Change capacitors
Quad 34 Preamplifier
Number 17644 manufactured between 1986 and 1987





Symptoms: faulty interference suppressor, noises when the preamplifier is switched off.
Restitution lacking in dynamism. If you want to have a device that is musical, do not hesitate a second because the simple fact of changing this type of component will radically transform your device. It will be a rediscovery of your favorite records!
DIY - Change capacitors
Preferably choose capacitors (105°c).





A faulty RIFA suppressor capacitor!
RIFA Capacitor PME271M Series / MP Type (Metallized Paper Film Capacitor) Class X2:
for direct use on 230VAC mains (IEC 60384-14)
List of new capacitors.
Names | Capa µf | Volts | Temp (°c) |
C10 | 100 | 35 | 105 |
C11 | 100 | 35 | 105 |
C16 | 100 | 35 | 105 |
C17 | 100 | 35 | 105 |
C18 | 2.2 | 63 | 85 |
C22 | 2.2 | 63 | 85 |
C30 | 100 | 35 | 105 |
C31 | 100 | 35 | 105 |
C48 | 100 | 35 | 105 |
C54 | 100 | 35 | 105 |
C57 | 100 | 35 | 105 |
C58 | 22 | 100 | 85 |
C59 | 100 | 35 | 105 |
C69 | 100 | 35 | 105 |
C74 | 1000 | 35 | 105 |
C77 | 100 | 35 | 105 |
C78 | 100 | 35 | 105 |
C84 | 22 | 100 | 85 |
C89 | 100 | 35 | 105 |
C90 | 100 | 35 | 105 |
C91 | 100 | 35 | 105 |
N1 RIFA | 0.047 + 100R | 275 |