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Sundown Audio SIA-2500D

2500W RMS Class D SFB Series Monoblock Car Amplifier

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• 2000 watts x 1 channel @ 4 ohm
• 2500 watts x 1 channel @ 2 ohm
• 2500 watts x 1 channel @ 1 ohm
• Total RMS Power: 2500 watts
• Class D 1 ohm Stable Monoblock Amplifier

Learn more about the sia2500
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Description


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Sundown SIA-2500D

Delivering tremendous power at 1, 2, or 4 ohms, the Sundown SIA amps are built with power and stability at their core. These full-bridge amplifiers feature a heavy heatsink for outstanding thermal management, while the three-speed Smart Cooling fan and advanced power supply design protects the amplifier from overheating and distorted output. Made to bang all day long, by the world champions of bass!


Product Details:

  • SFB Series Class D 1 ohm Stable Monoblock Amplifier
  • RMS Power Rating:
    • 4 ohm: 2000 watts x 1 channel
    • 2 ohm: 2500 watts x 1 channel
    • 1 ohm: 2500 watts x 1 channel
  • Total RMS power output: 2500 watts
  • Power, protection and clipping LED indicators
  • Wired bass level remote control with clipping indicator included
  • 4-way protection circuitry (thermal, voltage, speaker short and DC offset protection)
  • Dual MOSFET PWM power supply
  • Advanced 3-speed smart cooling fan design
  • Intelligent full bridge design
  • Input sensitivity:
    • Low level: 5 volts maximum
  • Signal to Noise Ratio: 108 dB
  • Variable low-pass filter: 40 - 20000 Hz
  • Variable high-pass filter: 10 - 1000 Hz
  • Variable Bass Boost: 0 - 12 dB
  • Fuse Rating: 220A
  • Dimensions: 7.25" L x 7.25" W x 2.45" H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • MFR #: SIA-2500D

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Specifications & Details


Key Features
Amplifier Key Features
Bass Boost
Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
2000 watts x 1 channel
RMS Power @ 2 ohms
2500 watts x 1 channel
RMS Power @ 1 ohm
2500 watts x 1 channel
Amplifier Specifications
Series
SFB Series
Amplifier Class
D
Number of Channels
1 - Mono
Total RMS Power Output
2500 watts
Minimum Impedance Unbridged
1 ohm
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
10 - 1000 Hz
Low-Pass Crossover Frequency
40 - 20000 Hz
Signal-to-Noise Ratio
108 dB
Bass Boost
0 - 12 dB
Remote bass/level controller
Yes
Total Fuse Rating
220A
Amp Bluetooth Connectivity
No
Hi-Res Certified
No
Low-Level Input Sensitivity
5 volts maximum
What is in the box?
Paperwork
User manual
WITB: Amplifiers
Amplifier
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

A-SIA2500

Weight:

5.40lbs

Internal SKU:

sia2500

Internal Product ID:

206369

Customer Ratings & Reviews



5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Gives me what I wanted!

Very good amp! Was able to push my sub to how I wanted, very clean design and great power. If you are looking for a budget friendly sundown amp the SIA series is the best choice!

By Angel on June 28, 2025 Checkmark Icon Verified purchase


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