At AXPONA 2026, Ex Machina Soundworks' Dev Avidon (seen above) and Danville Signal's Al Clark talk about the all-in-one Main Sequence System they demo’ed together at the show in an interview with Ken Micallef that's now posted on our YouTube channel.
Dev Avidon and Dan "Physics" Grochowski of Ex Machina Soundworks, joined by Al Clark of Danville Signal, presented a room demo at AXPONA 2026 based on their novel technology.
"The system you heard is the preview version of the Main Sequence System, a joint venture by Danville Signal and Ex Machina Soundworks," Clark wrote to me after AXPONA.
Though my small DJI Mini Mics are not the last word in capturing audio, the Main Sequence System's vanishing noise floor, zero ringing, ultra-fast transients, and overall sense of purity were impressively evident. And, as Clark stated, when I moved close to the system, there was no loss of soundstage, depth, or music detail.
Equipment list (Main Sequence System, inclusive: $50,000): DAC: AKM AK4499EX DACs with class-A anti-imaging filters. DSP audio processor: dspNexus 2/8. Measurement microphone & stand: Beyerdynamic MM1. Amplifiers: two dspNexus 250W 4-channel amps. Speakers: User-selected Durasein solid surface material; dual customized Purifi PTT10.0X woofers; custom Seas C18 coaxial driver featuring Composite Sound Metamodal TX TPCD technology. Interconnects: Custom.






























