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Technical Pro HB-3502U

3500W Peak Power, 2-Channel Digital Hybrid Amplifier with AM/FM Tuner, USB and SD Card Inputs

Discontinued
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This item has been discontinued

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Product Features

  • Digital Hybrid Amplifier, Preamp and Tuner
  • Max power output: 3500 watts
  • 110-220V Switchable
  • Low Tim. liner drive DC amplifier
  • 7.2 Channel up conversion
  • MP3, USB and SD card inputs
  • Powers up to 4 loudspeakers
  • Separate gain control for preamp and subwoofer
  • Digital fluorescent output display meter
  • AM/FM tuner with both manual and automatic tuning
  • 1 RCA for record line output
  • 2 Mono RCA for subwoofer outputs
  • 1 RCA for preamp output
  • 2 RCA Audio source inputs
  • Dual microphone inputs (1/4")
  • Microphone volume, bass, treble and echo controls
  • Removable rack-mount brackets
  • over heat, over current and mid voltage auto protection
  • Banana binding post to speakers output
  • iPod/MP3 Input with cable (not included)
  • Dimensions: 13"D x 19"W x 3.5"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Product History:

Technical Pro HB-3502U thumbnail
(newest, current model)
Technical Pro HB-3502 thumbnail
(previous model, replaced by Technical Pro HB-3502U)

Power Specifications

Number of Channels
This is the number of channels that the professional amplifier is designed to power.
Continuous Power @ 8 ohm
This is the continuous (RMS) power output of the amplifier at an 8 ohm impedance.
Continuous Power @ 4 ohm
This is the continuous (RMS) power output of the amplifier at an 4 ohm impedance.
Continuous Power @ 2 ohm
This is the continuous (RMS) power output of the amplifier at an 2 ohm impedance.
Continuous Power @ 8 ohm (Bridged)
This is the continuous (RMS) power output of the amplifier at a bridged 8 ohm impedance.
Continuous Power @ 4 ohm (Bridged)
This is the continuous (RMS) power output of the amplifier at a bridged 4 ohm impedance.
Total Continuous Power
This is the total continuous power rating (RMS) that the amplifier is able to output.
Program Power @ 8 ohm
This is the program power output of the amplifier at an 8 ohm impedance.
Program Power @ 4 ohm
This is the program power output of the amplifier at an 8 ohm impedance.
Max Power Output
This is the maximum power output of the amplifier through all of it's channels.
Total Max Power
This is the combined max power output of all the amplifier's channels.

Amplifier Specifications

Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

Frequency Response
The range of frequencies the amplifier will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
Input Sensitivity
This is the input sensitivity of the amplifier.
THD (Total Harmonic Distortion)
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
Voltage Gain
This is the voltage gain of the amplifier measured in decibels.
Cooling Options
These are the different cooling systems used in the amplifier to keep it cool.
Inputs
These are the type of input connections that the amplifier has.
Outputs
These are the types of output connections that the amplifier has.

Physical Specifications

Height
The height of the item, measured from top to bottom, in inches.
3.5"
Width
The width of the item from left to right (side-to-side) measured in inches.
19"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
13"
Weight (Pounds)
This is the weight of the item in pounds (lbs).
Rackmount Spaces
This is the total number of spaces that the preamplifier will occupy when mounted on a rack.

Specials with this Item

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
57%
4 Star
29%
3 Star
14%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.0
Value
4.4
Features
4.7
Design
4.6
Usability
4.6
JamesI

Canada

Overall
Durability
Value
Features
Design
Usability
Great Value

September 16, 2011

Powerful class d amp. High wattage and low distortion for the price paid. Can be used for home use. Versatile remote. Way more power than any home theater reciever costing 5 times more.

2 of 2 found this helpful

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Alexander

Owasso, OK

Overall
Durability
Value
Features
Design
Usability
Get what you pay for

January 6, 2014

Decent for the money with available options but sound quality is 7 out of 10.

0 of 0 found this helpful

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Alcides

Bronx

Overall
Durability
Value
Features
Design
Usability
Good deal

September 28, 2013

This amp got everything you need in one unit is a buy

0 of 0 found this helpful

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Tim

Wheeling, WV

Overall
Durability
Value
Features
Design
Usability
Technical Pro Amplifier

January 21, 2013

Why buy a more expensive amplifier when this one has all that you need .Great value. Good quality. It is everything that is featured to have.Performance couldn't be better! I wouldn't hesitate to recommend it to anyone. Couldn't be anymore pleased!

0 of 0 found this helpful

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BigDutch

Canada

Overall
Durability
Value
Features
Design
Usability
HB-3502U

December 4, 2012

Awesome amp for the price, I bought it to drive my klipsch RF-7refrence speakers and the amp provides more than enough power to make them punch!!

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ramtohulv

Great Britain

Overall
Durability
Value
Features
Design
Usability
Technical Pro HB-3502U

October 12, 2012

I've been watching this product for some time and a recent offer used/like new from Amazon prompted me to invest. First don't drop it on your foot, you'll need a new one! I'm astounded by this amplifiers performance. For the price nothing comes near it. Well done Technical pro! I'm using it with a pair of tannoy dc6 revolution speakers and pyle pro equalizer. The sound is outstanding.... 5 stars. Go for it guys.

0 of 0 found this helpful

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nelson

silver spring, MD

Overall
Durability
Value
Features
Design
Usability
this amplifier

February 15, 2012

Very easy to use even if your volume is a little devil. Gives more strength even when connected to a mixer.

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Product Summary

Manufacturer

Model Number

HB-3502U

UPC

859789005399

Weight

24.00lbs

Internal SKU

hb3502u

Internal Product ID

25803

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Technical Pro HB-3502U