Skip to the content
Family of Brands:
Search for products
Search
Log in
Open mini cart
Car Audio
Speakers
Subwoofers
Tweeters
Amplifiers
Processors
PRO Audio
Midrange
Tweeters
Component Sets
Portable Audio
Accessories
Archive
Software
Become a Dealer
About Us
Contact Us
Guarantee & Shipping
Privacy Policy
Car Audio
Speakers
Subwoofers
Tweeters
Amplifiers
Processors
PRO Audio
Midrange
Tweeters
Component Sets
Portable Audio
Accessories
Archive
Software
Become a Dealer
About Us
Contact Us
Guarantee & Shipping
Privacy Policy
Skip to product information
Open media 1 in modal
Open media 2 in modal
Open media 3 in modal
Open media 4 in modal
Open media 5 in modal
Open media 6 in modal
Open media 7 in modal
Load image 1 in gallery view
Load image 2 in gallery view
Load image 3 in gallery view
Load image 4 in gallery view
Load image 5 in gallery view
Load image 6 in gallery view
Load image 7 in gallery view
Quantum
QA4-2000 : 4-Channel Class A/B Amplifier
💥 New 2025 💥
Regular price
$169.98 USD
Lease to own
Pay as low as
$/week
Get Pre-approved! No Credit Required!
−
Decrease quantity for QA4-2000 : 4-Channel Class A/B Amplifier
Quantity
+
Increase quantity for QA4-2000 : 4-Channel Class A/B Amplifier
Add to cart
This item is a recurring or deferred purchase. By continuing, I agree to the
cancellation policy
and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.
Features
4 Channel Full Range Class AB Circuitry
2Ω Stereo load Capability
Low level RCA inputs
Variable Crossover: HPF/LPF/Full
Bridgeable outputs @ 4Ω load
Compatible with any 4/2Ω Loudspeaker
High Efficiency Mosfet Design
Q-Sink Heat Management System
Specifications
4 X 125 Watts @ 4Ω
4 x 250 Watts @ 2Ω
2 x 500 Watts @ 4Ω (Bridged)
Bandwidth : 18Hz - 22KHz
Input Sensitivity: 200Mv – 8V
Crossover filter slope in Stereo: 12dB
Channel 1-2 HP filter range: 32 Hz - 2 KHz
Channel 3-4 HP filter range: 32Hz - 2KHz
Channel 3-4 LP filter range: 50Hz - 250Hz
Minimum Load : 2
Ω
Stereo / 4Ω bridged
DIMENSIONS
L = 10.55"/ 268 mm
W = 7.09"/ 180 mm
H = 2.24"/ 57 mm
Description
Recommended Products
Quantum
QRX4001 : Mono Class D Amplifier
Quantum
QRX1504 : 4-Channel Class D Amplifier
Quantum
QRX2501 : Mono Class D Amplifier
Amplifiers - Quantum
Amplifiers - Quantum
Shop Amplifiers - Quantum
