Mad Professor

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BJF Design Ambient Delay Pedal - Hand-Wired in Finland

The Deep Blue Delay HW is the original Hand-Wired version of Mad Professor's highy-regarded and widley praised analog/digital delay. For those who appreciate the absolute finest quality in the guitar gear they purchase, we recomend the hand-wired version!

Deep Blue Delay (DBD) is a natural sounding digital/analog delay, with analog direct signal path. The DBD has about the same bandwidth as the classic tape echo units, and it can be used in front of an amplifier or in amplifier effects loops. There are no noise reduction circuits, which keeps decay of echo as natural as possible. The direct signal path is short and made with analog amplifiers with no filtering. There should be no distortion or tone coloration as long as input level is in range below maximum allowed.

The echo signal has a tuned filtering to allow extreme settings without interference. The delay is specially designed to work well with distorted tone, as this is the most critical application, where delays often fail. You can use the pedal before or after distortion. As such, it will work exceptionally well on clean sounds where requirements are less stringent, especially in terms of echo bandwidth and repeat formation.

The delay tone has been carefully tuned with lot of attention to the first critical reflection and how the repeats decay. Deep Blue Delay is kept small (Width x Length x Height :69mm x 111mm x 50mm including jacks and knobs) containing just the basic delay features; Delay Time, Delay Level and Repeat controls. It was designed to work as an ambience delay; like that of a vintage tape echo and the repeat formation was specifically designed to allow easy setting and less critical setting of delay time. With delay times higher than 120ms, the delay time is sometimes set on the beat or on a multiple of the beat. Deep blue handles this by not giving full range repeats, but a tuned response that don’t need to be on the beat to sound good.

Why digital? Isn't Analog better for a solid-state solution?

Well, in many ways, the delay medium is less critical and it could be an oil-drum, tape, metal-thread, analog BBD or digital, but the final sound is always set by the limitations of the delay medium and the peripheral circuitry needed to make either work. We chose Digital construction to make it compact, stable, with reasonable delay time and virtually service free, where the limitations of the circuit would be less critical. As an outcome, you can set the peripheral circuitry with desired bandwidth and distortion levels with less consideration on the exact limits of the delay medium, while of course always pushing the limits, as with anything musical.

A similar circuit in analog form would be excessively more expensive to make. For the same performance, it would require three to four of the best BBD chips now only available as vintage parts and the size of the pedal would have to be about three times the current size.

Controls

• LEVEL: Sets the level of delayed signal mixed with straight guitar tone, fully CCW there is only straight (un-effected) guitar signal heard and fully CW gives the loudest delay.
• DELAY: Controls the delay time from 25ms (fully CCW) to 450ms (fully CW)
• REPEAT: Controls the repeats of the delay signal, fully CCW gives one repeat and at fully CW you get infinite feedback.

Electrical specifications

• Current consumption: 25 to 32 mA depending on delay setting
• Voltage range: 8V to 15V (below 7,5 V delay signal will be muted)
• Input impedance IZ: 180K Ohm's
• Output drive capability: 10K Ohms
• Maximum input voltage: 2V peak 650mV rms
• Signal to noise ratio: 80dB
• Delay time: approximately 25mS to 450mS
• Power requirement: supplied via 2,1 mm standard jack
• Input and output connections: via 1/4" Switchcraft
• Complete bypass and input of circuit: grounded when in bypass

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BJF design ambient delay pedal

Deep Blue Delay (DBD) is a natural sounding digital/analog delay, with analog direct signal path. The DBD has about the same bandwidth as the classic tape echo units, and it can be used in front of an amplifier or in amplifier effects loops. There are no noise reduction circuits, which keeps decay of echo as natural as possible. The direct signal path is short and made with analog amplifiers with no filtering. There should be no distortion or tone coloration as long as input level is in range below maximum allowed.

The echo signal has a tuned filtering to allow extreme settings without interference. The delay is specially designed to work well with distorted tone, as this is the most critical application, where delays often fail. You can use the pedal before or after distortion. As such, it will work exceptionally well on clean sounds where requirements are less stringent, especially in terms of echo bandwidth and repeat formation.

