Rockford Fosgate T600-4 Power 600 Watt 4-Channel Amplifier

150 Watts × 4 Channels at 2Ω Confirmed Power, RCA Pass-Thru, and Built-In Crossover for Front Stage and Rear Subwoofer Systems.

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Product Overview

The Rockford Fosgate Power T600-4 is a 600W 4-channel amplifier delivering 150W per channel at 2Ω confirmed by Rockford Fosgate stepping up from the T400-4's 100W per channel with the same MOSFET, 24dB/octave crossover, and 2/4 channel input switch platform. The addition of RCA pass-thru outputs absent on the T400-4 allows the T600-4 to pass its headunit input signal downstream to a dedicated subwoofer amplifier, making it suitable as the foundation of a full multi-amplifier car audio build without requiring a Y-split at the headunit.

The T600-4 is designed for both full 4-way front and rear speaker systems and front stage component systems with rear subwoofers the built-in crossover allows the rear channels to be configured specifically for one or two subwoofer drivers. Compact chassis design maintains performance and power output without requiring a large installation footprint, providing the balance of output and physical size required for higher-performance builds in standard vehicle installation spaces.

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Key Specifications

• Power output: 150W × 4 channels @ 2Ω (confirmed)
• Power output @ 4Ω: Not specified — confirm with Rockford Fosgate
• Bridged output: Not specified — confirm with Rockford Fosgate
• Configuration: 4-channel
• MOSFET power supply: Yes
• MOSFET output stage: Yes
• Crossover: 24dB/octave
• 2/4 channel input switch: Yes
• RCA pass-thru outputs: Yes
• Power/ground connectors: 4 gauge
• Speaker connections: Audiophile grade
• Amplifier class: Not specified — confirm with Rockford Fosgate
• Signal-to-noise ratio: Not specified — confirm with Rockford Fosgate
• THD: Not specified — confirm with Rockford Fosgate
• Frequency response: Not specified — confirm with Rockford Fosgate
• Dimensions: Not specified — confirm with Rockford Fosgate
• Weight: Not specified — confirm with Rockford Fosgate
• Warranty: Not specified — confirm with Rockford Fosgate

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Features & Benefits

• 150W × 4 Channels at 2Ω — Confirmed Power Specification — Rockford Fosgate confirms 150W per channel at 2Ω, for a total 600W output. This is 50% more per-channel power than the T400-4 — providing greater headroom for more demanding speaker drivers and higher-output installations. Power at 4Ω and bridged mono output should be confirmed from the official Rockford Fosgate datasheet.
• RCA Pass-Thru Outputs — Multi-Amplifier System Integration — An addition over the T400-4, the RCA pass-thru loops the headunit input signal to a downstream amplifier. This allows the T600-4 to drive all four speaker channels while simultaneously passing the signal to a dedicated mono subwoofer amplifier — building a complete multi-amplifier system without splitting the headunit RCA output.
• Front Stage Component + Rear Subwoofer Configuration — The 24dB/octave crossover allows the rear two channels to be configured independently for subwoofer use — setting a low-pass crossover point for one or two rear sub drivers while the front channels operate in high-pass or full-range mode for component speakers.
• 4-Way Full-Range System Capability — All four channels can be configured in full-range or high-pass mode for a standard front and rear speaker system — providing amplification across all four speaker positions from a single unit.
• 2/4 Channel Input Switch — A stereo 2-channel input can be internally distributed to drive all four output channels, or discrete 4-channel front and rear inputs can be used for independent level control. Accommodates headunits with 2-channel or 4-channel preamp outputs.
• MOSFET Power Supply and Output Stage — MOSFET-based power delivery across both the supply and output stages — providing the efficiency and current capacity needed for clean 150W-per-channel operation.
• 24dB/Octave Crossover — Steep crossover slope for precise frequency band separation — high-pass for front stage speakers, low-pass for rear subwoofers, or full-range pass-through.
• 4 Gauge Power and Ground Connectors — 4-gauge wiring for a 600W 4-channel amplifier — matching the power delivery infrastructure to the amplifier's output capability.
• Audiophile Grade Speaker Connections — High-quality output terminals across all four channels.

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Technical Specs

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Compatible With / Goes Well With

Suitable system configurations:

• Full 4-way front and rear speaker system
• Front stage component speakers (high-pass) + rear subwoofers (low-pass)
• Multi-amplifier builds: T600-4 for four speaker channels + mono sub amp connected via RCA pass-thru

T400-4 vs T600-4 — choosing between them:

• T400-4 (100W×4 @ 2Ω): Confirmed 100W per channel, Dynamic Thermal Management for under-seat/compact install — best for space-constrained applications
• T600-4 (150W×4 @ 2Ω): Confirmed 150W per channel + RCA pass-thru — best when more power and multi-amp signal routing are required

Pairs well with:

• A dedicated Rockford Fosgate mono subwoofer amplifier connected via RCA pass-thru (T1000-1BDCP, T1500-1BDCP, or T2500-1BDCP)
• Rockford Fosgate or aftermarket component front stage speakers
• Rear subwoofers (one or two, wired to 2Ω or 4Ω per channel)
• 4-gauge amplifier wiring kits
• Rockford Fosgate or aftermarket 4-channel RCA cables

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Frequently Asked Questions

What is the confirmed power output of the T600-4?

Rockford Fosgate confirms 150W per channel at 2Ω — 600W total across four channels. Power at 4Ω and the bridged mono output are not confirmed in the supplier data. Pull the official T600-4 datasheet for the complete power specification table.

How does the T600-4 differ from the T400-4?

The T600-4 delivers 150W per channel versus the T400-4's 100W per channel (both at 2Ω), and adds RCA pass-thru outputs for downstream amplifier connection — absent on the T400-4. The T400-4 includes Dynamic Thermal Management for compact under-seat installation — confirm whether the T600-4 includes equivalent thermal management from the official Rockford Fosgate documentation.

How does the RCA pass-thru work in a multi-amplifier system?

The RCA pass-thru loops the headunit RCA signal from the T600-4 to a downstream amplifier. This allows the T600-4 to drive four speaker channels while the pass-thru signal feeds a dedicated mono subwoofer amplifier — building a complete speaker and subwoofer system without requiring a Y-split or additional signal distribution at the headunit.

Can the rear channels be used for subwoofers?

Yes. The built-in 24dB/octave crossover can be set to low-pass on the rear channels for subwoofer use, while the front channels run high-pass for component speakers — or all four channels can run full-range for a standard 4-way speaker system.

What gauge wiring does the T600-4 require?

The T600-4 uses 4-gauge power and ground connectors. Confirm the specific run length and fuse requirements for your installation with Rockford Fosgate's wiring guide or your installer.