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SPL Twin Tube ProcessorbyUniversal Audio
 SPL Twin Tube Processor by Universal Audio is a Virtual Effect Audio Plugin. It functions as a VST Plugin, an Audio Units Plugin, an RTAS Plugin and an AAX Plugin. UAD Hardware is required.
SPL Twin Tube Processor
Product SPL Twin Tube Processor
Developer Universal Audio
Price (MSRP)
Type / Tags Analog Emulation
Plug-in, App & Soundware Format(s)
Hardware Powered 
Operating System Availability
Download Released
Downloads Released
Downloads Released

TwinTube is audio proof of the old adage "a little goes a long way." Just a touch of TwinTube's unique analog tube warmth can bring out the color and personality of a vocal or instrument, adding that essential "something" to a mix — without impacting its dynamic range. Today, SPL brings the distinctive features, sound, and character of the original hardware TwinTube to the UAD Powered Plug-Ins platform.

Musicians and recording professionals have long employed classic SPL TwinTube hardware for its ability to make vocals and instruments pop, emphasizing select harmonics to add presence and dimension without impacting dynamic range. One of the biggest and best-known fans of the TwinTube is multiple Oscar- and Grammy-Award winner Hans Zimmer (composer for soundtracks including Gladiator, Pearl Harbor, The Da Vinci Code, and The Dark Knight), who uses a huge rack of analog TwinTube hardware units to record orchestras. Today, for less than the price of a single hardware unit, this easy-to-use UAD plug-in version offers multiple instances, with seamless integration and dependable recall.

TwinTube combines two essential tube effects, Saturation and Harmonics, in a single processor. As its name implies, it's designed as two fully independent stages — which can be run together or separately — each providing its own unique character. The result is an exceptionally wide-ranging palette of sonic shaping, from smooth and creamy overdrive to deep, growling saturation, with a range of harmonic overtones to add warmth.

In the hardware version of TwinTube, saturation is created by pushing the tube beyond its normal limits. This causes a gradual building of harmonic distortion, accompanied by limiting that has been compared to analog tape distortion. It can be employed to subtly fatten sounds when applied sparingly, and to add warm overdrive coloration when cranked up.

The Harmonics section adds a special circuit for overtone processing that reacts dynamically to the incoming signal. Using the Harmonics control, you can adjust and enrich the overtone processing intensity across four frequency settings (2 kHz, 3 kHz, 6 kHz, and 10 kHz), as well as the overall effect. The result is an intensified presence that adds a sense of "air" and space to your sound — bringing a vocal or instrument forward in a mix.

In both tracking and mixdown, TwinTube can be used to work wonders on vocals, instruments, strings, woodwinds, and more. A small amount of tube saturation can increase apparent loudness and emphasize attack. And just a touch of harmonic distortion can help boost desired overtones, while adding air and imaging.

A Note about UAD Powered Plug-ins
UAD-2 and UAD-1 Powered Plug-Ins run exclusively on Universal Audio's UAD DSP Accelerator Cards. All available Powered Plug-Ins are included in the UAD Software Installer/Updater Package; and every Plug-In title has a separately activated 14-day trial -- so users can try before they buy, at their own pace. Once a user decides to purchase a Plug-In, they can click on the Plug-In toolbar "Buy" button, which automatically takes them to the www.uaudio.com website and carts the plug in; or this can be done manually via browsing our webstore. Once the purchase is complete, a downloadable Authorization File is made available. Users simply drag and drop this Auth. File into the UAD meter, and the Plug-In is authorized. UAD-1 users can transfer Plug-In licenses to UAD-2 format for free (one time only). Via Customer Support, Universal Audio also allows registered UAD owners to sell their UAD card(s) with Plug-In licenses, transferring the licenses to the new card owner (subject to Universal Audio approval).

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