AI-generated product photo — not official manufacturer imagery.
Estimated price (community-sourced)
Original retail — discontinued, no used price recorded yet
About the MB-450 Series II Signature
The VTL MB-450 Series II Signature is a high-power, vacuum-tube monoblock power amplifier. It can be switched between tetrode and triode operation, with rated output of 425 W and 225 W respectively into a 5-ohm load. Its SmartTube system automatically monitors and biases the output tubes, reports tube faults, and provides protective shutdown. This information concerns the Series II specifically; VTL has since introduced a Series III, so the Series II is no longer the current version in the MB-450 line.
Specifications
Power Specifications
Amplification power output and characteristics
- Amplifier Class
- tube
- Minimum Impedance
- 5Ω
- Input Sensitivity
- 2.0V RMS
- Input Impedance
- 42000Ω
Analog Output
Analog signal output specifications
- THD
- 2.500%
- SNR
- 110 dB
Connectivity
Input and output connections
- Digital Inputs
- balanced XLR, single-ended RCA
- Analog Outputs
- speaker binding posts
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions