ZAPCO Z-AP Audiophile Series - Z-150.4 AP

The Zapco Audiophile Class AB Competition Series amplifiers, which include the Zapco Z-150.4 AP 4-channel amplifier, represent the ultimate Zapco Sound Quality Series. 

For the supply area, Zapco had its own electrolyte caps manufactured according to Zapco's specifications. In the signal path, Zapco has replaced the electrolytic capsules with high-quality WIMA polycapsules. Zapco also used a new low-noise audio operational amplifier for the input stage and the most linear audio operational amplifier for the signal path. The output drivers have been doubled and the operating voltage of the matched terminals has been increased. To dissipate heat from the output components faster and increase efficiency, a new insulation material developed for the aerospace industry has been used. In the differential input stage, 0.1 % resistors are used to ensure the lowest possible fundamental frequency. This is rounded off by a patented, multi-earthed RCA plug with extra heavy gold plating for perfect signal transmission. The connection panel also features low-noise gain potentiometers with detents to make level adjustment child's play.

All the high-end technology has also been given a high-end look, with a matt black finish and a solid copper plate with the logo and serial number directly on the front.

The result: the ultimate SQ amplifier. With the best possible, purest sound quality and at the same time a signal-to-noise ratio of over 110 dB, so that you get pure sound quality even in the quietest musical passages.

• Low distortion and a signal-to-noise ratio of over 110 dB
• Coupled output drivers
• Highest HFE (gain) Sank selected output devices
• Deferential symmetrical input stage
• 0.1% resistors for lowest noise floor
• TI LME49720 (BJT) operational amplifier at the inputs
• TI LME49720 (BJT) operational amplifier in the signal path
• WIMA caps of the MKS2 series in the signal path
• Extremely low ESR caps throughout
• Proprietary patented RCA connectors

• Audiophile 4-channel class AB amplifier for the competition
• Signal-to-noise ratio of over 110 dB
• Coupled output drivers
• Highest HFE (amplification) Sank selected output devices
• Differential symmetrical input stage
• 0.1% resistors for lowest noise floor
• TI LME49720 (BJT) operational amplifier at the inputs
• TI LME49720 (BJT) operational amplifier in the signal path
• WIMA caps of the MKS2 series in the signal path
• Extremely low ESR caps throughout
• Proprietary patented RCA connectors

• Power @ 4Ω: 4 x 150 watts RMS
  
• Power @ 2Ω: 4 x 250 watts RMS
  
• Power @ 4Ω bridged: 2 x 500 watts RMS
  
• THD @ Nennleistung < 0,05%
  
• Signal-to-noise ratio > 110dB
  
• Frequency response 10 Hz to 30,000 Hz ±1 dB
  
• Input sensitivity 1v to 9v
  
• Dimensions in mm: 190(W) x 62(H) x 479(L)