The delay tone has been carefully tuned with lot of attention to the first critical reflection and how the repeats decay. Deep Blue Delay is kept small (Width x Length x Height :69mm x 111mm x 50mm including jacks and knobs) containing just the basic delay features; Delay Time, Delay Level and Repeat controls. It was designed to work as an ambience delay; like that of a vintage tape echo and the repeat formation was specifically designed to allow easy setting and less critical setting of delay time. With delay times higher than 120ms, the delay time is sometimes set on the beat or on a multiple of the beat. Deep blue handles this by not giving full range repeats, but a tuned response that don’t need to be on the beat to sound good.

Why digital? Isn't Analog better for a solid-state solution?

Well, in many ways, the delay medium is less critical and it could be an oil-drum, tape, metal-thread, analog BBD or digital, but the final sound is always set by the limitations of the delay medium and the peripheral circuitry needed to make either work. We chose Digital construction to make it compact, stable, with reasonable delay time and virtually service free, where the limitations of the circuit would be less critical. As an outcome, you can set the peripheral circuitry with desired bandwidth and distortion levels with less consideration on the exact limits of the delay medium, while of course always pushing the limits, as with anything musical.

A similar circuit in analog form would be excessively more expensive to make. For the same performance, it would require three to four of the best BBD chips now only available as vintage parts and the size of the pedal would have to be about three times the current size.

Controls

• LEVEL: Sets the level of delayed signal mixed with straight guitar tone, fully CCW there is only straight (un-effected) guitar signal heard and fully CW gives the loudest delay.
• DELAY: Controls the delay time from 25ms (fully CCW) to 450ms (fully CW)
• REPEAT: Controls the repeats of the delay signal, fully CCW gives one repeat and at fully CW you get infinite feedback.

Electrical specifications

• Current consumption: 25 to 32 mA depending on delay setting
• Voltage range: 8V to 15V (below 7,5 V delay signal will be muted)
• Input impedance IZ: 180K Ohm's
• Output drive capability: 10K Ohms
• Maximum input voltage: 2V peak 650mV rms
• Signal to noise ratio: 80dB
• Delay time: approximately 25mS to 450mS
• Power requirement: supplied via 2,1 mm standard jack
• Input and output connections: via 1/4" Switchcraft
• Complete bypass and input of circuit: grounded when in bypass

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BJF design high headroom overdrive with adjustable low/mid EQ balance

Premium quality classic blues/rock pedal that works very well with complex overdriven amp sound.

It's a low compression, high headroom overdrive with high output, and it has a Body knob for adjusting low-mid content and treble.

The LGW was made to be a stackable overdrive that could go anywhere in the pedal chain and the compression normally associated with this type of circuit is reduced same as several distortion mechanisms.

This pedal will work very well with amps and other pedals that have a lot of complexity or compression, a situation that not all pedals work well.

LGW makes a great building block to sound yet it works standalone and especially with humbuckers where normally this type of circuit would not work satisfactory, much due to bass loss and sometimes separated sounds (where transients feed through and a cloud of distortion follows beneath.

Body control gives access to medium midhump at center position and allows treble boost at cw rotation and low mid/treble boost a ccw position and so unit also can provide distortion albeit a smooth type. LGW can be used as an overdrive to already distorting amplifiers or pedals downstream, as well as function as a filter when feed with fuzz pedals that may be rough on some amplifiers and can also be used as light overdrive for just breaking up sounds.

As designer Bjorn Juhl put it:
"Whereas Little Green Wonder is a TS-style pedal, but one for those who don't generally like TS-style pedals.
Big difference between these two pedals would be headroom, distortion style and distortion depth and treble response, output level, function of tone knob, color, symbol.... they do share a common layout of mechanical components."

Electrical specifications

• Z in at 1kHz: app. 500K
• Pout 1kHz in 50k: app. 0uW70 RMS
• Max load: app. 10K
• Max output: 3V peak
• Max current consumption: 5mA5 at 10V
• Upper freq. -3dB: app. 10KHz
• Max gain at 1KHz: app. 58 dB
• Max input signal: 3V peak
• Supply Voltage range: 7V5-18V

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BJF design distortion pedal for guitar

The new Mad Professor - Stone Grey Distortion (SGD) is a modern high-gain distortion pedal with unparallelled clarity and definition.

