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Opus 4 KT88/99 Push Pull Mono Blocks

Opus 4 webOPUS 4 MONO BLOCKS

45 watts parallel push pull – 4 X KT88/KT120 mono amplifier

A single channel mono block amplifier designed for stereo systems and can be used as discreet single channle drivers in surround systems. You can take that harsh penetrating sound found in so many home video systems and replace it with power and grace, turn up the volume without audio stress.

Upgraded version available for quality stereo systems with audio capacitors and split bobbin multi section output transformers with a solid state choke filtered power supply.

The audio version can also be Triode coupled  for the ultimate in graceful presentation.  The audio visual version can be Pentode coupled for the power, dynamics and slam needed for movies.

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SPECIFICATIONS:-

POWER: 50 WATTS         

TYPE: PUSH PULL  KT 88, AND KT120

FREQUENCY  RESPONSE @1 WATT:  5 HZ TO 65 KHZ + – 0.5db

FREQUENCY RESPONSE @FULL POWER:  15 HZ TO 45 KHZ + – 1db

INPUT SENSITIVITY:  550 mv

INPUT IMPEADANCE: 180 K     

OUTPUT IMPEADANCE:  6 OHMS

NOISE AT SPEAKER TERMINALS:  TYPICALLY  LESS THAN 1.5 mv

FEEDBACK:  6 db

BIASING: CATHODE

CONSTRUCTION: HYBRID PCB/ HARD WIRED

COMPONENTS:  RESISTORS 1% METAL OXIDE, CAPACITORS LOW INDUCT. LOW ESR, COUPLING CAPS MKP

TRANSFORMERS: MULTI SECTION SPLIT BOBBIN

RECTIFIER:  SOLID STATE

DRIVERS: ECC 88 AND ECC 82

HEATERS: AC CTR TAPPED

SET UP:  NO SET UP IS REQUIRED, BUT VALVES MUST BE MATCHED

SIZE: 6 ¼ inches wide, 18 ½ inches deep, 9 ½ inches high  

WEIGHT: 12 kg