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DATASHEET
The Meridian 258 is our dedicated rack-mount Eight Channel Power Amplifier. This powerful, high performance, cool-
running Class D amplifier is suitable for a wide range of applications and delivers >100W per channel into 4 ohms or
>70W per channel per channel into 8 ohms*.
At only 1U high, the compact 258 is a category changing amplifier; bringing Meridian high resolution sound quality to
every zone it powers.
meridian-audio.com
• Featuring a highly efficient, cool and fanless
construction, the Meridian 258 provides a truly ‘fit
and forget’ solution when driving multiple zones.
Its compact chassis also takes up minimal space
in-rack, measuring just 1U high.
• An audiophile approach has been taken to the
258’s component selection, resulting in a level
of performance typically associated with power
amplifiers offered at a significantly higher price.
258 EIGHT CHANNEL
• The adoption of an advanced linear power supply
provides excellent isolation from the AC supply
for excellent sound quality.
• The Meridian 258’s short signal path delivers
signal purity, while multilayer circuit boards
provide the best electromagnetic performance.
• A ground plane design has also been chosen for
optimal signal handling.
PRELIMINARY DATASHEET
POWER AMPLIFIER
OVERVIEW
PRODUCT HIGHLIGHTS
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DATASHEET
meridian-audio.com
REAR PANEL LAYOUT
The featured high efficiency (>95%) Class D
amplifiers produce very little heat. In conjunction
with the aluminum construction, the 258 is easily
cooled without the need for vents.
A new linear power supply has also been selected
to provide isolation from the AC supply and offer
both sound quality and intrinsic durability.
CONSTRUCTION
• Separate reservoir capacitors – offers the advantages of
a multiple-mono construction in a compact package. This
keeps signal paths very short and improves isolation between
channels.
• High performance components – multilayer circuit boards with
ground planes combined with audiophile-grade components
deliver a category-leading quality of sound.
PRELIMINARY DATASHEET
SPECIFICATION
AUDIO OUTPUTS
AUDIO INPUTS
CONTROL
DISPLAY
POWER
DIMENSIONS
CONSTRUCTION
*One channel driven at 10% THD
• 70W into 8 Ohms per channel at 10% THD • 100W into 4 Ohms per channel at 10% THD
• Phoenix Connectors supplied for ease of installation 24-12 AWG cable
• Eight RCA inputs
• REAR PANEL: Trigger input [3.5mm 5-30 VDC] • FRONT PANEL: On/Off Switch
• LEDs to indicate ‘Standby’ [Blue], ‘On’ [White], ‘Overload’ [Red]
• Advanced linear power supply: 100V ac 50/60 Hz | 110-120V ac 50/60Hz | 220-240V ac 50/60Hz
• HEIGHT: 44mm [1.73in] • WIDTH: 480mm [18.9in]
• DEPTH: 360mm [14.17in] • WEIGHT: 5.5Kg [12.13lbs]
• All aluminium construction • Optional standalone feet pads supplied
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