Radial Engineering 4334432736 Mix 2:1 Passive Mono Mixer — main product image

Radial Engineering 4334432736 Mix 2:1 Passive Mono Mixer

Radial Engineering

Radial Engineering 4334432736 Mix 2:1 Passive Mono Mixer

Name: Radial Engineering 4334432736 Mix 2:1 Passive Mono Mixer
Brand: Radial Engineering
SKU: 4334432736

★★★★★4.7 (42 reviews)

A simple passive mixer that sums two audio channels into one mono output with zero power required.

$189.99*

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*Price sourced from Amazon.com. Last updated:Jun 20, 2026.Price and availability are subject to change.

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Overview

The Radial Engineering Mix 2:1 is a passive mono summing mixer built for situations where you need to combine two audio signals into a single output with no fuss. With two inputs feeding one mono output, it handles straightforward summing tasks — merging a pair of line-level sources into one channel, combining duplicate feeds, or collapsing a stereo signal to mono — without requiring power, batteries, or rack space. The passive topology means there are no active electronics to introduce noise or distortion, making it a transparent link in the signal chain.

Built to Radial Engineering's professional standards, the Mix 2:1 features rugged construction designed to withstand the demands of live sound and studio use alike. Its compact footprint makes it easy to integrate into existing setups wherever two signals need to become one. The trade-off of passive design is inherent signal attenuation during summing, so users should plan for adequate gain at the next stage in their chain. For engineers and musicians who need a dependable, no-power solution for basic signal combining, the Mix 2:1 delivers exactly that.

Key Features

2-channel Passive Mono Summing Mixer

with 2 Inputs 1 Mono Output

Specifications

Brand

Radial Engineering

Model

Mix 2:1

Type

Passive Mono Summing Mixer

Inputs

Outputs

1 Mono

Power

None (Passive)

Pros & Cons

👍 Pros

Completely passive design requires no power supply, batteries, or phantom power
Simple two-in, one-out configuration keeps signal routing straightforward
Radial Engineering build quality provides reliable, road-worthy construction
Compact form factor takes up minimal space on a pedalboard, rack, or studio desk

👎 Cons

Passive summing introduces inherent signal level loss that may require downstream gain compensation
Only two inputs limits its use to the simplest combining scenarios
No active electronics means no gain, EQ, or processing capability onboard
Limited feature set with no pan, mute, or solo controls

Frequently Asked Questions

Does the Radial Mix 2:1 require external power or batteries?

No. It is a fully passive device with no active electronics, so it requires no power source to operate.

Can I adjust the level of each input independently?

The Mix 2:1 sums two inputs to one output. Check the specific unit configuration for trim or level controls — the passive design means signal balancing may need to be handled at the source.

What type of audio connections does the Mix 2:1 use?

The Radial Mix 2:1 uses standard professional audio connections for its two inputs and single mono output, consistent with Radial Engineering's pro audio build standards.

Will this mixer introduce noise or coloration to the signal?

As a passive device with no active circuitry, the Mix 2:1 does not add electronic noise. However, passive summing inherently introduces some signal level loss compared to active mixing.

What are common use cases for a 2:1 passive mixer?

It is commonly used to combine two mono sources into a single channel for a PA system, to merge stereo keyboards into a mono feed, or to consolidate two mic signals into one input on a recorder.