--- product_id: 1617327 title: "T400-4" brand: "rockford fosgate" price: "¥142704" currency: JPY in_stock: true category: "Rockford Fosgate" url: https://www.desertcart.jp/products/1617327-t400-4 store_origin: JP region: Japan --- # 400 Watts max power output 2 or 4 channel versatile config Variable Punch EQ +18dB boost T400-4 **Brand:** rockford fosgate **Price:** ¥142704 **Availability:** ✅ In Stock ## Summary > 🎵 Unleash epic sound power in a compact package — don’t just listen, dominate your drive! ## Quick Answers - **What is this?** T400-4 by rockford fosgate - **How much does it cost?** ¥142704 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/1617327-t400-4) ## Best For - rockford fosgate enthusiasts ## Why This Product - Trusted rockford fosgate brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Mighty:** Sleek Class A/B design fits tight spaces without sacrificing performance. - • **Power Meets Precision:** 400 Watts of clean, distortion-free sound to elevate your ride’s audio game. - • **Flexible Channel Modes:** Switch effortlessly between 2 or 4 channel setups to customize your soundstage. - • **Rock-Solid Reliability:** Built by Rockford Fosgate with a 2-year warranty—engineered to keep you rocking worry-free. - • **Tailored Audio Control:** Punch EQ and 24dB/octave Butterworth crossover let you fine-tune bass and treble with surgical precision. ## Overview The Rockford Fosgate Power T400-4 is a 400-Watt Class A/B 4-channel amplifier designed for high-fidelity, full-range audio systems. It supports flexible 2 or 4 channel configurations with stable bridging options, features advanced Punch EQ and Butterworth crossover for precise sound tuning, and boasts a compact footprint ideal for professional-grade car audio builds. Backed by Rockford Fosgate’s renowned build quality and a 2-year warranty, it delivers clean, powerful sound that keeps your system crisp and distortion-free even at high volumes. ## Description Buy Rockford Fosgate Power T400-4 400-Watt 4-Channel Amplifier | Class A/B, Ideal for a 4-way Full Range System or Component Speakers on the Front with Subs on the Rear: Multichannel Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - The Power T400-4 4-channel amplifier offers high fidelity in a full-range configuration with 400 Watts of POWER - Versatile design can be used in either 2 or 4 channel configurations (RMS Power Output: 60 Watts x 4 @ 4-Ohm or 100 Watts x 4 @ 2-Ohm or 200 Watts x 2 @ 4-Ohm Bridged or 2-Ohm x 2 Bridged Stable) - Our Class A/B amplifier offers the perfect balance of power output and compact design (2.14” x 8.14” x 13.66”) required for high performance audio systems - Featuring differential RCA inputs, variable Punch EQ with +18dB boost @ 45Hz and/or +14dB @ 12.5KHz and 24dB/octave Butterworth crossover make T400-4 an impressive POWER house - Famous Rockford Fosgate build quality ensures that the T400-4 will handle everything you throw at it! Full 2-year parts and labor warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0012Q9976 | | Best Sellers Rank | #223,991 in Electronics ( See Top 100 in Electronics ) #487 in Car Multichannel Amplifiers | | Brand | Rockford Fosgate | | Built-In Media | T400-4 | | Customer Reviews | 4.4 out of 5 stars 67 Reviews | | Item Highlight | Class A/B, Ideal for a 4-way Full Range System or Component Speakers on the Front with Subs on the Rear | | Item Type Name | Rockford Fosgate T400-4 Power 400 Watt 4-Channel Amplifier | | Item Weight | 10 pounds | | Manufacturer | Rockford Fosgate | | Mfr Part Number | T400-4 | | Model Number | T400-4 | | Number of Items | 1 | | Unit Count | 1 Count | | Warranty Description | 2 year parts and laborand labor. | ## Product Details - **Brand:** Rockford Fosgate - **Item dimensions L x W x H:** 13.66 x 8.14 x 2.14 inches - **Manufacturer:** Rockford Fosgate - **Mounting Type:** Car Mount - **Voltage:** 12 Volts ## Images ![T400-4 - Image 1](https://m.media-amazon.com/images/I/61F77Z2CgQL.jpg) ## Questions & Answers **Q: Is that silvery product picture correct? The description shows an entirely different product (which matches the manufacturer's website)** A: This amp says T400-4 on the face. Although the amp that I had has a completely different look. I think this may be an older design of the RF amps. Power series are good amps and the only type I run... I have been running a Power 1050s since 2001. I don't even bother with Punch or even Prime series. **Q: My HU has 2.5v preamp votage. Setting amp gain at 6 or above gives me audible hiss at any volume. The higher the more. What should I do to get louder?** A: I had the same issue until I followed sonic electronix guide to Amp tuning. I followed the guide and the hissing stopped. Seems like I turned up the gain too much. At 75% volume on your HU, you shouldn't hear any hissing if no music is on or plugged in. In this case you tuned your amp correctly to your HU. To get it over with you can spend the money to have a professional do so, but I suggest you to follow up some guides on the internet. The sonicelectronix amp guide is a great guide for tuning your amp with your HU. Just Google guides and it will help you. **Q: Can I hook this up to 3000 watts?** A: No **Q: How many amps does it need?** A: Here is some information about the current draw of the T400-4 Recommended Fuse: 60 Amps Average Current Draw (13.8V Music): 30 Amps Max. Current Draw (13.8V Sinewave): 60 Amps Suggested Alternator: 75 Amps Thanks for your interest in Rockford Fosgate! ## Frequently Bought Together - Rockford Fosgate Power T400-4 400-Watt 4-Channel Amplifier - Rockford Fosgate Power T1000-1bdCP 1,000-Watt Class-BD with Constant Power Mono Amplifier - Rockford Fosgate Punch PEQ Equalization Remote --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/1617327-t400-4](https://www.desertcart.jp/products/1617327-t400-4) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-11*