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Power Amplifier

Crown XLi 3500 Power Amplifier

The Crown XLi 3500 is the no-nonsense two-channel power amp that has been the entry point to "real touring power" for two decades. 1350W per channel @ 4Ω, no fancy DSP, no networking — just clean analog amplification with bridge-mono switchable for sub duty. Lives in regional touring rigs, schools, churches, practice rooms, and house systems where simplicity and bulletproof reliability beat features.

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Photos

Manufacturer product photography — the drawn faceplate stays true to panel layout; these show the hardware itself.

Photo: Crown AudioClick to zoom
Documented outputs
22 destination connections
Documented inputs
3Based on documented inputs
Rack space
2UBuilder checks available rail space
Power draw
350W1350W documented maximum
Catalog estimate
~$749Use retailer rows for current price and stock

01 · What it does—and what that changes in your rig.

Product overview

Start with the payoff, then work through how it functions, where it fits, and the details that change a real build.

The payoff

Power Amplifier decisions, organized around the whole rig.

The Crown XLi 3500 is a two-channel analog power amplifier that has been earning its rack space in regional touring, house systems, and school auditoriums for a long time. It does one thing: take a line-level signal and push serious wattage to speakers — 1350 watts per channel into 4 ohms, or bridged into mono for sub duty. There is no onboard DSP, no Dante port, no app. That absence is the point. If you already have a proper processor or crossover upstream, this amp just gets out of the way and delivers power.

Documented outputs
22 destination connections
Documented inputs
3Based on documented inputs
Rack space
2UBuilder checks available rail space
crownXLi 3500
Crown product panel2U · 350W
Function

How it works in the path

At 14 kilograms and 365mm deep, this is a legitimate chunk of iron in a 2U frame — plan your rack depth and confirm your rails can take the weight before you commit a shelf position. Idle draw is 350 watts, peaking at 1350 watts under load, so on a shared circuit with other gear you need to do the math before load-in, not during. Inputs accept XLR or quarter-inch on both channels, which is useful when your patch runs out of tidy options. Speakon outputs are the right call for anything carrying real wattage to a cabinet.

Best fit

Where it earns its place in the rack

This amp belongs in a rig where budget is real, the signal chain already has processing, and reliability over hundreds of shows matters more than remote monitoring or built-in limiting. It is a strong choice for wedge duty, side-fills, or driving a sub in bridge mono when you do not need the flexibility of a networked amp. If you are building an IEM playback rig where every pound counts, the weight may steer you toward lighter Class D options. If you need onboard DSP or dante I/O, look elsewhere — but if you just need clean, honest power at this price, the XLi 3500 is hard to argue with.

In the rack

Details worth deciding before load-in.

  • Bridge it for sub duty by using the bridge-mono switch and feeding your subwoofer from the left Speakon output — just make sure your sub cabinet is rated for the impedance you are presenting in that mode.
  • At 14kg, this amp will flex a shallow rack shelf. Either use a deep rack bag with proper rear support or ensure your road case has a full rear rail — let the rails carry the weight, not the front ears.
  • Account for the 1350W peak draw before load-in: on a standard 15A circuit shared with a console, a stage box, and a power conditioner, you can run out of headroom fast. Put this amp on its own circuit leg if the venue allows it.
  • The XLR and quarter-inch combo inputs mean you can take a direct feed from a crossover's TRS output without hunting for an adapter — useful in a pinch, but label the cable clearly so no one patches line level into it expecting a mic input downstream.

02 · Know the whole path before you buy.

Signal path

Learn the route as a block diagram: source, product function, transport, and destination. Select any block to see what enters, what changes, and what leaves.

Interactive block diagramAuto-looping · hover, focus, or tap to hold a stage
Port-type signalProduct functionSystem boundary
Follow one signal from source to destination

Each block answers the same three questions: what arrives, what changes here, and what leaves.

01 · Source · selected
01 · Source

3 documented inputs

XLR female + IEC C14

Arrives as
3 documented inputs
Connector
XLR female + IEC C14
Signal
analog audio

03 · What this product asks of the rest of the system.

Compatibility

Treat connector names as the start of the check—not the answer. These are the boundaries that determine a complete working path.

Best fit · Power Amplifier

Use it when 2U and 365 mm of depth fit the case.

Plan the companion path

Complete the path with upstream and downstream gear that matches connector, direction, signal type, protocol, and wiring standard.

Connector boundary

Documented connectors: XLR female, IEC C14. Match connector, direction, and signal type—not shape alone.

04 · Every connector, grouped by job.

I/O ports

Switch the product view and the documented port inventory updates with it—hardware and data stay side by side.

Every connector, grouped by job.

Switch panels to keep the hardware view and the documented port list in sync.

Front panel
crownXLi 3500
Rear panel
CrownXLi 3500
All documented ports for Crown XLi 3500 Power Amplifier
PortPanelConnectorDirectionSignalChannels
Input L (XLR + 1/4")rearXLR female inputanalog audio—
Input R (XLR + 1/4")rearXLR female inputanalog audio—
Speaker Out L (Speakon)rearXLR female outputanalog audio—
Speaker Out R (Speakon)rearXLR female outputanalog audio—
Power (IEC)rearIEC C14 inputpower—

Showing 5 of 5 documented physical ports.

05 · Compare the decision, not just the price.

Alternatives

The rows are organized around fit, power, I/O, and system role so a cheaper unit cannot hide a more expensive workflow.

Compare
Crown XLi 3500 Power Amplifier
Crown DCi 4|600N Network Amplifier
Crown DCi 8|600N Network Amplifier
Crown I-Tech 12000HD
Fit📐 2U📐 2U📐 2U📐 2U
Power⚡ 350W⚡ 400W⚡ 700W⚡ 600W
Weight⚖️ 30.9 lb⚖️ 25.4 lb⚖️ 28.0 lb⚖️ 32.2 lb
I/O🔌 5🔌 12🔌 20🔌 7
Estimate💵 ~$749💵 ~$2,799💵 ~$4,199💵 ~$4,499
Deep diveCurrent selectionFull comparison →Full comparison →Full comparison →

06 · Resolve the questions that can change the purchase or build plan.

Planning questions

Short, source-backed answers surface rack fit, power, cabling, and connection details before they become surprises.

How will the Crown XLi 3500 Power Amplifier affect rack fit and case depth?

It occupies 2U. Its documented depth is 365 mm.

How much power does the Crown XLi 3500 Power Amplifier draw?

Typical draw is 350W and documented maximum draw is 1350W.

What connections does the Crown XLi 3500 Power Amplifier have?

5 documented physical ports, including Input L (XLR + 1/4"), Input R (XLR + 1/4"), Speaker Out L (Speakon), Speaker Out R (Speakon), Power (IEC).

07 · See this unit inside a real rack plan.

Builder preview

Placement is only the start. Builder checks space · depth · weight, power headroom, dependencies, and compatible signal paths around this exact catalog item.Open in Builder
XLi 3500 Power Amplifier positioned in a rack planA simplified plan shows the unit taking 2 rack units, with its documented connection path continuing to a planned destination.CrownXLi 3500CONNECTED GEARnext signal destination2U · 365 mm deep

08 · Related gear, in the order you may need it.

Planning guides for power amplifier systems.