

MINIBLOCK 400W
Compact by design,
engineered for performance
The Miniblock 400W Series enters its third generation, combining power, reliability, and versatility in a compact design.
Equipped with a universal switch-mode power supply (90V to 260V), a high-efficiency Class D amplifier, and active signal monitoring with limiter, the Miniblock 400W delivers audio reproduction with ultra-low distortion (<0.1%) and maximum stability in any application.
Available in three versions — SUB, HPF, and FULL — it adapts precisely to different sound reinforcement needs, always delivering the premium performance that defines Magna.
Full
Versatile and complete, the Miniblock 400W FULL covers the entire frequency range with precision. It also features an integrated subsonic filter, providing maximum protection against ultra-low frequencies and reliable operation in any system.
HPF
Equipped with an integrated High Pass Filter (HPF), the Miniblock 400W HPF is ideal for 3” and 4” loudspeakers. It protects smaller transducers by eliminating unwanted sub-bass, ensuring clarity and safe reproduction.
Sub
Specifically designed for subwoofers, the Miniblock 400W SUB delivers dedicated power to low frequencies, ensuring deep and solid sub-bass reinforcement. Perfect for those who demand high-impact performance.
S P E C I F I C A T I O N S
3.4"
87mm

9" | 230 mm
5.7" I 145 mm
Input sensitivity: 0.420mV
· 400Wrms/4Ω 33/66ms @ 1KHz tone burst
· 200Wrms/8Ω 33/66ms
· 100Wrms/16Ω 33/66ms
THD+N and SMPTE IMD lower than 0.1%
Output impedance < 5mΩ (damping > 200)
SNR better than 110dBA
Slew rate > 30V/µs
Maximum power consumption: 0.6kVA
Dual parallel outputs (Phoenix connector)
Gold-plated RCA inputs
Worldwide 2U rack standard
Weight: 3.96 lbs | 1.80 Kg





