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DB4.3 4/3/2 Channel Class D Bridgeable Stereo 12v Micro Power Amplifier 200w Verified RMS Power Output

World RRP: £139.99


Product code: DB4.3

The DB4.3 offers extremely high performance in a small package. Moving on from the DB4.2 this model is barely larger and yet manages to sound significantly fuller and more resolved. The terminal sections have also been dramatically improved as have the controls.

Technical Highlights

  • SMD Technology For Ultimate Reliability
  • Highly Efficient Class D Amplifier Architecture
  • Extremely Compact Form Factor 
  • K3 Logic Circuit Super Wide 10hz-30khz Range
  • 4 Ohm Stable Stereo / 4 Ohm Bridged
  • Latest Version Of Our Tiny Sized 4 Channel Amplifier
  • Low THD Audiophile Components
Technical Highlights



What's In The Box?

What's In The Box?
  • 1 x 4 Channel Class D Micro Amplifier
  • 1 x High Level Input Plug
  • 1 x Spare 30A Fuse
  • 4 x Self tapping screws
  • 2 x Allen Keys

Version History

Prototype – Using the DB4.2 as a benchmark we designed a new model to incorporate the best quality IR2093 transistor platform with SMD technology. V1 – Power ratings to remain similar to DB4.2 but audio quality will be significantly better than the DB4.2 to justify the higher price point of the 4.3. Was originally intended to be launched as bluetooth but we were unhappy with the software and so we deleted this from the specification until we can see revisions. V1 – Production was initiated to a final design in Q3 2017 with first customer deliveries in early Q1 2018. The sonic performance of the DB4.3 exceeds expectations with musical performance that belies its class D architecture. Heat is well controlled and the high level inputs work very well indeed. Please note strange wiring of rear high level input, mentioned in instruction manual.

Key Facts

Product Category Amplifiers
Version 1
Series Support Crew
First Added 04/11/2016
Last Modified 22/09/2020
Barcode 683422302046
Production Status Discontinued
Product Net Weight (g) (For Pairs/Sets/Major Parts) 1050
Product Height (mm) 43
Product Length (mm) 189
Product Width (mm) 133
Complete Product Pack Weight (g) 1150
Warranty (Months) - Private Enjoyment Use Only 12
Sold As Single

Related products

Amplifier Data

Genuine Useable RMS Power, 4Ohm (Watts), < 1%THD, 14v 50x4
Genuine Useable RMS Power, 4Ohm Bridge (Watts), < 1%THD, 14v 180x1 + 50x2
LPF (Hz) 40-400
HPF (Hz) 40-400
LPF Slope (Db/Oct) 12
HPF Slope (Db/Oct) 12
Amplifier Topology Class D
Fuse Rating (Amps) 30
Power Wire Input Gauge (AWG) 8
Recommended Wiring Kit and Accessories PWK8.1
Minimum Recommend Final Load Per Channel (Ohms) 4

Extended Amplifier Data

Verified RMS 14.4V Per Channel 4Ohm (Watts)@(THD), (Amps), (Version) 50@1%
Verified RMS 14.4V Bridge 4Ohm (Watts)@(THD), (Amps), (Version) 180
Verified RMS 13.8V Per Channel 4Ohm (Watts)@(THD), (Amps), (Version) 50