apollo, RME Fireface, MOTU, Focusrite, PreSonus, Audient, and any multi-output audio interface. A cost-effective alternative to SSL, Burl Audio, and Neve summing mixers, with unmatched customization options.
Customer Reviews
“Paul is incredibly passionate and knowledgeable. VintageMaker offers unmatched customization: active/passive, transformers, subgroups. The sound is clean, 3D, transparent – separation, clarity, width. Turns ITB mixes into open analog console magic. Handcrafted, laser-engraved – dynamite!”
Gearspace User
“I auditioned SPL, Dangerous, Neve, Burl… and kept the VintageMaker Neumann v475 because of its outstanding sonics. Wide, depth, legendary Neumann warmth. Excellent build quality and great communication from Paul.”
Gearspace User – Long-Term Owner
“VintageMaker gear delivers clean, 3D, transparent sound, handcrafted with serious attention to detail and laser engraved – they look as good as they sound. It’s not just about the looks; the audio quality is killer. I’m getting perfect separation, clarity, and width. VintageMaker transforms my ITB mixes into that open, pristine analog console vibe every pro is chasing.”
Klaus DE
Analog Summing Models
4-24 Channel Desktop Summing Box
Compact passive/active design with mono switch and headroom control. Ideal for Apollo Twin/X, MOTU hybrid rigs.
8-32 Channel Rackmount Mixer
19″ 2U rack with 3× master insert and balanced I/O. Professional subgroup routing and patching flexibility.
LittleOne Mini Series
Ultra-compact 4–8 channel passive desktop summing mixers. Custom name engraving. Perfect analog summing entry point.
Filtek-Neumann SSL Transformer Models
Transformer-coupled summing for mastering-grade warmth, color, and harmonic complexity. Pinnacle of analog character.
Neumann V475 Transformer Summing
Vintage German console tone with v475-2C amp warmth, 3D spatial depth, and harmonic richness.
Customer Feedback
“We have ordered a lot of gear online over the years, and VintageMaker did the best job with packaging. The units were packed with great care, and what really stood out was the excellent communication from Paul. For weeks, we exchanged long-winded emails for designs and ideas about what would be best for our needs. Paul cut zero corners and created a summing mixer that suited all our needs without any input. Whether you’re a bedroom producer or a professional working in a million-dollar hybrid studio with racks of analog gear, you should definitely reach out to Paul and look into the myriad of options he can create for you. With everything from high channel counts to subgroups to high-end input and output transformers, VintageMaker has you covered. And to top it all off, you will receive detailed email updates, photos, and more every step of the way during the build process of your unit. The lead time may be about 3-4 weeks, but it’s well worth the wait to have your dream summing mixer! While many great companies like SSL, Burl, and Neve offer summing mixers these days, none of them come close to the outstanding flexibility and cost-effectiveness that VintageMaker offers.
Johannes TX
Your Custom Build Process
- Free Consultation: Tell Paul your requirements—channel count, I/O type, features, form factor. Zero obligation, total clarity.
- Custom Design: Paul designs your circuit to spec—passive or active, transformer choice, headroom tuning, panel layout.
- Handbuilt with Updates: 8-16 weekdays build with detailed photo and email updates at every stage. Premium EU components throughout.
- Delivered & Supported: Careful packaging, laser-engraved finish, lifetime support included.
Technical Specifications
- Channel Count: 4, 8, 10, 16, 24, 32, 48, 64, 96 channels
- Circuit Type: Passive summing / Active op-amp / Transformer-coupled
- Inputs: TRS 6.35mm · DB25 (DSUB) · XLR balanced
- Outputs: TRS · XLR · custom on request
- Transformer Options: Neumann v475 · Haufe · custom
- Optional Features: Mono switch · Vari-gain · Master insert · Subgroups · Monitor out
- Format: Desktop · 1U rack · 2U rack · 3U rack
- Finish: Laser-engraved · Custom labeling
- Lead Time: 3–4 weeks from order confirmation
- Origin: Handbuilt in EU, since 2010
- Support: Lifetime support by Paul
Compatible Interfaces – Here are some examples:
- UAD Apollo Twin / x6 / x8 / x16
- RME Fireface UCX / UFX / 802
- MOTU 8A / 16A / 828 / 1248
- Focusrite Scarlett / Clarett / Red
- PreSonus Quantum / Studio 192
- Audient ASP880 / iD44 / ID48
- Antelope Audio Orion / Discrete
- Apogee Symphony / Ensemble
- SSL 2+ / 12 / 18 series
Expert Reviews
★★★★★
“Since 2020 I’ve been using a VintageMaker 16-channel active Summing Mixer with a v475-2C Neumann Amp. It preserved the original sound while adding enormous harmonic content. The 3D spatial effect is incredible — especially with 16–24 tracks summed. Highly recommended!”
Patrick Schneider, Composer — Switzerland, 2025
★★★★★
“Exceeded my expectations — serious upgrade. Highly recommend Paul’s custom-built products. Great communication and a great sounding box!”
Alexander Roth, 2021
★★★★★
“Paul, the owner of VintageMaker, is an exceptional person to do business with, especially within the small pro audio world. He is incredibly passionate and knowledgeable about gear and has been making custom summing mixers to order for years. What sets VintageMaker apart from other companies is the extensive options and customization that they offer. They can make summing mixers with both active and passive circuitry, along with other flexible options that make them a no-brainer for any producer or audio engineer.”
SammyBoy CA, 2017
FAQ – Analog Summing Boxes
What is an analog summing box?
An analog summing box (or summing mixer) combines multiple audio signals from a DAW using analog circuitry instead of digital math. Results: natural voltage summing, soft harmonic saturation, increased width and depth, and the classic analog “glue” sound.
Passive vs Active Summing
Passive summing mixes channels without amplification — ultra-transparent, with great SNR and big headroom. Many Grammy-winning producers use it successfully. Any signal reduction can be easily compensated with your DAW mic preamps. Active summing uses op-amps with transformer circuits to compensate, offering more gain, and extra harmonic coloration.
Channel Capacity
VintageMaker builds summing mixers from 4 up to 96 channels, optimized for ultra-low noise floor and high headroom.
DAW Interface Compatibility
Compatible with all professional audio interfaces including UAD, RME, MOTU, Focusrite, PreSonus, Audient, Apogee, Antelope Audio, SSL — basically any interface with multiple analog outputs.
