Unit 5, Silveroaks Farm, Hawkhurst Lane, Waldron, Heathfield, E.Sussex, UK, TN21 0RS
Tel (0)1435- 813393, International +44 1435 813393
VAT Reg. No. GB 241 7291 72






Originally designed as an integral part of each Pete Cornish Custom Pedalboard and Rack Systems, the double buffered  NB-3 allows a boost in volume, without any tonal alteration.

The footswitch on this unit is not a bypass switch; when the indicator light is OFF the NB-3™ acts as a unity gain buffer amplifier with high signal level capability and can drive long cables without tone or signal loss.

When the indicator light is ON your pre-selected amount of boost (up to +30dB) will be available at the output of the unit. There is no tonal change or phase shift to the boosted signal. When used as the final effect, just before the amp input, the NB-3™ will give an instant increase in signal level, including the outputs of any preceding effects. Used with a clean amp the NB-3™ provides a pure volume increase and when used with an overdriven amp the extra signal will take your amp to a new level of overdrive. An alternate use is to connect your instrument to the NB-3™ input: it will then enable 1) the NB-3™ to provide line driving and load isolation from the effects chain and 2) enable an instantly switchable increase of instrument signal level which may be useful for enhancing tone or overdrive into following effects. Please ensure following effects will not be damaged by the increased signal drive.


Dual purpose: Line Driver and Linear Boost in one convenient package: compact size
100 X 120 X 36mm.

Each unit is hand built, wired and tested by Pete and Lynda Cornish.

Housed in a Rugged Die-cast box with a ‘Chicken-Head’ pointer knob.

Heavy Duty all-metal footswitch with daylight visible LED.

Easy battery replacement via a removable ‘drawer’. The battery is switched on when you insert the “INPUT / PWR ON” jack and to ensure long battery life unplug this lead when the unit is not in use. If the unit is not to be used for a long length of time we recommend that you remove the battery. Preferred battery type is MN1604.

Also fitted is an input for a DC adaptor: the size of the coax connector is 5.5/2.1mm and the center pin is negative (-VE). The adapter should be noise free, fully stabilized at 9V DC and capable of supplying 20mA. We recommend the use of Voodoo Lab Pedal Power 2 Plus adapter as meeting the above criteria and cannot accept any liability for damage caused to this unit by the use of, or to, any other type of DC adapter. An adapter proving an output of an AC voltage should NOT be used. If only a single unit is to be powered the BOSS PSA series may be more cost effective and is also recommended.


This unit is capable of being used with any stabilized, noise free supply voltage between 9Vdc and 24Vdc.

Using a 9.6vDC adaptor the performance will be identical to when Battery powered.

Using a fully smoothed and regulated AC/DC adaptor with an output voltage of 24vDC Maximum, and capable of supplying 20mA, the signal performance of the unit will be as shown below.

Please do not use an adaptor with a higher output voltage than the specified 24Vdc maximum, or of reversed polarity, as it may damage the NB-3™. An adapter with an AC voltage output should NOT be used, as it will permanently damage the NB-3™. Please ensure that the extra signal produced by the NB-3™ will not damage your effects or amplifier as any such damage, or the use of the incorrect adapter mentioned above will not be covered under the terms of our warranty.

SPECIFICATION (with 9vDC supply):

SPECIFICATION (with 24vDC supply):

Input Impedance                                    1 Mohm Input Impedance                                    1 Mohm
Minimum Output                                    2 Kohm Minimum Output                                    2 Kohm
Maximum Output                                   +10dBm/2.4Vrms/6.8 v P/P Maximum Output                                   +19dBm/7Vrms/20v P/P
Output Noise                                         -106dBm (10KHz B/W) Output Noise                                         -106dBm (10KHz B/W)
Frequency Response                              +/- 1dB 20 Hz to 32 KHz Frequency Response                              +/- 1dB 20Hz to 32KHz
Gain Range                                            0dB to +30dB Gain Range                                            0dB to +30dB


This unit has been built using the finest available components and constructed to the highest standards but should any fault occur during the twelve months from date of purchase please return it post paid to the above address where under guarantee repairs of any original manufacturing fault will be carried out (normal wear, misuse, unauthorized modifications or accidental damage excepted). The warranty will be voided if the guarantee labels are damaged or removed. This warranty does not apply to customer’s own equipment, which has been connected to this unit. This warranty is not transferable.

©Pete Cornish™ 2014  E. &O.E.