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Black multi-channel home theater power amplifier with RCA and XLR inputs

Monoprice Inc.

Monoprice Inc. 143863 Monolith M2100X 2x90W Multi-Channel Amplifier

SKU CH-D6PF-S8P28

Delivers 90 watts per channel to multi-channel home-theater systems through RCA and XLR inputs

  • TypeAmplifiers
  • Features2x90 Watts Per Channel
  • 90 watts per channel drives demanding speakers
  • Multi-channel design powers a full home-theatre system
  • RCA and XLR inputs connect both consumer and pro gear
  • Model 143863 identifies the exact amplifier variant
  • Monolith M2100X branding marks the premium amplifier line

Monolith M2100X amplifier purpose

The Monolith M2100X is a multi-channel home-theater power amplifier rated at 90 watts per channel across two channels. It accepts both RCA and XLR inputs, making it suitable for systems that need balanced and unbalanced connectivity in a single unit. Builders integrating a dedicated power block for front left and right speakers will find the input flexibility useful.

Sustained output behaviour

The amplifier delivers its rated 90 watts per channel continuously rather than only in short bursts, so dynamics remain consistent during extended listening sessions. Multi-channel design means each channel maintains its output without the current limiting that can affect shared-supply stereo units under heavy demand. This behaviour supports demanding soundtrack passages without compression.

Thermals noise and power draw

The chassis runs within normal thermal limits for a class AB multi-channel design during typical home-theater use. Fan noise stays low enough not to interfere with quiet passages at normal seating distances. Power draw scales with output level, so idle consumption remains modest while full output draws proportionally more from the mains.

Highlights

  • 90 watts per channel drives demanding speakers
  • Multi-channel design powers a full home-theatre system
  • RCA and XLR inputs connect both consumer and pro gear
  • Model 143863 identifies the exact amplifier variant
  • Monolith M2100X branding marks the premium amplifier line

Specifications

BrandMonoprice
Model143863
Part Number143863
TypeAmplifiers
Features2x90 Watts Per Channel

Questions about this item

How much heat or fan noise does the Monolith M2100X produce when running all day?

The amplifier delivers 90 watts per channel into your speakers; sustained output will generate warmth, so allow open airflow around the chassis and avoid stacking other components directly on top.

What source equipment and cables must I already own to use the Monolith M2100X?

You need a pre-amplifier or AV processor with either RCA or XLR outputs, plus matching interconnect cables and speaker wire for each channel you plan to drive.

Will the Monolith M2100X integrate with my older speakers and pre-amp that only have RCA connections?

Yes, the unit provides both RCA and XLR inputs, so you can connect legacy RCA pre-outs directly while still having balanced XLR available for future upgrades.

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