Three classic Tube Screamers in one!
Formula B’s That Screamer Overdrive Pro 4558 packs the legendary sounds of three iconic Tube Screamers (TS808, TS9, and TS10) into a single, versatile pedal.
This meticulously crafted overdrive is built for players seeking everything from classic midrange crunch to glassy blues tones and subtle low-gain boosts reminiscent of John Mayer’s signature sound.
At the heart of That Screamer lies a careful recreation of the original circuits found in the 1981 TS808, 1982 TS9, and 1986 TS10.
Formula B not only faithfully reproduced these circuits but also enhanced the dynamics and added 5dB of extra output volume.
Inside, you’ll find premium components, including tantalum capacitors, bipolar electrolytic capacitors, and the coveted JRC4558D op-amp paired with rare Japanese-made MA150 clipping diodes—all contributing to its rich, authentic tone.
What sets That Screamer apart is its internal switching system, allowing you to select between the three Screamer voicings.
With two internal switches, you can explore TS808 warmth, TS9’s aggressive bite, or TS10’s unique character—or even combine TS808 and TS10 modes for a distinct tonal blend.
Whether you’re after bluesy breakup, Plexi-like grit, or a clean boost to push your amp, That Screamer has you covered!
Formula B That Screamer Overdrive Pro 4558 features:
• Faithful recreations of the TS808, TS9, and TS10 Tube Screamers.
• Internal switches let you select and combine different Screamer voicings.
• Features the original JRC4558D op-amp and rare MA150 clipping diodes.
• Enhanced dynamics with over 5dB of extra output volume.
• Controls: Drive, Tone, Level.
• True bypass switching for transparent tone preservation.
• Power: 9V DC.
• Current Draw: 10mA.
• Dimensions: 4.76" x 2.60" x 1.57".
Specs
| Type | Overdrive |
| Condition | New |
| Power | 9V DC |
| Current Draw | 100mA |
| Power supply included | No |
| Country of Origin | Italy |
FREE SHIPPING
- Free shipping within Canada.
- Free shipping to the USA.
- Free shipping on international orders over 520$.
Visit the Shipping page for more.
Fast Delivery
- Canada : 1 - 2 business days
- USA : 1 - 2 business days
- Rest of the world: 3 - 5 business days.
Hassle-Free Returns
You have 45 days to test your new gear. If you choose to return it, we’ll send a full refund. It’s that simple: no bogus restocking fees or charges.
Visit the Returns page for more.
Frequently Asked Questions
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How can I tell if an item is in stock? +
Each product page shows an availability status.
• In stock items are ready to ship.
• Out of stock items are currently unavailable.
You can enter your email to be notified when an item is back in stock.
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Where are you located? +
We’re based in Blainville, Quebec, Canada.
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When will my order ship? +
Orders placed before 12 PM EST ship the same business day.
Tracking details are sent shortly after purchase.
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How much does shipping cost? +
Most orders ship free to Canada and the US.
International orders ship free on purchases over $520 CAD.
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Which shipping methods do you use? +
Orders ship via UPS Expedited by default.
For faster delivery, you can select UPS Express Saver at checkout.
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How long does shipping take? +
Typical delivery times are:
• Canada: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• USA: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• International: 3–5 business days with UPS Expedited, 2–3 business days with UPS Express Saver
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Which payment methods do you accept? +
We accept all major credit cards and PayPal.
Financing options are available through Klarna and RBC PayPlan.
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Do Canadian customers pay sales tax? +
Yes. Sales tax is applied based on your province of residence:
• Alberta: 5%
• British Columbia: 5%
• Manitoba: 5%
• New Brunswick: 15%
• Newfoundland and Labrador: 15%
• Northwest Territories: 5%
• Nova Scotia: 14%
• Nunavut: 5%
• Ontario: 13%
• Prince Edward Island: 15%
• Quebec: 14.975%
• Saskatchewan: 5%
• Yukon: 5%
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Do USA customers pay import fees? +
Yes. Starting August 29, 2025, all US-bound shipments will be subject to duties, taxes, and brokerage fees.
These charges are determined by US Customs and collected by UPS at delivery.
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Do international customers pay import fees? +
Yes. International shipments may be subject to duties and taxes.
These charges are set by the destination country’s customs authority and collected by UPS at delivery.