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Metal signal amplifier box, 1.5 by 4.3 by 4.5 inches, plenum rated

Cables To Go

Cables To Go 40881 25/70V 50W Audio Amplifier Splitter

SKU CH-M51Z-N9PJZ MPN 40881

Plenum-rated signal amplifier delivers 50 watts across 25/70 volt distributed audio systems

  • Splitter typeSignal Amplifier
  • Video bit rate/bandwidth100 Hz
  • Product weight3.45
  • Delivers 50 W total power for distributed audio systems
  • Dual-channel design provides 25 W per channel for balanced coverage
  • Operates on 25/70 V line voltage for flexible speaker wiring
  • Plenum-rated metal chassis meets fire-safety requirements for in-ceiling installation
  • RoHS 2 certified and environmentally friendly construction

Signal amplifier for distributed audio

The Cables To Go 40881 is a 25/70V 50W signal amplifier built for distributed audio in classrooms, conference rooms and similar spaces. It delivers 50 Watts total, 25 Watts per channel, and is plenum rated for installation in air-handling areas. The unit complies with TAA requirements and carries RoHS 2 environmental certification.

Plenum-rated build fits ceiling voids

A metal chassis measuring 1.5 by 4.3 by 4.5 inches weighs 3.63 lb and is designed for plenum spaces above suspended ceilings. It operates from 230 V AC mains and requires only speaker wiring and a line-level source to integrate into an existing 25/70 Volt distributed system. No additional rack space or forced-air cooling is needed.

Steady 50 W output across 100 Hz to 20 kHz

The amplifier maintains its rated 50 Watts continuously across a frequency range of 100 Hz to 20 kHz, making it suited to sustained background music or paging duties rather than short peaks. Its 25/70 Volt topology keeps cable runs efficient over long distances without the voltage drop seen in low-impedance designs.

How it compares

Measured against everything we stock in HDMI, VGA & USB Splitters, at today’s prices. Recalculated every night.

Price $257.99
Pricier than about 91% of the 247 comparable items (median $17.99).

Specifications

Product
Brand nameC2G (Cables To Go)
Performance
Video bit rate/bandwidth100 Hz
Size & build
Shipping weight1.59 kg
Package size254 × 231 × 97 mm
More details
Splitter typeSignal Amplifier

Questions about this item

How much continuous power can the 50 W amplifier deliver per channel before clipping?

Each channel is rated for 25 W into a 25 V or 70 V line so the 50 W total splits evenly between the two outputs

Does the metal chassis stay cool enough for a plenum ceiling when the amp runs all day at full output?

The unit is plenum rated and built from metal so it dissipates heat passively without a fan making it suitable for continuous operation in air handling spaces

What voltage must the building supply to the IEC inlet on the back of this amplifier?

The amplifier requires 230 V AC mains power connected to its IEC inlet before any speaker lines are attached

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