This pedal was developed for high gain applications and specifically for clarity at heavy distortion levels.

The Stone Grey Distortion is unique in that it has razor sharp dynamics and high gain intensity. It's ready for drop tuning, 7 string, and modern rock players who are seeking extreme gain with intense "string to string definition".

Play a chord and hear each note distinctly, instead of it turning to "mush" like many other high gain pedals.

With the gain turned down, the Stone Grey Distortion approaches overdrive-like textures and responds to the player's touch and dynamics like our other Mad Professor pedals do.

Build the Mad Professor way: small footprint and big tone.

Controls

• VOLUME: sets the output level of the distorted signal
• DISTORTION: sets the level of distortion - lower levels more overdrive-like textures - higher with heavier distortion.
• TONE: sets the critical treble response for use with various amplifiers.

Electrical Specifications

• Input impedance: approximately 500K Ohm's
• Recommended output load: 50K Ohm's or higher
• Current consumption: @ 9V DC approximately 8mA
• DC supply voltage range: 7,5- 15V
• True bypass

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BJF design high gain distortion pedal

MRD is a high-gain distortion pedal, which was modelled after the 80's style compressed gain sounds. It is extremely easy (and lot of fun) to play, because its texture is adjusted to give clarity and definition also at heavy distortion. Gain range allows also low distortion sounds as well as stacking with other pedals, where an overdrive (preferably MP LGW) can pre-drive MRD for extreme and highly focused sounds. To get these gain levels with their impressive signal to noise ratio, we didn't use any noise gate or expander. Instead, we used special amplifier techniques and extreme low noise amplifier stages, which result in a natural decay and a rather high current consumption for a distortion pedal in view of battery operation.

MRD has that 80's sound many have longed for but never got before at such low noise levels and versatility. The Presence control was designed to control the upper treble, but not to affect the upper midrange, so that you can get the exact treble you desire. You can master anything from fat warm singing distortion to screaming cutting leads with the MRD's Presence control.

Step into your spandex trousers and plug in the Mighty Red Distortion pedal!

Controls

• VOLUME: Sets the level of distorted signal
• DISTORTION: Controls the amount of distortion
• PRESENCE: Controls upper treble, while not affecting the upper midrange so you can adjust tones from warm and sweet into cutting leads with an attitude.

Electrical specifications

• Supply voltage range: 7,5 to 18VDC
• Current consumption at 9VDC: 10,6 mA
• Max gain: 62dB
• Max output: 1V pk-pk or 500mV rms
• Signal/Noise ratio: approximately 96dB
• Complete bypass (true bypass)

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BJF design versatile fuzz pedal - Hand-made in Finland premium quality fuzz pedal.

Mad Professor Fire Red Fuzz (FRF) is a fuzz pedal that is easy to play with long sustain and lot of tone variations.

The pedal has a compressed, deep effect to allow equal sustain throughout the fretboard.

Tone control was specifically designed to allow tones from mellow fuzz, through slight midcut to thin bright fuzz

The FRF is not another variation of a classic fuzz design but an unique pedal with its own character and extremely versatile Tone control.

It is great for recording different layers of Fuzz tones from haunting dark to cutting thin bright.

What ever setting you use the tone is always very musical and controllable.

Like all Mad Professor pedals FRF is hand made in Finland using only premium components, to give years of trouble free operation with superb musical tone.

Controls

• VOLUME: Sets the level of distorted signal
• FUZZ: Controls fuzz depth from just slight to heavy fuzz
• TONE: controls EQ of fuzzed sounds: mellow to CCW rotation, slight midcut in mid position and thin fuzz to fully CW rotation.

