William Kopecky

Bass guitars

• Axtra 4-string fretted and fretless custom basses
• 5-string
  Music Man Bongo
• 6-string
  Warwick
  Corvette
• Roland V-Bass.

Amplifiers

• Hartke 3500
• Ampeg SVT II Pro

Cabinets

• Ampeg 8x10
• Ampeg 4x10

Effects

• chorus and digital delay
  )
• Red Llama distortion

Other equipment

• Boomerang loop device
• EBows

with Kopecky

• Kopecky (1999)
• Serpentine Kaleidoscope (2000)
• Orion (2001)
• Sunset Gun (2003)
• Blood (2006)

with Michael Angelo Batio

• Lucid Intervals and Moments of Clarity (2000)
• Lucid Intervals and Moments of Clarity Part 2 (2004)
• Hands Without Shadows (2005)

with

• Call to Arms (2001)

with Haiku Funeral

• Funeral Assassination in the Hashish Cathedral (2009)
• If God is a Drug (2010)

with Par Lindh Project

• Live in Iceland (2002)
• Live in Poland (2008)

with The Flyin' Ryan Brothers

• Legacy (2002)
• Blue Marble (2005)
• Totality (2008)

with The Bollenberg Experience

• If Only Stones Could Speak (2002)

with Truth Squad

• Superkiller (2003)

with Far Corner

• Far Corner (2004)
• Endangered (2007)
• Intermission (2009)

with Parallel Mind

• Colossus ADEA (2005)

with Silence the Freak

• Relations (2005)

with Yeti Rain

• Discarnate (2006)
• Nest of Storms (2008)
• III (2010)
• Stars Fall Darkly (2013)

with Dan Maske

• Progressive Rock Keyboard (2007)

with Dimension X

• Implications of a Genetic Defense (2007)

with Anja

• Leaving the Alley of Dead Trees (2007)

with Glass

• Live at Progman Cometh (2007)

with Snarling Adjective Convention

• Bluewolf Bloodwalk (2008)