Madlab Noise-X (built from DIY kit)

Madlab Noise-X - digital synth that was built by me (fairly experienced builder) from DIY kit (have had no problems with it, but should note that a thorough reading of the manual is recommended - there are many features that can only be reached by selecting button combinations.) includes manual.

One 'odd design' note: the output is a 3.5mm jack, but it is actually a stereo jack, and the audio is actually only routed on one channel.

from the original description:
"A digital synthesiser that behaves more like an analogue synthesiser. Great for making sci-fi sound effects. Using a combination of sliders and rotary pots, a variety of atmospheric sounds can be created.

• 4 DCOs (digitally-controlled oscillators) + mixer
• pitch and amplitude LFOs
• waveforms - sine, square, triangle, rising sawtooth, falling sawtooth, pulse, noise
• frequency modulation and ring modulation
• delay line with feedback
• flanger
• user patch (non-volatile)"

has a battery connector and a 2.1mm power jack.