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4 Input Ch Analog Summing Mixer for UAD Apollo Twin X MKII – Focusrite – Audient – Motu – Desktop Box

5.00 out of 5 based on 1 customer rating
(1 customer review )


4 TRS In / 2 TRS Out Discrete Dual Stereo Passive Analog Summing Mixer

Maximize the full potential of your UAD Apollo Unison Preamps. Route your mix audio tracks to the Summing Mixer, and then record back the final analog mix using the legendary Helios, Neve 1073, Manley, Century Tube, Avalon, Luna API, SSL, UA610 and Avalon Preamp emulations to get the Real Analog-Console 3D wide sound character


4 Input Channel Analog Stereo Summing Mixer – LittleOne 4×2 TRS with Mono switch 

  • 4 in TRS balanced
  • 2 out TRS balanced
  • 1 x Stereo to 2 Mono on 1/2 stereo input = 2 mono youtube 
  • Build time: 10 business/working weekdays (estimated maximum)
  • Select your Insterface sound card: UAD Apollo | Apogee | Arturia | Behringer | Focusrite | M-Audio | Motu | PreSonus | Prism | RME | Roland | SSL | Steinberg | Tascam | OTHER let me know

You can get as many channels and options as you want, so let’s build your gear!

Do not find your summing mixer? Tell me your DAW Interface Type! Do not find your Gear? Don’t worry! Just tell me what you need and I build for you!

You can order different sum bus gain reduction mixer (let me know about your DAW mic preamp gain range)

Or Select Reduction: -6,5dB / -10dB / -15dB / -20dB / -25dB (free order)

STM – Stereo to Mono Switch: It provides an extra stable Real Analog Mono Base for your mix (on monos like Kick/Bass/MainVox/Snare and so on), saving precious digital-to-analog (DA) channels (so you don’t waste stereo L/R for a mono instrument), and offers superior separation and 3D depth for the rest of your stereo instruments. This feature turns L/R inputs ‘COMBINED’ (two hard-panned L/R inputs) into an absolutely centered mono signal (1 x stereo to 2 mono).

Routing example:

  • IN1 = BASS
    IN2 = KICK
    IN3/4 (stereo) = REST STEREO

How to connect a summing mixer to the DAW? YOUTUBE

Selected VISHAY DALE military metal-film resistors
In/Out: Stereo Balanced Discrete path
Insertion input resistance: -15dB / -20dB / -25dB (order)
Output impedance 600-1k ohms balanced
Output level: -15 dB nominal (basic setup)
Frequency response: 0-500Khz
Crosstalk 1Khz: -95dB
Signal to Noise rate (SNR): -110dB
TRS wiring: (Tip:HOT/,Ring:COLD/Sleeve:GROUND)
Pure hand made! Hand wired and tested point-to-point!
Laser engraved massive aluminium alloy box


UAD Apollo, Apogee, Arturia, Behringer, Focusrite, M-Audio, Motu, PreSonus, Prism, RME, Roland, SSL, Steinberg, Tascam, OTHER let me know



1 review for 4 Input Ch Analog Summing Mixer for UAD Apollo Twin X MKII – Focusrite – Audient – Motu – Desktop Box

5.00 out of 5 stars

  1. Reviewer profile image
    5 out of 5


    Cool passive summing noiseless, infinite headroom and no power required.

    The best way to mix outside the computer, enjoy clip free summing and then use the different mic pres of your choice to send your mix back to your DAW.

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