Frostwave Blue Ringer Ring Modulation Pedal

via this auction
"The Original FROSTWAVE Blue Ringer guitar pedal!

This is the prototype that Paul Perry made back in the early days before the production model you see today in their & other stores. All Frostwave production has halted for a while so get this while you can.

This pedal has controls for:
* gain on the main input (top left)
* gain on the main output (top right)
* wet/dry mix (top middle)
* frequency (big centre radio knob)
* an extremely sturdy on/off stomp switch

Inputs:
* Main
* Secondary / B input (for ring modulating one audio signal with any other of your choosing)
* Control Voltage (CV)

Output:
* Main

Case:
* Bulletproof (well bloody strong anyway) steel casing.

About the Blue Ringer
Bands such as Radiohead and countless others are putting ring modulation
into their recordings. Ring Modulation is a distinct incredibly versaltile effect that can be used creatively on almost any instrument.

One of the most classic examples is it's use as a vocoder like effect on voice.
The ring modulator was used as the voice of 'The Daleks' on the cult Sci-fi British TV show Dr Who.

The ring modulator uses an internal oscillator and balanced mixer to generate new harmonics that correspond to the sum and differences of the frequencies of the input signal and the local oscillator.

For example, if the input signal from a guitar or keyboard is 800 cps and the local oscillator is at 600 cps then the output will be two frequencies of 200 and 1400 cps. The level of the output signal tracks the level of the input, so the original signal is transformed into new frequencies.

The Blue Ringer has a balance control which allows the ratio of original signal and new harmonics to be varied. Thus, it is possible to have totally new harmonics or just to have a small amount of eg add a percussive edge to a keyboard sound.

By changing the local frequency - as the unit is operating - it is possible to change the generated frequencies in a unique way. This can be particularly effective with the lower notes of a drum machine.

Generate super intense tremolo! The Blue Ringer can be used as a high quality tremolo unit. In this mode, the balance control acts as a depth control and the frequency control adjusts tremolo speed.

Differences between this and the Blue RInger V2 from Frostwave:
No gain control for the second input and no MIC input. This pedal works either with an OSC or B input for modulation. It produces killer sound whether using it as a straight up ring mod or modding 2 of your own signals togther. The best example I herd using this was a bowed double bass ring modded with a sweet female vocal. Very cool & eerie audio result!"
via brian c.