Taramps TS 400x4 4-Channel Class D Amplifier - Compact Power

In this review the Taramps TS 400x4 is assessed as a compact, no-nonsense 4-channel Class D amplifier best suited to installers and builders who need reliable power in a small package. The single biggest reason to consider it is the flexibility: it can run four speakers at 100W RMS each into 2 ohms or be bridged to two channels at 200W RMS each into 4 ohms, making it useful for systems that mix door speakers, tweeters and small subwoofers. The amp's dual input options and simple crossover make it straightforward to add to an existing head unit or high-level factory output.

Key Features

• 400W RMS total power: Delivers four 100W channels at 2 ohms or two bridged 200W channels at 4 ohms for flexible system configurations.
• Dual input options: High-level input with automatic activation removes the need for adapters, while RCA inputs allow connection to aftermarket head units.
• Built-in crossover: Fixed high-pass and low-pass filters at 90Hz and a full-range option let installers route signal cleanly to speakers or subs.
• Compact footprint: Small physical size makes it easy to mount under seats, in trunks or on vehicles with limited space without sacrificing power output.
• Installation ready: Clear wiring specifications and a 20A fuse rating simplify professional wiring: 11 AWG power, 15 AWG outputs, 18 AWG remote.

Who It's For

The TS 400x4 is ideal for DIY installers, mobile audio technicians and riders who need a compact amplifier to drive multiple speakers or a mix of speakers and a small subwoofer. Its automatic high-level input and RCA inputs make it a good choice when retaining a factory head unit or upgrading an aftermarket source.

It is less appropriate for users seeking very high-end audiophile clarity at extreme volumes or those who need very large subwoofer power reserves; for demanding subwoofer-only builds a dedicated mono amp with higher RMS into low impedance would be a better option.

Pros & Cons

Pros

• Compact size with a lot of power makes it easy to install in tight spaces.
• Automatic high-level input and RCA terminals provide universal compatibility with most head units.
• Built-in crossover and precise gain control simplify system tuning for mixed speaker setups.

Cons

• Fixed crossover frequencies limit fine-grain tuning compared with variable crossover amps.

Specifications

Our Verdict

The Taramps TS 400x4 is a pragmatic choice for anyone needing compact, reliable multichannel power without fuss. It excels where size, value and versatility matter - particularly for small cars, motorcycles and marine or golf cart installs - and its dual inputs and built-in crossover make it straightforward to integrate. For most users seeking solid mid-level power and easy installation it represents good value.

Frequently Asked Questions

Can this amp run both speakers and a subwoofer?
Yes, the fixed high-pass and low-pass filters let you route full-range, HPF or LPF to appropriate channels so it can run door speakers and a small subwoofer.

Do I need a special adapter to use factory speaker wires?
No, the amplifier includes a high-level input with automatic activation so you can connect directly to factory speaker outputs without extra adapters.

What gauge wiring should I use?
Follow the stated wiring specs: 11 AWG for power, 15 AWG for speaker outputs and 18 AWG for the remote with a 20A fuse.