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Overview
The Velocity Double Trouble 8 Channel Harley Street Glide 2 Amplifier Combo Has All of the Power and Flexibility You Need
We designed the RZA1000.4 amplifiers to perform in pairs when installed in a Batwing fairing. With 2.2 kilowatts and 8 channels of output, you will have so much power on tap that you will be able to drive an insane scale sound system without having to put amplifiers in the bags or tour pack. This makes the installation much simpler and it also dramatically reduces the cost of your installation. Amplifiers made for your Harley Street Glide, Electra Glide and Ultra Limited means that this amplifier array fits your bike and that you will not have to cut things up or get out the pry bar and big hammer just to get your shiny new amplifiers in the bike. They simply fit! Velocity amplifiers are the nicest amplifiers out there, and they also absolutely cost less once you subtract the expense and time required (extra wiring, cutting, and parts needed) to make multiple inferior amplifiers do the same task. This makes the Velocity Double Trouble SG-2200.8 Harley amplifier package a much better value for your dollar. Better sounding, big power, easier installation, lower weight, and ultimately lower cost. Go big with your Harley Street Glide, Electra Glide or Ultra Limited sound system.
Fitment
- 2014 and later Harley Street Glide. Electra Glide, and Ultra Limited
Warranty
- 2 Year Standard
- 3 Year If Installed by Authorized Direct Velocity Retailer
Features
Extreme Level Performance
Street Glide
- No Modifications Required! - Made for 2014 - 2023 Street Glide, Electra Glide, Ultra Limited fairings
- Ultimate Sound Quality - Better Gain pots, better power supply coils, better output transistors, better crossovers, and a better remote turn-on circuit are just a few of the reasons why these amplifiers sound amazingly better than other amplifiers.
- Super Wide Input Range - 0.41 Volt Line Level (RCA) to 10 Volt Balanced (speaker level) Input. These amplifiers will accept direct analog input from any radio (aftermarket or factory) without needing line levelers or funky adapters.
- Soft Turn On Circuit - no pops!
- Full Chassis Heat Sink - No sheet metal here on the top and bottom. This means you are free to mount these amplifiers in any orientation without ever worrying about heat issues.
Flash Your Bike Yourself and Be Sure That the Job Is Done Right
Our flash tool rental kit ships with all of the parts required to flash any Harley touring bike radio from 2014 - current year. The kit ships with a return shipping label for your convenience. After you are finished with the tool simply drop it in the mail and receive a full refund for your $200 deposit.
$120.00 Value!
Specifications
- 8 x 275 Watts RMS @ 2 Ohms
- 8 x 150 Watts RMS @ 4 ohms
- 4 x 550 Watts RMS @ 4 Ohms
- Frequency Response 20 Hz - 25 Hz
- Crossover High/Low Pass 40hz - 400hz @ 12db
- Signal Input Range .41V - 10V Balanced High & Low Level
- RCA Input - Yes
- Speaker Level Input - Yes (over RCA connection)
- Remote Trigger 12V or Signal Sense
Dimensions
- 9.1" L x 4.1 W x 1.54 H
Dimensions are for a single amplifier. This kit contains two amplifiers.
What's Included
- (2) Velocity RZA1000.4 Four Channel Amplifiers
What's Not Included
- Power kit
- Radio interface
Bread Pay

Snap Finance
Perfect way to pay within 100 days with no credit history required and no hard credit check. We cover the financing fees for you as long as you pay off your purchase within 100 days. So there are no hidden fees. Apply without any impact on your credit score.

100 Day same as cash financing
Shipping information
Most items ship in 24 hours (83% on average), some items do have a lead time due to manufacturing and tech oversight. All orders are processed and built in the order in which they are received. This allows our experts to review every order and check that it is correct for your specific bike. This means that sometimes you might have to wait a little longer to receive your order, but it’s always worth it!
Returns information
Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We’ll get you a replacement or refund in a snap! You can find our refund policy here.
Lead Time
Some items have a longer lead time due to custom assemblies and requirements for tech oversight before shipping. We do our best to add estimated lead times directly to the product page for these items as well as inform our customers over the phone. All items in an order will generally ship together, so if you have one or more items that have longer lead times the other items in your order will usually ship out as soon as all parts are assembled and inspected. Please do not plan the ride of your life around the estimated shipping times of your stereo equipment :)

Easy Returns
Simply contact us for a return Authorization number and send your item to our returns center for fast processing. We’ll get you a replacement or refund in a snap! You can find our return policy here.

your part is guaranteed to fit
We test fit every part we sell on actual bikes in order to verify fitment on each moden, generation, and in each possible location. You can be sure that if we have stated that a part fits your bike, that it will, or your money back. You will find model, year, and location fitment details on most product pages.

We thoroughly test every part we sell on a real bike
There are a lot of parts out there that we refuse to sell. If it’s not up to our high standards, it never makes it to this website. We have parts that fit various budgets and levels of insanity, but all parts we carry are exceptional performers.

WE ARE FULLY AUTHORIZED RETAILERS FOR ALL BRANDS WE SELL
There are only a select few authorized online retailers for the brands we sell. Most all online retailers (even the really big ones) are not authorized at all! And the manufacturer’s warranty is void before you even get your items.

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You can rest easy - your personal details are never shared, sold, or rented to anyone either.