Black Lion Audio T4BLA Opto Element
SKU: 43513100399

Black Lion Audio T4BLA Opto Element

Sale price$147.60 Regular price$164.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Black Lion Audio T4BLA Opto ElementThe ultimate opto upgrade. At the heart of almost every optical compressor lies a T4b style Optocell. When designing the B172a compressor, Black Lion Audio tested every single readily available and boutique T4b one could get their hands on and found the options to be sorely lacking. Black Lion found that no available optocells were holding up to their rigorous testing nor did they deliver the feel and quality that one should expect from a Black Lion

The ultimate opto upgrade.

At the heart of almost every optical compressor lies a T4b style Optocell. When designing the B172a compressor, Black Lion Audio tested every single readily available and boutique T4b one could get their hands on and found the options to be sorely lacking. Black Lion found that no available optocells were holding up to their rigorous testing nor did they deliver the “feel” and quality that one should expect from a Black Lion product. In Black Lion “mod” tradition, they designed their own: the T4BLA!

The heart of all optical compressors.

At the center of any T4b lies an electroluminescent (EL) panel and a pair of photocells. Extensive testing showed that the EL panel acts similar to a capacitor and therefore the size of the panel affects the function of the Optocell itself. Black Lion Audio has spent a incredible amount of time experimenting and tuning the electrical characteristics to acheive the absolute best setup for optocell performance. Black Lion Audio even designed their own optocell tester, making sure that all optocells conform to their strict quality control. This makes for an incredible consistency, which is perfect for matching the response between multiple optical compressors.

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: 43513100399

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Robin Babcock
Houston, US
★★★★★ 5
Perfect fit
Size: 8.26" x 5.63" x 2.24"
A little difficult to access but the University of YouTube helped with that. Filter fit perfectly.
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Reviewed in the United States on May 27, 2026
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R D K
Charlottesville, US
★★★★★ 4
Easy replacement
Size: 8.26" x 5.63" x 2.24"
Reasonable price
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Reviewed in the United States on September 8, 2025
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William Abruzzo
New York, US
★★★★★ 5
Kona Air Filter
Size: 9.33" x 6.29" x 2.08"
Very satisfied, it fit perfectly!
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Reviewed in the United States on March 31, 2026
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rcevans
Cuba, US
★★★★★ 5
Engine air filters are important!
Size: 8.26" x 5.63" x 2.24"
Just like me and you breathing, your car performs better when it can breathe freely and cleanly. My philosophy with an engine air filter is to replace with cheap and often. You can't control the quality of air coming into your system but you can control the filtering, so I'd rather replace the filter on an accelerated schedule with a cheap product than to invest into something more expensive and have it perform dirty for longer than it should. For my Honda CRV 2024 Hybrid, this filter fits snuggly and performs well.
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Reviewed in the United States on December 1, 2025
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Philip W Carroll
Lowell, US
★★★★★ 5
All the right windshield blades in 1 box
Size: 26"17"12"
Fit and work well on my wife car, nice quality for the value cost. Shipping was great and it is ok to save boxes and ship in original manufacturer box. Easy to use and install as replacement blades.
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Reviewed in the United States on April 23, 2026

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