MACKIE M48 - 48V Phantom Power Supply

MACKIE M48 – 48V Phantom Power Supply

The Mackie M48 phantom power supply provides 48V of clean, stable power for condenser microphones and professional audio equipment that require external power. Its compact design and “Built-Like-A-Tank™” steel chassis ensure durability on the road and in the studio, while transparent, noise-free operation maintains signal integrity. It can be powered by a 9V battery or the supplied power adapter, and includes power and low-battery LED indicators for quick power monitoring.

Main features

• Inputs and outputs: Balanced 3-pin XLR female input and XLR male output.
• Output voltage: 48V ±3V consistent phantom power.
• Maximum current: 40mA per channel sufficient for most professional condenser capsules.
• Power supply: Internal with 9 V battery or external 9–12 V DC (adapter included).
• LED indicators: Power On/Off and Low Battery on front panel for quick status check.
• Construction: Heavy-duty “Built-Like-A-Tank™” metal chassis.

User benefits

• Reliable power: You'll always have clean 48V, without dropouts or annoying noises, even in systems with insufficient phantom power.
• Versatility of use: Battery or adapter powered, ideal for outdoors, locations and studios without an AC outlet.
• Compact and portable: Its small dimensions (38 × 86 × 147 mm) and light weight (0.4 kg) make it easy to transport.
• Quick Setup: Simply plug in between microphone and preamp to instantly activate phantom power.
• Visual monitoring: Front LEDs indicate power and battery status, preventing unexpected interruptions.

Use cases

• Studio recording sessions with condenser microphones.
• Live and touring in venues without stable phantom power.
• Portable mounts in outdoor and remote locations.
• Fixed installations in churches, auditoriums and conference rooms.

Frequently Asked Questions

• What type of battery does it use? 9V (type 6F22/PP3), accessible and easy to replace.
• Does it work with high-current microphones? Yes; it provides up to 40 mA, enough for mid- and high-end condenser capsules.
• How do I know when to change the battery? The “Low Battery” LED lights up when the voltage drops below the operating threshold.
• Can I leave the adapter connected permanently? Yes; it's designed for continuous use with the supplied AC adapter.

Description for projects

Mackie M48 Phantom Power Supply: Balanced XLR in/out, 48 V ±3 V phantom power, 40 mA, 9 V battery or 9–12 V DC power supplies, status LEDs, metal chassis, 38×86×147 mm, 0.4 kg.