SKU: 30906508384

EMPIRICAL LABS FATSO EL7x - Analog Tape Simulator/Optimizer

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Description

EMPIRICAL LABS FATSO EL7x - Analog Tape Simulator/OptimizerEleven Ratio Emulates 1176 Compressor Four Compression Modes Soft Clip Programmable High Frequency Saturation Switchable Transformer Circuits Backwards Stepping Front Panel Button Extended Stereo Link Functions Side chain Input and Output True Bypass Made in the USA The FATSO EL7x from Empirical Labs is a digitally controlled analog processor that gives musicians and engineers easy access to many of the desirable characteristics exhibited by older

  • Eleven Ratio Emulates 1176 Compressor
  • Four Compression Modes
  • Soft Clip
  • Programmable High Frequency Saturation
  • Switchable Transformer Circuits
  • Backwards Stepping Front Panel Button
  • Extended Stereo Link Functions
  • Side-chain Input and Output
  • True Bypass
  • Made in the USA

The FATSO EL7x from Empirical Labs is a digitally controlled analog processor that gives musicians and engineers easy access to many of the desirable characteristics exhibited by older tube and Class A electronics and magnetic tape mediums. This two channel audio processor musically integrates frequencies and transients, increasing the apparent volume while keeping tight control over peak levels. There are several compressor types with fixed attacks and releases. You can enhance and soften the sound of digital mediums such as DAWs, hard disk recorders, CD players, MP3s etc.

With the FATSO, recording studios and audio production facilities can enhance and soften the sound of digital recordings. Large Distressor-style knobs control the input and output levels. It features four compression modes including the Buss and the Spank settings, which can be selected and combined. Seven high frequency saturation Warmth settings are also present. The FATSO features switchable transformer circuits, which can add the musical artifacts generated by classic devices, such as low order clipping and inter-modular distortion, as well as transient clipping.

ELEVEN replaces the old GP Ratio and emulates the UREI 1176LN in 20:1 mode with a slow attack and a fast release. With the slower "1176" attack, the transients keep the dynamics present, while the high ratio can limit the dynamic range of any source.

  • Soft clip features modeled after broadband tape saturation, without the noise. Smooth clipping up to 20% THD
  • User programmable high frequency saturation, simulating the "softening" for which analog tape and phonographs are known. This is the "Warmth" control on FATSO
  • Switchable transformer circuits, which can add the musical artifacts generated by classic devices like Neve, API, etc. These artifacts include frequency "rounding", low order clipping and inter-modular distortion, transient clipping, and some other very musical non-linearities
  • Four Compression Modes: One for tracking, one general purpose, one "bus" compressor, and SPANK!; all linkable. Classic knee compressor sound that really grabs
  • SPANK!: An additional limiter that musically smashes the dynamic range, and can be used to stop clipping before digital recorders. There is a subtle knee followed by hard limiting
  • Huge "DISTRESSOR" knobs with high resolution numbering - For easy readability and repeatable settings. They also go to 10-1/2
  • Distortion indicator lights: A 0 VU LED and a "Pinned" (5%) LED. No hard clipping until a few dB past "Pinned"
  • Side-chain output and input for EQ-ing control signals
  • Locked, calibrated, output level: Allows speed in setting tape and live mix levels
  • Foolproof operation: It's almost impossible to get a bad sound
  • Discrete and Integrated Combination: The best of speed/linearity with repeatability. Hand tested & selected components. All metal film and Roederstein resistors in the audio path. Top quality components, most being high temperature military spec parts
  • Switchable 115/230 volt operation. Extra fuse provided inside unit
  • True Bypass: Know what it's really doing. All contacts doubled up for maximum reliability. No internal audio connectors
  • XLR and 1/4" phone ins and outs
  • XLR fully balanced, transformer-less design, pin-2 hot. Changeable by user to pin-3 hot
  • No internal connectors, high reliability parts and military grade switches and relays
  • Three year limited warranty
  • Hand wired and calibrated in USA
UPC: 854682006047
In the Box
EMPIRICAL LABS FATSO EL7x - Analog Tape Simulator/Optimizer
  • IEC Power Cord
  • Limited 3-Year Warranty
Frequency Response 2 Hz to 60 kHz, (+0,-3 dB)
Dynamic Range 110 dB from maximum output (20% THD soft clipping) to minimum output
Signal to Noise > 100 dB
Distortion 0.06 to 20%
Inputs/Outputs DC coupled
Attack Time 1 mS to 60 mS
Release Time 0.05 to 3.5 seconds
Power Consumption 25 W Max typically. .3 A @ 115 V
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 30906508384

