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
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Exchange/Return Notes
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SKU: 30124553547

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Eimile/ FrecklesNFantasy
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★★★★★ 5
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Size: Small, Color: Light Blue/White, Size: Small, Color: Light Blue/White
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MamaLlama
Lake Worth, US
★★★★★ 5
Soft, fit, and love the color
Size: XX-Large, Color: Slate Grey/White
I love how soft these are and the grayish-violet color. They seem well made and wash well- especially for the price. You can’t see through them. They are mid weight so they keep you warm enough for air conditioning and Florida cold. Probably not snow worthy or wind strength though. They are true to size if you want them to fit but not cling or act like leggings. They have just enough room. I bought the matching jacket but I’m more thrilled with just the pants. The jacket fits as it should but not over my too many milkshakes stomach.
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Reviewed in the United States on December 31, 2025
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S.dasola
Port Orchard, US
★★★★★ 4
Happy with purchase
Size: Medium, Color: Flamingo Pink/White, Size: Medium, Color: Flamingo Pink/White
Acceptable product. Good fit and fabric feels nice. A little see through if you squat and have on dark or patterned under pants but if you wear undies that are your skin color, there’s no issue at all. I wish they came in a length that was just past the calf. These are a little long to be on my top go to legging for yoga. Minus one star due to lack of length options.
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Kristen
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★★★★★ 5
Well made and comfortable
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Very cute and comfortable workout set! I bought the leggings and the matching sports bra sold separately. I am 5'4" , 125 lbs and bought a small in each. The leggings are tight but not too tight, doesn't dig in and doesn't roll down. Well made and thick material. Worked great for a very sweaty hot yoga class. I'll be buying more in different colors.
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Stephanie Allen
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