MB-185 III Signature vs ST-150
The ST-150's power @ 8ω is 120W against the MB-185 III Signature's 225W and its signal-to-noise 95 dB against 90 dB. Both share thd (3.000%) and class (Tube).
AI-generated product photo — not official manufacturer imagery.
AmplifiersTube AmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$12,021.50
Around — community and catalog average, updates slowly
About the MB-185 III Signature
The VTL MB-185 Series III Signature is a fully balanced vacuum tube monoblock power amplifier with triode/tetrode switching, delivering 225 watts in tetrode mode and 140 watts in triode mode into a 5Ω load. It uses 8 x EL34 or 6CA7 output tubes plus 1 x 12AT7 and 1 x 12BH7, supports 4Ω to 8Ω speaker loads, includes adjustable damping factor control, and features VTL's Auto Bias and Fault Sensing technology.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 225W @ 8Ω
- Power @ 4Ω
- 225W @ 4Ω
- Amplifier Class
- tube
- Damping Factor
- 4
- Minimum Impedance
- 4Ω
- Input Sensitivity
- 1.5V RMS
- Input Impedance
- 45Ω
Analog Output
Analog signal output specifications
- THD
- 3.000%
- SNR
- 90 dB
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- single-ended
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 480 × 230 × 260 mm (W × H × D)
- Weight
- 25 kg (55 lbs)
Key Specifications
Power: 225W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions