Two heavyweight explorers of sound and technology, Russell Haswell and Yasunao Tone, both undertaking separate rigorous experiments into the synthesis of sound and all its remits, converge for one helluva collaborative work. ‘Convulsive Threshold’ is the result of years of research and experimentation, Haswell’s systems of hybrid analogue/digital audio generation acting as one of the starting points for this relentess piece of material, which are then subjected to Tone’s MP3 Deviation techniques. The final result is a freefalling space of sound, generating relentless reconstruction and unnerving chaos. Russell Haswell (UK) and Yasunao Tone (Japan) have a rich history of exploring the extremes of sound and technology, where they intertwine and where the potential lies for deviation from the function intrinsic to their design. Both artists have undertaken years of rigorous exploration of sonic phenomena via the production of music tools. The constant shift in synthesis and production over the decades has only provoked further challenges, resulting in an excited means of exploration and consistently new and challenging results. Over the course of his practice, Haswell has disentangled the limits of Digital Audio Tape (DAT), the Sound Designer II software, Xenakis' UPIC system and analog synthesis systems in a relentless pursuit of the new in the known. Yasunao Tone's audio investigations have regularly placed him within the systems and processes he has developed to generate works. His Wounded CD works and his interactions with data entry and software interfaces, such as graphic tablets in 495.63 (2007) and his MP3 Deviation software employed on this release all provide a path whereby the human input creates a juncture in the "normal" operations of the tools at hand. Convulsive Threshold is the result of years of research and experimentation. Haswell's systems of hybrid analog/digital audio generation are one of the starting points for the Convulsive Threshold collaboration, and in part define its sonic palette. The results of his synthesis become subjected to Tone's MP3 Deviation techniques, modified and manipulated in response to deviated MP3 files. The results are a glorious spiral of sound, space and dynamics, a hyperactive Mandlebrot set which exudes relentless reconstruction, chaos and as a result, presents an entirely new form. Convulsive Threshold forms a dialogue which sees two of the most recalcitrant sound artists active today coming together as one. CD release packaged in LP sleeve.