SKU: 30124553547

Pete Cornish TB-83 Extra Duplex Treble Boost

Sale price$449.55 Regular price$499.50
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Description

Pete Cornish TB-83 Extra Duplex Treble BoostMaker: Pete Cornish Model: TB 83 Extra Duplex Condition: New Description: The TB 83 Extra Duplex combines two of our TB 83 Extras in one pedal to give you flexibility and different tonal colors to play with. Set each one to different volumes to give two different degrees of boost and then combine them to obtain up to double the gain of each individual effect. This is the second Pete Cornish Treble Boost designed and built by him from the early 1970s

Maker: Pete Cornish

Model: TB-83 Extra Duplex

Condition: New

 

Description:

The TB-83 Extra Duplex™ combines two of our TB-83 Extras™ in one pedal to give you flexibility and different tonal colors to play with. Set each one to different volumes to give two different degrees of boost and then combine them to obtain up to double the gain of each individual effect.

This is the second Pete Cornish Treble Boost designed and built by him from the early 1970s and still in production. It is one of the original versions supplied to Brian May and can be heard on Queen recordings. Pete is still using the same artwork for the circuit board and identical components are sourced from the original suppliers. Each pedal is individually hand made by Pete and Lynda Cornish from the etching of the circuit board through to the testing of the finished unit. No other person is involved in the production.

The TB-83 EXTRA™ was designed to compliment the already in-line TB-83™; for solos and other artistic reasons the TB-83™ boost was required to be louder and with more “bite” to bring it above other instruments in the live or recorded mix. There are two ways in which the TB-83™ and the TB-83 EXTRA™ may be connected to bring out this extra benefit:

1) Guitar into TB-83™ in; TB-83™ out to TB-83 EXTRA™ in; TB-83 EXTRA™ out to amp in. TB-83 EXTRA™ volume control may be used to match the   level when the TB-83 EXTRA™ is engaged and the additional treble boost will allow you to “cut through” the mix.

2) Guitar into TB-83 EXTRA™ in; TB-83 EXTRA™ out to TB-83™ in; TB-83™ out to amp in. The TB-83 EXTRA™ volume control now has a completely different function: it allows complete control over the “drive” into the TB-83™ input with a huge range of different sustain and harmonically rich distortion products. The overall volume, however, will remain virtually constant but the new singing tone will delight and excite you.

1) The TB-83™ was originally designed to be the interface between Burns Tri-Sonic pickups and the “Normal” input on vintage (pre Treble Boost) Vox AC30 amplifiers.


2) Each TB-83 is individually numbered, signed and dated internally which provides full traceability and history.

3) Due to the modular design of the TB-83™ all parts are replaceable if they become damaged. Please contact us if you wish to purchase replacement parts.

4) The active circuitry is potted in semi-flexible resin as vital protection: a) against environmental conditions which can cause unwanted changes to the electronic circuitry and b) to eliminate the possibility of microphonic feedback that can occur when high gain devices are used in close proximity to amplifiers at full volume. Glass fibre PCBs are prone to resonant vibrations and our use of dense potting material increases the mass of the circuit board to place any possible resonances outside the audio frequency spectrum.

5) The maximum output of the TB-83™ is +10dBm and the measured output noise with a 10Kohms source impedance is -82dBm giving a signal to noise ratio of 92dB.

6) Battery life: current consumption is low (approximately 540μA) and the supplied Duracell “Procell” MN1604 should last up to 500 hours before noticeable loss of signal occurs. When it is apparent that the battery requires replacement remove the four Pozidrive #2 screws from the base plate, unclip the battery (noting carefully how the battery is located in the case) and fit the new one. Take care not to trap the battery wires under the base plate when it is reinstalled.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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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]
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SKU: 30124553547

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The Pacific Northwesterners
Alexandria, US
★★★★★ 4
Comfortable and Easy to Wear Daily
Size: 2 Little Kid, Color: Navy/Blue
My daughter has been wearing these navy/blue shoes since the weather has been less rainy and more sunny. They are great for outdoor play, especially on days when it's warm outside. The knit mesh upper keeps her feet from overheating, and the cushioned insole feels supportive without being stiff. At size 2, the fit is accurate and the width runs a bit roomy, which gave her some growing room without feeling loose. The slip-on design with elastic laces and pull tabs is a real plus. She can get them on and off without any help, which she loves. The shoes are light enough that she barely notices them during long active days. My one small complaint is that the sole feels more like firm foam than rubber, so they can be a little slippery on smooth indoor floors. For the price, these deliver solid everyday value. They look good, hold up well to regular use, and my daughter reaches for them first most mornings. Pros: - Breathable mesh keeps feet cool - Easy slip-on design with elastic laces and pull tabs - Lightweight and comfortable for all-day wear - Accurate sizing with a roomy width - Durable for the price Cons: - Sole can be slippery on hard smooth surfaces - Limited outsole grip compared to rubber-soled shoes
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Reviewed in the United States on June 1, 2026
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DR
Whiting, US
★★★★★ 5
Great kids' shoe — easy on, comfy all day
Size: 3 Little Kid, Color: Pink/Lavender
My kid has been wearing these for a few weeks now and I'm genuinely impressed with how well they've held up. The knit mesh upper keeps feet cool and comfortable during long days at school and outdoor play, and the cushioned EVA midsole does a great job absorbing impact. What really won me over is the slip-on design with elasticated laces and dual pull tabs — my child can put them on and take them off completely independently, which is a huge win. The fit is snug but not tight, and they run a bit roomy in width, which is great for kids with wider feet or those who need a little growing room. At $32, the quality feels solid for the price. Lightweight, breathable, and easy to wear — these check all the boxes for an everyday kids' shoe.
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Reviewed in the United States on May 23, 2026
M
Melissa
Charlottesville, US
★★★★★ 5
Cute, Comfortable, Light-Weight Shoes, Perfect for School
Size: 11 Little Kid, Color: Pink/Lavender, Size: 11 Little Kid, Color: Pink/Lavender
These have turned out to be great everyday shoes for my 5 year old. She normally wears a size 10, but since that size wasn’t available, I ordered the 11 expecting her to grow into them. I was pleasantly surprised that they already fit her pretty well. There’s still a little extra room in the toe area, but the shoes fit securely around her ankles so they don’t feel loose or slip off while walking or playing. She says they’re very comfortable and loves how easy they are to slip on by herself. The lightweight design is nice for everyday wear, and they’ve held up well so far despite being worn almost daily. They've become her favorite shoes to wear! Also the pink/lavender color is really pretty in person. Overall, I’m very happy with them and would order again.
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Reviewed in the United States on May 13, 2026
A
Amazon customer
West Palm Beach, US
★★★★★ 5
Great shoe well made
Size: 13 Little Kid, Color: Pink/Lavender, Size: 13 Little Kid, Color: Pink/Lavender
Really good shoes at a fair price. My daughter loves the pink and purple gradient colors. Really beautiful. Shoes have proven themselves very durable. She's been wearing these a few times a week for the last couple months and they still look new aside from some dirt stains. Fit perfectly. Very comfortable. This is always her first pick in the morning when she's getting dressed. Good breathability you can wear these in hot summer weather without sweaty feet. Versatile shoe looks good enough to wear out and about or exercise in.
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Reviewed in the United States on May 16, 2026
K
Verified Purchase
Kevin Keegan
Carnegie, US
★★★★★ 3
Runs large
Size: 7 Big Kid, Color: White
Runs very large.
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Reviewed in the United States on June 5, 2026

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