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





The BD-1™ is not a variant of any existing product but a completely new and original design.

Initially designed for Bass Guitar, the BD-1™ has also proved very popular with Baritone Guitars and dropped tuned Guitars when heavy overdrive is required at the lower frequencies of these instruments.
With Germanium components for added musicality this new design features full Bottom-End retention and is flat down to below the bottom B on five string basses. The tone controls are very powerful and feature an active boost and cut with a combined range of 34dB at maximum settings. Being active, the two tone bands can be both cut and boosted as desired with the zero or neutral point being 12 o'clock on each control knob. I have included a second fixed gain linear boost stage after the tone circuit to compensate for any reduction in overall volume when the tones are in "cut" mode.

The benefits of this active tone circuit, compared to the usual passive (Cut only) tone circuit is that the two bands are completely independent and there is no interaction between the Bass and Treble tone controls.
An output Master Volume is included to allow for perfect matching between bypassed and overdriven and EQʼd signal level and there is plenty of signal headroom available to overdrive amp inputs if required.
Our well established Class A input buffer and radio frequency suppressor is, of course, included and the output buffer impedance is low to easily drive long cables or other loads without loss of signal or tone.


Overall boost with Gain = 100% and Volume = 100% is +55 dB {Reference: input = -52dBm(V) and output = +3dBm
Overall boost with Gain = 0% and Volume = 100% is +19 dB {Reference: input = -16dBm(V) and output = +3dBm
The above with Bass and Treble set to 50% (Neutral point).
Bass Control range +16/-13dB @ 30Hz
Treble Control range +12/-18dB @ 3KHz
Maximum signal output with Volume 100% is  +10dBm(V)/ 2.5vrms/6v Peak to Peak (at clip point)

Dimensions: 171 X 121 X 55 mm / 6.75 X 4.75 X 2.2 inches


RFI rejecting input and bypass buffer.
Each unit is hand built, wired and tested by Pete, Lynda and Mingus Cornish.
Housed in a Rugged Die-cast box with lined control knobs.
Heavy Duty Custom made all-metal footswitch with large cap and protection ring plus Hi-Brite LED.
Easy battery replacement via a removable ʻdrawerʼ. The battery is switched on when you insert the "IN/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, or to be adapter powered, we recommend that you remove the battery. Preferred battery type is MN1604. Also fitted is an input for a DC adapter: the size of the coax connector is 5.5/2.1mm and the centre pin is negative (-VE). The adapter should be noise free, fully stabilised at 9V DC and capable of supplying 20mA. When multiple effects pedals are to be powered, we recommend the use of the 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 adaptor. If only a single unit is to be powered the BOSS PSA series may be more cost effective and is also recommended.


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, unauthorised modifications or accidental damage excepted). The warranty will be voided if the guarantee labels are damaged or removed. This warranty does not apply to customerʼs own equipment, which has been connected to this unit.

©Pete Cornish™ Partnership 2017