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Black rectangular AC adapter with 4-pin DIN connector and Euro plug adapter

HQRP

HQRP 9V AC Adapter for Alesis P4 AC09 25D 4-pin DIN Connector video accessory

SKU CH-S59G-HR6K1

Supplies 9 V AC at 3 A through a 4-pin DIN connector for compatible Alesis rack units and mixers

  • Product typeCharger
  • Powers Alesis modules with 9 V AC output
  • Accepts 100-120 V AC input for standard mains
  • DIN 4-pin connector fits QSR, DMPro and Quadraverb units
  • Includes Euro plug adapter for European sockets
  • Replaces Alesis P4 AC09 25D supply for 1622 mixer and S4 series

9V AC Adapter for Alesis Modules

This HQRP power supply replaces the Alesis P4 AC09 25D unit for compatible sound modules and keyboards. It delivers 9V AC at 3A through a 4-pin DIN connector. The package includes a Euro plug adapter for use with European mains sockets. It is intended for owners of the listed Alesis gear who need a direct replacement.

Sustained Operation on AC Mains

The adapter accepts 100V-120V AC input and provides a continuous 9V AC output rated at 3A. Because it supplies alternating current rather than DC, it matches the original specification for the QSR, DMPro, Quadraverb series, S4 and S4 Plus modules, QS6 keyboard, Wedge and 1622 mixer. The 1-year warranty covers defects during normal continuous use.

Limits of the 4-Pin DIN Interface

The 4-pin DIN connector carries only the 9V AC supply required by the compatible Alesis devices. It cannot power equipment that expects a different voltage, polarity or DC input. Buyers whose hardware uses a different connector type or requires a DC supply will need a different adapter. The Euro plug adapter only changes the mains plug shape, not the output characteristics.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 74% of the 3,838 comparable items (median $41.99).

Specifications

Product
Product typeCharger

Questions about this item

Does the 9V AC output run hot or make noise when powering a Quadraverb 2 all day?

The adapter delivers a steady 9V AC at 3A through the 4-pin DIN connector with no fan, so it stays silent and only warms slightly under continuous load.

What must I already have to use this HQRP adapter with my DMPro drum machine?

You need a mains outlet supplying 100V-120V AC and the original 4-pin DIN cable on the DMPro; the included Euro plug adapter lets you connect to European sockets.

Will this replacement supply work reliably with an older QS6 keyboard and 1622 mixer?

Yes — the 9V AC, 3A output matches the original Alesis P4 AC09 25D specification used by the QS6, 1622 mixer and the other listed modules.

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