Behringer Ultrafex II

$45.77 Price Tier: Budget

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Page last updated Jun 03, 2026

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5.0 (2)

$45.77 6 available Used

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Average Price: $46

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$100

$501+

Price Tier

In the Effects Processors category, Behringer Ultrafex II is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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Description

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Elevate your studio's sound with the Behringer Ultrafex II, a highly versatile effects processor designed to enhance your audio recordings with precision. Whether you're a seasoned producer or just starting out, this unit offers a range of tools to bring out the best in your sound. The Ultrafex II is renowned for its proprietary stereo enhancement circuitry, which provides a broadened stereo image and adds dimension to any mix. From vocal tracks to full instrumentals, this effects processor ensures clarity and presence without compromising the integrity of your original sound.

Incorporating the Ultrafex II into your setup is straightforward, thanks to its intuitive interface and comprehensive control options. The unit functions seamlessly in both studio and live environments, adapting effortlessly to your needs. With its dynamic enhancement features, you can achieve punchier bass, crisper highs, and overall balanced output, making it an essential tool for mix engineers and live sound technicians alike.

Key Features:

Proprietary stereo enhancement circuitry for improved spatial imaging
Dynamic enhancement for richer bass and clearer treble
Simple and intuitive interface for easy integration into any setup
Suitable for both studio recording and live sound applications
Comprehensive control options for tailored sound shaping

Product specs

Brand	Behringer
Model	Ultrafex II EX3100 2-Channel Multiband Sound Enhancement Processor
Finish	Black / Silver
Year	1990s
Categories	Compressors and Limiters, Gates and Expanders

FAQs

What is the primary function of the Behringer Ultrafex II?: The Behringer Ultrafex II is a multiband sound enhancement processor designed to improve the clarity and presence of audio signals, often used in studio recording to enhance the overall sound quality.
How does the Behringer Ultrafex II enhance audio signals?: The Ultrafex II uses multiband processing to enhance specific frequency ranges, adding clarity and punch to audio tracks by dynamically adjusting the sound in real-time.
Is the Behringer Ultrafex II suitable for live sound applications?: Yes, the Behringer Ultrafex II can be used in live sound settings to improve the clarity and definition of the audio output, making it a versatile tool for both studio and live environments.
Can the Behringer Ultrafex II be used with other effects processors?: Yes, the Ultrafex II can be integrated with other effects processors in a signal chain, allowing for enhanced sound processing and greater control over audio output.
Does the Behringer Ultrafex II require a specific power supply?: The Behringer Ultrafex II typically requires a standard AC power supply, compatible with most studio and live sound setups. Always check the unit's specifications for exact power requirements.

Videos

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Thin Mix ? Let's FIX ! APHEX Model 106 Compressor and BEHRINGER Ultrafex II Model EX 3100 review

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Behringer Ultrafex II.

Features and functionality

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The Behringer Tube Ultrafex's "low mix" bass processor is praised for its depth and definition, especially in the "dry & punchy" mode with a low contour filter.
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Users highlight the Ultrafex II's ability to "sweeten the highs" and "widen the stereo field," making it a staple for vintage and modern recording setups.
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Mods and upgrades

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Replacing stock Sovtek 12AX7A tubes with TJ FullMusic 12AX7's is reported to enhance sound quality, with an initial burn-in period of 48-72 hours improving over weeks.
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Owners consider retrofitting the Behringer units with OT-1 transformers, as indicated by blank sockets on the PCB for potential upgrades.
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User experience

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The Ultrafex is noted for effectively enhancing both bass and high frequencies, while its soundstage surround effect adds a sense of space without losing vocal clarity.
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Owners have consistently used the Ultrafex II over two decades, indicating its reliability and ongoing relevance in various music production environments.
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Comparisons

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Users mention Behringer's "starved plate" tube design, which some view skeptically, but still acknowledge the signal passes through the tubes and impacts sound quality.
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Use cases and applications

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The Ultrafex II has been used effectively in live performance-style recordings, enhancing bass, highs, and stereo width for electronic music production without a computer.
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Value and pricing

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Described as a crucial purchase for maximizing sound quality in budget-conscious setups, the Ultrafex II is praised for its impact on stereo mixes.
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Liam Howlett

Music Producer

The Prodigy

Verified via Theprodigy

You can see this piece of equipment lying on Liam's floor in Dirtchamber Sessions inner sleeve! Gear info:

It's a two-channel psychoaccoustics soundprocessor, also containing a multiband processor, an exciter, an enhancer, a noise reduction-function that can either be adjusted manually as also be used with an automatic function (this is supposed to work in a similar way to the 'Fingerprint-method'), various surround-fx and a dynamic VU-meter.

A great thing, and absolutely not expensive! (~200,- DM, which would be about 65,- Pounds) Quite cheap for a such an upper-class toy!

Rob Playford (AKA Timecode)

Music Producer, DJ

Verified via Archive

According to this article on the making of Goldie's Timeless album from the June 1998 issue of Sound on Sound magazine, Playford's studio gear includes an Ultrafex II unit.