Mixers / Summers


Blend your signals with an array of Saturnworks summers and mixers.

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Saturnworks’ wide variety of mixer and summer pedals lets you combine signals of all tastes and textures.

Check out our FAQs, or the bottom of this page, for more detailed information on the differences between passive and active summers/mixers.

Passive Summer/Splitter

A handy little passive splitter/summer pedal that allows you passively sum or split two or three channels, depending on the version.

Unlike Y-cables, which simply wire the jacks together, the Saturnworks splitter/combiner utilizes summing resistors to minimize crosstalk. In other words, the level of one channel will minimally affect the level of the other.

The micro summer/splitter is our popular passive summer/splitter in an even more compact enclosure. It features Japanese Lumberg jacks in a ‘micro’ (2″ x 2″ x 1.3″) enclosure.

The micro summer/splitter TRS to TS works like the micro summer/splitter, except it uses a TRS jack on one side, rather than two TS jacks. This can be handy to passively sum a stereo signal on a TRS cable, such as combining two separate signals on two pickups, into a mono signal to send through pedals, amps, etc.

The 2-channel patch bay + summer/splitter variation has a toggle that lets you switch the pedal between a 2-channel patch bay, or a passive summer/splitter.

The XLR summer/splitter works the same way as the regular version, but with XLR jacks.

The stereo version passively sums or splits one pair of signals into two pairs, or vice versa. The channels on the stereo summer/splitter can be used individually for mono summing/splitting.

Passive 2-Channel Mini Mixer, 2-Channel Mixer with Switches, 3-Channel Passive Summer w/ Switches

A simple passive mixer to combine two signals into one, with controls to fine tune the levels.

The Saturnworks passive mixers and summers take two or three inputs and combines them to one output with volume control for each channel to allow fine volume trimming. The versions with switches adds on/off switches to each channel. The ABC summer is comparable to the Morley ABC combiner.

The passive mixers and summers use summing resistors to minimize crosstalk between channels.

Active Summer, Active Summer + Phase, Active Stereo Summer

Please note: All our active summers feature our ‘bass mod,’ which allows lower frequencies to enter the circuit without cutting any highs. Our active summers are ready to combine signals from guitars, basses, synths, drum machines, etc. 

An active summer/combiner pedal combines either two or three signals into one without any tone loss or crosstalk between channels.

The Saturnworks active summer combines two signals into one, using active circuitry to eliminate crosstalk and balance mismatched impedance. Unlike Y-cables, which simply wire the jacks together, or passive summers, which can’t completely get rid of crosstalk, the Saturnworks active summer utilizes active electronics to eliminate crosstalk—in other words, the level of one signal affecting the level of the other. The circuit also helps with mismatched impedance.

Our active stereo summer combines two stereo signals into one stereo signal. So it sums four inputs into two outputs.

The active summer + phase adds a phase inverting circuit/toggle. This version can flip the phase 180 degrees on one of the channels. This setup can help with out-of-phase issues.

Active 1/8″ Stereo + 1/4″ Mono Active Summer

Connect a phone, computer, MP3 player, or other stereo line level signals, along with your guitar, to your pedals or amp!

If you’ve ever tried to connect your phone or computer to a guitar amp, you probably noticed that the signal seems very loud and only half there. That’s because the signal coming from a phone or a computer is too hot (line level) and most pedals and amps are mono, which means you’re only hearing half the signal. The Saturnworks 1/8″ stereo to mono active summer solves both issues and lets you send your music through you guitar gear.

The 1/8″ (3.5mm) stereo to mono active summer performs two jobs: First, it actively sums the stereo input into mono. It also converts the impedance from line level to instrument level. This allows you to connect line level stereo inputs, such as phones, computers, MP3 players, etc. to pedals and amps. Its active circuitry balances mismatched impedance and features zero crosstalk between channels.

The additional 1/4″ TS inputs is for a guitar or bass. This allows you to play along with the sound coming from your phone or computer.

Active Mixer

Please note: All our active mixers feature our ‘bass mod,’ which allows lower frequencies to enter the circuit without cutting any highs. Our active mixers are ready to combine signals from guitars, basses, synths, drum machines, etc. 

Using active electronics to balance the signals and eliminate crosstalk, the Saturnworks 2 and 3 channel active mixers blend two inputs into one output. Saturnworks mixers combine inputs from various instruments with differing impedance. Saturnworks active mixers are also perfect for the mixer section of a parallel pedal chain setup.

While inexpensive and simple, passive mixers cannot isolate the channels. If you turn down one channel on a passive mixer, the other gets slightly softer as well. This is known as crosstalk. The active version fixes crosstalk problems, however, by using active circuitry to isolate both channels. This means that one channel’s level doesn’t affect the level of the other(s). The active circuitry also balances mismatched input impedance.

Saturnworks active mixer pedal comes in 2, 3, and 4 channel versions as well as versions with or without independent footswitches, or toggle switches, for each channel.

