• Technical Specifications



The professional amplifier series without output transformer is of high performance and excellent sound quality
It can be applied to installations for small hotels, supermarkets or schools.


  • Output 4Ω / 70V / 100V without output transformer
  • Choose 4Ω / 70V / 100V output by switch
  • Each channel has separate balanced input (XLR)
  • Each channel has separate volume control
  • Choose MONO or DUAL output by switch
  • Choose full range output or L/H CUT
  • DC 24V power supply
  • Each channel has separate indicator for SIG.4Ω. 70V. 100V. PRO
  • Temperature protection / overload protection / DC protection


MODEL 250.2D / 250.4D
Power Output (1KHz / 4Ω) RMS 250W x 2 (AC 230V) / 250W x 4
Max. 65Wx2 (DC 24V) / 65W x 4
Frequency Response L/H COT OFF 20Hz-20KHz (±1dB)
L/H COT ON 200Hz-10KHz (±1dB)
Power Supply AC 115V / 230V 50Hz/60Hz
Inputs (balance/1KHz)0 0±1.5dBv
Maximum Input (balance/1KHz) 10dBv±1KHz
THD+N (1KHz/-3dBv) <0.1%
S/N Ratio >95dB
CMRR(balance/1KHz) >60dB
Crosstalk (1KHz) >60dB
Outputs 4Ω / 70V / 100V switchable
Dimension (WxDxH) 434 x 353 x 88.5 mm (17.1″ x 13.9″ x 3.5″)
Weight (Approx.) 7.95 kg