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Meyer Sound MPS-488HPp Power Supply

48 V DC power supply with 8 Phoenix 5-pin output connectors - replaces the Meyer Sound MPS-488p

Product Description

The Meyer Sound MPS-488HPp Power Supply delivers DC power and balanced audio to up to eight Meyer Sound loudspeakers that require an external 48 V DC power supply. The power supply's outputs are available as Phoenix 5-pin connectors on the MPS‑488HPp model. The single-space 19-inch rack MPS‑488HPp can be used with the UP-4XP ultracompact loudspeaker, MM‑4XP miniature loudspeaker, MM‑10XP miniature subwoofer, and HMS‑10 surround loudspeaker. Meyer Sound's externally powered loudspeakers are equipped with onboard amplification and signal-processing circuits that store DC power and tolerate voltage drops (up to 30 percent), thereby accommodating light-gauge cables and lengthy cable runs. Powering loudspeakers from an external source eliminates the need for wiring conduits while still preserving the advantages of self-powered systems.

The MPS‑488HPp receives eight channels of balanced audio from its XLR female input connectors and routes the audio, along with 48 V of DC power, to its eight output connectors. Input channels feature toggle switches that route inputs to corresponding channel outputs only, or to adjacent, contiguous channel outputs. For example, channel input 1 can be routed to channel outputs 1 and 2 and channel input 3 can be routed to channel outputs 3 and 4. Another example is to route channel input 1 to channel outputs 1–4 and channel input 5 to channel outputs 5–8. You can also simply route all eight channel inputs in parallel to their corresponding channel outputs.

The MPS‑488HPp's eight channel outputs are equipped with sophisticated microprocessor-controlled current limiting that protects each channel from short circuits and unexpected voltages. Outputs can deliver DC power to loudspeakers at cable lengths up to 150 feet or 300 feet (depending on the loudspeaker model) with just 1 dB of loss in peak SPL using 18 AWG wire. The use of composite multiconductor cables (such as Belden® 1502) allows a single cable to carry both audio and DC power from the MPS‑488HP to the loudspeakers. Longer cable lengths are possible for moderate applications that don't drive the loudspeakers to maximum output, as well as for installations with heavier wire gauges.

The unit's front panel has two LEDs per channel output that provide useful feedback on the status of the system. The blue voltage LEDs indicate when voltage is present for each channel output. The green load current LEDs indicate when a loudspeaker is connected to a channel output, glow brighter as the signal level increases, and blink when a short circuit is encountered.


  • Power multiple Meyer Sound loudspeakers that require a 48 V DC external power supply
  • Route DC power and balanced audio to loudspeakers with single, composite cables
  • Phoenix 5-pin channel outputs
  • Front panel LEDs provide system feedback on voltage and load current levels
  • Remote monitoring of output voltage and load current parameters with RMS

Product Specifications

Condition New
Package Contents Meyer Sound MPS-488HPp Power Supply
Width 19 in
Height 1.73 in
Depth 13.57 in
Unit Weight 15.5 lb
Channels 8-Channel
Chassis 19-inch Rack-mount
Output Connectors Analog XLR

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
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In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
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This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
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The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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