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MB-450 III Signature

Name: Vacuum Tube Logic (VTL) MB-450 III Signature
Brand: Vacuum Tube Logic (VTL)

Vacuum Tube Logic (VTL)

AmplifiersPower AmplifiersTube Amplifiers

Estimated price (community-sourced)

$7,000 - $41,195

About the MB-450 III Signature

The VTL MB-450 Series III Signature monoblock amplifier represents a significant evolution of the long-standing MB-450 platform, featuring a fully balanced differential input stage and redesigned output transformer. Key innovations include a precision-regulated power supply for tube bias stability and a user-configurable damping factor control with four settings (LOW, MED, HI, MAX) to optimize speaker matching. The amplifier operates in either tetrode (425W into 5Ω) or triode (225W) modes, employing eight 6550/KT-88 output tubes per monoblock.

Specifications

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