The versions with the “aux input mod” (formerly known as the “MP3 mod) modifies one of the inputs of the mixer to accept a low-impedance TRS input from an MP3 player, computer, or phone — essentially adding an ‘aux in’ to your amp/setup. The pedal mixes both the stereo aux input and the guitar input into a single mono (TS) output. The aux input mod versions come with a 1/4″ – 1/8” adapter. Please note: the aux input does not work well for a standard guitar input. It should be used as a dedicated aux input only.

The active mixers with a phase switch adds an active phase reversal circuit + toggle switch. The phase circuit flips the phase 180 degrees. This can help with out-of-phase issues when summing or mixing.

Saturnworks summers and mixer pedals include high quality features and components including:

  • Durable cast-aluminum enclosures – the black versions feature black powder coated finishes.
  • Heavy duty Neutrik jacks – the black versions feature premium Switchcraft jacks.
  • All Saturnworks pedals are handcrafted and bench-tested in the USA.
  • A one-year warranty against defects.

Saturnworks pedals can be upgrade with a variety of premium upgrades and customizations, including our phenomenally smooth, quiet, and extremely durable soft click latching switch. Contact us for details.

Passive vs Active Summers/Mixers

While the array of summers and mixers we offer may seem daunting, Saturnworks mixers come in two basic flavors: passive and active. Read on to learn more.

summer comparison


Passive and active mixers/summers both have their advantages and disadvantages.

If you just wire two signals together (like a y-cable, for example), they essentially become the same circuit. Being simply hooked together, whatever you do to one side you do to the other. With nothing to prevent interaction between the two channels, if you turn one side down the other will get softer as well. This is called crosstalk. Passive mixers are a step up from a y-cable in that they use summing resistors to combine/sum the signals. This reduces, but does not eliminate, crosstalk. Depending on the types of signals being mixed, with a passive mixer, if you turn one side down completely the other side gets around 20% softer. While you can minimize crosstalk with a passive mixer, you cannot eliminate it altogether.

Passive mixers can have problems when trying to mix signals with different impedance. If you’re trying to mix a standard high-impedance instrument level signal from a guitar with a low-impedance line level signal from a keyboard or MP3 player, for example, the stronger line level signal may cancel out the guitar signal altogether. So while inexpensive and simple, passive mixers work best when you’re okay with some degree of crosstalk, and you are combining signals that have roughly the same impedance.

Active mixers/summers are often a bit larger, more expensive, and require power to function. However, they do offer some key performance advantages. Active mixers and summers eliminate crosstalk between channels. This means that you can turn one channel down without affecting the level of the other(s). Active mixers/summers also balance mismatched impedance so that you can combine a wider range of signal types without levels issues.

Which is the right mixer for you?

Of course the question is what type of mixer you need. The type of mixer/summer that will be best for you depends on your setup, the types of signals you’d like to combine, the features you might like, and your budget. Passive mixing/summing works well in many cases, and Saturnworks has provided passive mixers/summers to many thousands of happy customers. From a technical perspective, active summing/mixing is the best way to combine two signals. However, the mixer you select depends on your specific needs and budget.

Benefits of passive mixers:

  • Can save on cost and space.
  • A simple devices that doesn’t require power.
  • May be used to combine similar types of signals, e.g. guitar + guitar, or synth + synth.

Benefits of active mixers:

  • A technically superior mixer with no level loss or crosstalk.
  • Can combine different types of signals, for example,  guitar + synth.

Feel free to contact us if you have more questions.

Please note: The pedals in the images are stock photos and not the actual pedals you will receive. The pedals you receive may vary in their graphics, knob colors, and/or LED colors, where applicable. We have our graphics options here.

Additional information


Passive Summer/Splitter, Passive Summer/Splitter Black, Micro Passive Summer/Splitter, Micro Passive Summer/Splitter TRS to TS, Passive Summer XLR, Passive 3-Channel Summer/Splitter, Passive Stereo Summer/Splitter, Passive Stereo Summer/Splitter TRS, Passive 2-Channel Mini Mixer, Passive 2-Channel Mini Mixer Black, Passive 2-Channel Mixer Stereo TRS Jacks, Passive 2-Channel Stereo Mixer TS Jacks, Passive 2-Channel Patch Bay + Summer/Splitter, Passive 2-Channel Mixer with Switches, Passive 3-Channel ABC Summer with Switches, Active 2-Channel Summer, Active 2-Channel with Aux input Summer, Active 2-Channel Summer + Phase, Active 2-Channel Summer with Switches, Active 2-Channel Mixer, Active 2-Channel Mixer w Phase Switch, Active 2-Channel Mixer with Aux Input Mod, Active 2-Channel Mixer with Switches, Active 2-Channel Mixer with Switches with Aux Input Mod, Active 2-Channel Mixer with Switches + Phase, Active 2-Channel Stereo Summer, Active 3-Channel Summer, Active 3-Channel ABC Summer with Switches, Active 3-Channel Mixer, Active 3-Channel Mixer with Switches, Active 3-Channel Mixer with Switches with Aux Input Mod, Active 4-Channel Mixer, Active 4-Channel Mixer with Switches, Active 4-Channel Mixer with Switches + Aux Input Mod, Active 5-Channel Summer, Active 5-Channel Mixer with Switches, Active 5-Channel Active Mixer with Switches + Phase, Active 5-Channel Mixer with Toggles