Electrical Specifications

• Supply voltage range: 7,5 to 18VDC
• Current consumption at 9VDC: 2,5 mA
• Input inpedance: 52K Ohm's
• Output impedance: 50K Ohm's
• Complete bypass (true bypass)

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BJF design guitar and bass Auto Wah/ Voltage Control Filter pedal

This is Mad Professor's new CB or Circuit Board version of their Snow White Auto Wah. Much less labor intensive to build versus the original hand-Wired Snow White, this new CB version is the perfect Auto Wah for those who have dreamt of owning this amazing Mad Professor pedal, but whose budget couldn't be stretched to the $350.00 Hand-Wired, version built in Finland

The SNOW WHITE AUTOWAH (SWAW) circuit is based on a 1991 BJF rack mount remote wah circuit and is tuned like a real wah. The circuit was redesigned with envelope controls and built into small size pedal. It has very fast tracking and accuracy rarely found on auto wahs/ envelope filters. With the four knobs you can have total control of the effect. SWAW works both with guitar and bass and you can fine-tune the pedal to suit your instru-ment, your playing style and your taste of tone.

The pedal has a unique decay control for the filter frequency fall speed. You can set it to be fast for wah effects on every note, or slower for a more traditional auto wah sound.

Controls

• SENSITIVITY: Sets the filter trigger level, tune this carefully to fit your guitar/bass output and your playing touch.
• You can further change the sensitivity from your guitar volume knob while playing.
• BIAS: Controls the filter resonance frequency. When Sensitivity is turned fully off the Bias can be used as a sweepable filter.
• RESONANCE: Controls the sharpness or Q-factor of the filter.
• DECAY: Controls how fast the filter frequency falls back to resting point (that is set with the Bias control). This can be set fast (CW) so you get the wah effect on every note or slow for a more traditional auto wah sound.
• PLAYING:Please take time to get used to the controls and as this is a voltage control filter it will react to your playing touch. The envelope control circuit is carefully designed to follow the dynamics of guitar/bass and it might take some time to master the Auto Wah playing technics.
  Try also adjusting guitar volume between 8 and 10 to further expand use.

Electrical Specifications

• Supply voltage: 9VDC
• Current consumption at 9VDC: 15mA
• Input inpedance: 500K
• Output impedance: 1K
• Max input -20dBV
• Complete bypass (true bypass)

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BJF design fine-tuned overdrive pedal - Hand-made in Finland premium quality overdrive pedal.

Mad Professor Sky Blue Overdrive (SBOD) is a very unique four knob pedal designed to overdrive already distorted amplifiers as well as provide light overdrive or soft distortion on clean sounds.
Special feature on this pedal is that you can adjust the feel and dynamics with Texture and Z knobs.

The Texture allows changing how and when circuit distorts as well as adjusting overall EQ.

The Z is a control that creates an adjustable load to the instrument connected to the SBOD input. With standard passive pickup loaded guitars dialing this control will adjust the upper resonant peak of the pickups. It also affects the taper of the volumecontrol on the guitar, adjusting how the tone cleans up when using the guitar volume knob.

Like all Mad Professor pedals SBOD is hand made in Finland using only premium components, to give years of trouble free operation with superb musical tone.

Controls

• VOLUME:sets the output volume of the effect
• DISTORT.: controls the distortion or overdrive effect
• Z: is a control that creates an adjustable load to the instrument connected to the SBOD input. With standard guitars dialing this control will adjust the upper resonant peak of the pickups and also affect the taper of the volumecontrol on the guitar for easy setting of clean to distorted just from the volume control of guitar. This effect is masked if SBOD is driven by a buffered output such as from another guitar pedal or from active pickups
• TEXTURE: allows changing how and when the circuit distorts as well as adjusting overall EQ. Dialing this control appears to adjust midrange, while it gives this impression from adjusting compression. Turning CCW gives more saturated effect that is easily distorted, turning CW gives a slight treble boost and less compression (compression is used here to describe density of distortion since overall sound may be distorted throughout the dial)
  

Electrical Specifications

• Supply voltage range: 7,5 to 18VDC
• Current consumption at 9VDC: 5 mA
• Input inpedance: 227K TO 10kOhm's (adjustable with the Z-control)
• Output impedance: 251K Ohm's
• Complete bypass (true bypass)
  

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BJF design dynamic overdrive pedal

Mad Professor Sweet Honey Overdrive (SHOD) is a super touch sensitive medium gain overdrive pedal. This pedals is now offered as lower priced pcb-model or hand wired pedal. Both share the same specs and tone. It is designed to overdrive distorted amplifiers and give dynamically controlled light overdrive on clean sounds. Distortion level can be controlled by pick attack and pickup strenght. Harder picking for overdrive and softer for cleaner tone.

