The delay line itself is based around two 3207 bucket brigade delay (BBD) devices controlled
by a voltage controlled oscillator (VCO) running from around 33kHz to over 1MHz. Audio
bandwidth of the delayed signal extends to 14kHz and several unusual design features ensure
that the module is relatively quiet compared to other units of its type.
Two LEDs provide visual indication of the signal level being sent to the BBD devices. The
DRIVE control should be adjusted to ensure that the green LED remains lit for optimum
signal level. The red LED will light when the signal level is close to, or is, being overdriven.
The module will not be harmed when the signal is overdriven and there is a soft clipping
circuit in place to ensure the overdriven sound is musically useful. The DRIVE control allows
a variety of different signal levels to be used with the module although the expected signal
level would be expected to be between 0.5V(peak) and 8V(peak).
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