TC-Helicon, Computer Hardware, models:

PERFORM-VE	Reference Manual User Manual
PERFORM-VK	User Manual Quick Start Manual
Perform-V	Reference Manual
Quintet	User Manual
VOICEPRISM PLUS	User'S Manual Supplement
VoiceDoubler	User Manual
VoiceOne	User Manual
VoicePrism	User Manual
VoicePro	Instruction Manual
VoiceTone Correct XT	User Manual