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Julie Lopp
Port Orchard, US
★★★★★ 5
Great product! I love the feel of these.
Size: Queen, Color: White
“I recently purchased the Serta Power Chill Cooling Pillow Protectors, and they have been a game-changer for my sleep comfort. These pillow protectors have exceeded my expectations in several ways. First and foremost, the cooling technology is fantastic. I tend to sleep hot, especially during the summer months, and these pillow protectors have made a noticeable difference. They keep my pillows cool and comfortable throughout the night, which has led to more restful and uninterrupted sleep. The fit is also excellent. They easily slip over my standard-sized pillows and stay securely in place without any annoying bunching, wrinkles or slipping during the night. And the zipper is amazing. Having no wrinkles in my cover is easier on my hair. What’s great about these protectors is that they not only keep my pillows cool but also protect them from spills, stains, and allergens. It gives me peace of mind knowing that my pillows are safeguarded while I enjoy a cool and refreshing sleep environment. There is no noise when sleeping on this cover, it’s soft. Cleaning is a breeze. They are machine-washable and maintain their cooling properties even after multiple washes. The quality of the materials used is evident. These protectors feel durable and well-made, promising long-lasting use. While they are slightly more expensive than basic pillow protectors, the added cooling benefits and protection they offer are well worth the investment. They’ve made a significant difference in my sleep quality, and I highly recommend the Serta Power Chill Cooling Pillow Protectors to anyone seeking a cooler and more comfortable night’s sleep.”
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Reviewed in the United States on October 6, 2023
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Birdie
Phoenix, US
★★★★★ 4
Loose on standard pillow.
Size: Queen, Color: White
Too large for standard pillow. It would fit a queen size pillow much better. It does stay cool.
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Reviewed in the United States on November 20, 2025
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AmazonSmile
Charlottesville, US
★★★★★ 5
Soft and cool. Very cool. 🧊
Size: Queen, Color: White
I bought these for my memory foam pillow and they’re excellent for cooling it. I use 2 of these on the pillow for maximum chill factor and it works. They’re very soft, the zippers are high quality. Easy to put on with a bit of stretch- generously sized. They’re stain resistant. I’m glad they’re NOT waterproof because they’d be too hot then. They’re very durable. Wash on delicate setting in a mesh bag and air dry and they last long. They’re very quiet- smooth and silky. Definitely recommend!
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Reviewed in the United States on January 15, 2026
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Jamie Cowan
Dallas, US
★★★★★ 3
Cool enough
Size: Queen, Color: White, Size: Queen, Color: White
I thought I had purchased pillows so when I received these I was a little disappointed. However that was 100% on me for not reading the listing and just trusting my search. I decided to give them a try and so far they seem ok. They don’t stay cool even though I have them on cooling pillows. They are super thin but very soft. They fit on my pillows perfectly. I don’t think it has improved my sleep quality but it hasn’t made it any worse either. I don’t think they are waterproof but I don’t really want to test that. I like that the zipper is small and seems to be decent quality. Smelled heavily of chemicals when I first took it out of the package but that disappeared after a few minutes.
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Reviewed in the United States on March 21, 2026
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Amazon Customer
Chelsea, US
★★★★★ 5
Sleep like a baby
Size: Queen, Color: White
These pillow covers are cool. They keep you cool at night. very, very comfortable.
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Reviewed in the United States on May 13, 2026

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