Is that silvery product picture correct? The description shows an entirely different product (which matches the manufacturer's website)

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.

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?

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.

How many amps does it need?

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!

Power T400 4 400 Watt 4 Channel Amplifier

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Description

⚡ Power Meets Precision — Amplify Your Drive Like a Pro

CUTTING EDGE THERMAL TECH - Stay cool under pressure with Dynamic Thermal Management and MEHSA3 heat dissipation, ensuring relentless performance anywhere.
ROCKFORD FOSGATE RELIABILITY - Built tough with premium components and backed by a 2-year warranty—join the elite who demand the best.
FLEXIBLE 2 OR 4 CHANNEL SETUP - Customize your audio experience effortlessly—perfect for front/rear stereo or dedicated subwoofer amplification.
PRECISION BASS TREBLE CONTROL - Dial in your sound with +18dB Punch EQ at 45Hz and +14dB boost at 12.5kHz for that perfect punch and sparkle.
UNLEASH 400 WATTS OF PURE POWER - Dominate your soundscape with crystal-clear, high-fidelity output that keeps your system booming without distortion.

The Rockford Fosgate Power T400-4 is a compact yet mighty 400-Watt 4-channel Class A/B amplifier designed for audiophiles who demand flexible, high-fidelity sound. With advanced thermal management technologies and versatile channel configurations, it delivers clean, distortion-free power whether driving front/rear speakers or bridged subwoofers. Its patented Punch EQ and Butterworth crossover let you tailor bass and treble precisely, while Rockford Fosgate’s legendary build quality ensures durability and reliability backed by a 2-year warranty.

Specifications

ASIN	B0012Q9976
Best Sellers Rank	#215,036 in Electronics ( See Top 100 in Electronics ) #537 in Car Multichannel Amplifiers
Brand	Rockford Fosgate
Built-In Media	T400-4
Customer Reviews	4.4 out of 5 stars 66 Reviews
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
Unit Count	1.0 Count
Warranty Description	2 year parts and laborand labor.

Reviews

B**B

4.12.2011

A**I

28.02.2012

K**7

7.09.2013

P**5

20.09.2014

D**Y

5.03.2012

K**R

14.04.2012

S**S

18.01.2012

T**.

29.10.2021

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