With the unique Focus control you can adjust the feel and dynamics of the pedal as well as overal EQ. Turning Focus CCW you need to play harder to get distortion and the tone is softer, great for jazz and blue. Focus turned CW gives a slight treble boost and earlier distortion.

This type of overdrive has previously only been found in the BJF Honey Bee but is now presented in Mad Professor version. The Mad Professor SHOD has a tighter sound and is more versatile as it was designed to work with all kinds of guitars and amplifiers.

This versatile pedals stacks well with all kind of other pedals and suits for huge variety of different music styles.

Controls

• VOLUME: sets the output volume
• DRIVE: controls the amount of overdrive.
• FOCUS: Controls how easily the circuit distorts as well as adjusting overall EQ. Turning CCW gives less distortion and a mellow effect, turning CW gives a slight treble boost and earlier distortion. Good starting point is 11 o’clock.

Electrical Specifications:

• Supply voltage range: 7,5 to 18VDC
• Current consumption at 9VDC: 5 mA
• Input inpedance: 260K
• Output impedance: 25K Ohm's
• Complete bypass (true bypass)

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BJF design dynamic overdrive pedal - Wired by Hand in Finland

Mad Professor Sweet Honey Overdrive (SHOD) is a super touch sensitive medium gain overdrive pedal. This pedals is now offered as lower priced pcb-model or hand wired pedal. Both share the same specs and tone. It is designed to overdrive distorted amplifiers and give dynamically controlled light overdrive on clean sounds. Distortion level can be controlled by pick attack and pickup strenght. Harder picking for overdrive and softer for cleaner tone.

With the unique Focus control you can adjust the feel and dynamics of the pedal as well as overal EQ. Turning Focus CCW you need to play harder to get distortion and the tone is softer, great for jazz and blue. Focus turned CW gives a slight treble boost and earlier distortion.

This type of overdrive has previously only been found in the BJF Honey Bee but is now presented in Mad Professor version. The Mad Professor SHOD has a tighter sound and is more versatile as it was designed to work with all kinds of guitars and amplifiers.

This versatile pedals stacks well with all kind of other pedals and suits for huge variety of different music styles.

Controls

• VOLUME: sets the output volume
• DRIVE: controls the amount of overdrive.
• FOCUS: Controls how easily the circuit distorts as well as adjusting overall EQ. Turning CCW gives less distortion and a mellow effect, turning CW gives a slight treble boost and earlier distortion. Good starting point is 11 o’clock.

Electrical Specifications:

• Supply voltage range: 7,5 to 18VDC
• Current consumption at 9VDC: 5 mA
• Input inpedance: 260K
• Output impedance: 25K Ohm's
• Complete bypass (true bypass)

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BJF design music tremolo pedal - Hand-made in Finland premium quality tremolo pedal.

Mad Professor Mellow Yellow Tremolo (MYT) is a true sine wave tremolo effect designed for tremolo tones from the of 50's type soft swing to deep modulation with great playability, regardless of tremolo depth or speed.

Strength of incoming signal is modulated by a sinusoidal oscillator, just like in the early amps, and modulation bias is set to give symmetrical modulation. This gives a very musical tremolo effect that blend very well with both clean and distorted guitar tones. The MYT has a level control that allows you to even boost the signal for a more powerful effect.

Like all HW Series Mad Professor pedals MYT is hand-made in Finland using only premium components, to give years of trouble free operation with superb musical tone.

Controls

• SPEED: controls the speed of modulation
• DEPTH: controls the depth from barely noticeable to almost full on/off
• LEVEL: is primarily meant to balance level effect on and off- sometimes you need to have a slight boost because the tremolo effect cuts density of sound through pulsating

Electrical Specifications

• Supply voltage range: 7,5 to 15VDC
• Current consumption at 9VDC: 5,5 mA
• Input inpedance: 340K Ohm's
• Output impedance: 1K Ohm's
• Complete bypass (true bypass)