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DB4.4 Class A/B 4/3/2 Channel Bridgeable Stereo 12v Power Amplifier 840w Verified RMS Power Output

World RRP: £198.99


Product code: DB4.4

With the DB4.1 as a smaller option and the BLACKDB4.1 as a Class D alternative the DB4.4 is our high power 4 channel amplifier in traditional Class AB format. The unit is cased in the same heatsink design as the DB2.2, DB1.3 and DB1.4 and has a full complement of controls including a versatile band pass filter with 300Hz low pass reach (allowing, for example, an active midbass setup etc) on both sets of channels. With awesome output power, smooth, musical sound and unmatched versatility the DB4.4 is a terrific complement to the biggest audio systems.

Version History

V1- Delivered to market Q3 2017 the DB4.4 is an all new design, drawing from our experience with the DB2.2 and DB1.3. The factory is very experienced at producing high quality products and the DB4.4 will deliver high power and repeatable performance consistently from its professional grade board and architecture. V2 - A revised circuit board is already on the drawing table to make small but incremental improvements in efficiency. We will also change the power connections to 0 AWG (aesthetic reasons only) and the colour of the hardware will be silver not gold. This is a drawing only at this stage.



Key Facts

Product Category Amplifiers
Version 1
Series Hammer
Date Added 07/11/2017
Date Modified 02/09/2021
Barcode 683422302169
Production Status Discontinued
Product Net Weight (g) (For Pairs/Sets Weight Is All Major Parts) 4426
Product Height (mm) 55
Product Length (mm) 410
Product Width (mm) 242
Complete Product Pack Weight (g) 4940
Retail Carton L (mm) 470
Retail Carton W (mm) 280
Retail Carton H (mm) 95
Warranty (Months) 12
Sold As Single

Amplifier Data

Genuine Useable RMS Power, 4Ohm (Watts), < 1%THD, 14v 140x4
Genuine Useable RMS Power, 2Ohm (Watts), < 1%THD, 14v 210x4
Genuine Useable RMS Power, 4Ohm Bridge (Watts), < 1%THD, 14v 410x2
Frequency Response (Hz) 10-25000
THD Continuous 4 Ohm 1Khz/100Hz (%) <0.04
Signal To Noise Ratio (db) >99
LPF (Hz) 40-300 (+BPF 40-3000)
HPF (Hz) 50-3000
Bass Boost (Db) 0-10
Boost Frequency (Hz) 40
Audio Signal Input Voltage (V) 0.2-6
LPF Slope (Db/Oct) 12
HPF Slope (Db/Oct) 12
Amplifier Topology Class A/B
Amplifier Strappable? Not Recommended - No Warranty No
Fuse Rating (Amps) 4x20
Power Wire Input Gauge (AWG) 4
Recommended Wiring Kit and Accessories PWK4.1 RCA5.1
Minimum Recommend Final Load Per Channel (Ohms) 2
Channel Separation (Db) >60

Extended Amplifier Data

Verified RMS 14.4V Per Channel 4Ohm (Watts)@(THD), (Amps), (Version) 139@0.1%,56.7(V1)
Verified RMS 14.4V Per Channel 2Ohm (Watts)@(THD), (Amps), (Version) 206@0.1%,105.4(V1)
Verified RMS 14.4V Bridge 4Ohm (Watts)@(THD), (Amps), (Version) 410@0.1% (V1)
Verified RMS 13.8V Per Channel 4Ohm (Watts)@(THD), (Amps), (Version) 127@0.1%,54.4(V1)
Verified RMS 13.8V Per Channel 2Ohm (Watts)@(THD), (Amps), (Version) 196@0.1%,99.8(V1)
Verified RMS 13.8V Bridge 4Ohm (Watts)@(THD), (Amps), (Version) 391@0.1% (V1)
Verified RMS 12.5V Per Channel 4Ohm (Watts)@(THD), (Amps), (Version) 107@0.1%,49.3 (V1)
Verified RMS 12.5V Per Channel 2Ohm (Watts)@(THD), (Amps), (Version) 163@0.1%,91.2 (V1)
Verified RMS 12.5V Bridge 4Ohm (Watts)@(THD), (Amps), (Version) 327@0.1% (V1)

Technical Highlights

  • High Fidelity Class A/B Topology
  • O.P.S. Oversized Power Supply
  • Variable Bass Boost
  • Soft Turn On/Off
  • 2 Ohm Stable Stereo / 4 Ohm Bridged
  • Low THD Audiophile Components
  • T.D.O.S. Amplifier Protection Circuitry
  • Up To 6V Ready Pre Amp Input Stage
  • Thermally Efficient Heatsink Coating
  • Variable Low Pass Crossover
  • Variable High Pass Crossover
  • Band Pass Crossover
Technical Highlights

What's In The Box?

  • 1 x High Power 4 Channel Amplifier
  • 4 x Self tapping screws
  • 4 x 20A Spare Fuses