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.
The original use of this unit is between the Guitar and “Normal” input of early Vox AC30s to improve the Tone and Overdrive characteristics by adding some “Dirt” and “Bite” to this low gain type of amp.
The TB-83 EXTRA is also a valuable addition to many other guitar/amp combinations.
The bypass footswitch may be used to completely disconnect the TB-83 EXTRA from the guitar/amp circuit. The TB-83 EXTRA output volume control may be used to reduce the amount of boosted signal, when switched on, presented to the amp input.
The input to the TB-83 EXTRA can be controlled by the guitar volume control so use of the guitar and TB-83 EXTRA volume controls together can make a huge difference in performance to suit your application.
The gain before clip point is +36dB (63.2X) and the maximum output of the TB-83 EXTRA™ is 7v P/P (=10dBm). The measured output noise with a 10Kohm source impedance is -82dBm giving a signal to noise ratio of 92dB.
This pedal is very lightly used, and we'll ship it to you super fast and super safe in its original box! Feel free to give us a call with any questions you may have about it!