Deep Blue Delay

The Mad Professor Deep Blue Delay is a natural sounding digital/analog delay pedal with an analog direct signal path. It is designed to provide vintage warmth and ambiance, similar to that of a vintage tape echo. The pedal is compact, with dimensions of 69mm x 111mm x 50mm including jacks and knobs.

Key features and specifications include:
- Controls: The pedal features Delay Time, Delay Level, and Repeat controls.
- Electrical Specifications:
- Current consumption: 32mA at 9VDC
- Voltage range: 8V to 15V (below 7.5V delay signal will be muted)
- Input impedance: 180K ohms
- Output drive capability: 10K ohms
- Maximum input voltage: 2V peak 650 mV rms
- Signal to noise ratio: 80 dB
- Delay time approximately 25 ms to 450 ms
- Power requirement supplied via 2.1 mm DC socket
- Input and output connections via 1/4” phone jack
- Complete bypass and input of circuit grounded when in bypass
- Power requirements: 6F22 9V battery or DC eliminator 2.1 mm plug center negative and positive sleeve

The Deep Blue Delay is specifically designed to work well with distorted tones and can be used before or after distortion. It is suitable for clean sounds as well, offering a carefully tuned delay tone with attention to the first critical reflection and repeat decay.

The pedal's digital construction makes it compact, stable, and virtually service-free, allowing for desired bandwidth and distortion levels without the limitations of analog construction. The delay medium offers a bandwidth similar to classic tape echo units and can be used in front of an amplifier or in amplifier effects loops.