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Explore the advantages of your UAD Apollo Unison-enabled preamps by sending your tracks through analog summing mixer then record master stereo with near-zero latency through preamp emulations from Helios, Neve, API, Manley.

4 channel input passive summing mixer with stereo to mono designed for Universal Audio UAD Apollo Twin X

SUM BUS reduction -20dB designed for Apollo Twin unison preamps. By this value you have the best SNR (signal to noise ratio) and efficient headroom.

benefits of summing mixer headroom analog vs digital
mixer headroom analog digital

Just a quick note to say how pleased I am with the summing mixer.

I’ve 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. Sounds like a record! All the best! Alex


stereo mono switch studio mixer

For mono instruments like kick / bass/ snare and so on, I suggest the stereo to mono input conversion switch, that’s the one of the most liked features by my customers, the mono is true analog mono, and you save precious analog outputs from daw, no waste 2 (L6R) channels for a single mono instrument.
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How to hit the analog harmonic distortion on the PASSIVE side of summing?

Many people don’t know this, or they don’t care about proper gain staging, however it is the one of the most significant and important parts of analog mix procedure.

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Discover the benefits of using the VintageMaker custom summing mixer in conjunction with your UAD Apollo Unison-enabled preamps. By routing your tracks through the analog summing mixer, you can take advantage of the rich, warm sound that only analog gear can provide. Record your final stereo mix with near-zero latency through preamp emulations from renowned brands like Helios, Neve, API, and Manley, adding an extra layer of depth and character to your music.

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