ID | Function | Original part | Qty | What Naim have recently used for service | What others recommend | Closest to original easily available | Closest to Naim service easily available | Alternatives |
C1 | CD/Phono section signal input dc blocking | Panasonic? 10uF 35V tantalum bead 5mm pitch | 2 | Kemet 10uF 35V tantalum bead 5mm pitch | Any branded 10uF 35V tantalum bead | Kemet T354G106K035AS 10uF 35V 10% tantalum bead 6.35mm pitch | As original | AVX TAP106K035CRW 10uF 35V 10% tantalum bead 5mm pitch |
C73 & C74 | Preamp regulator filtering | 2 | ||||||
C3 | CD/Phono section feedback | Roederstein EB1 47uF 25V axial | 2 | Sic Safco PROSMIC C031 47uF 40V axial | Elna Silmic II, Nichicon UKZ or UKW | Vishay BC MAL203138479E31 47uF 63V 10% axial | — | Nichicon UKW1E470MDD1TA radial |
C5* | Phono section feedback | 2 | ||||||
C75 | Relay delay | 1 | ||||||
C7 | CD/Phono section power rail decoupling | Roederstein EB-xxx1 47uF 25V axial | 2 | Sic Safco PROSMIC C031 47uF 40V axial | Nichicon UKZ or UKW | Vishay BC MAL203138479E31 47uF 63V 10% axial | — | Nichicon UKZ1H470MPM6 47uF 50V 20% 5mm pitch radial |
C8 | CD/Phono section signal output dc blocking | Rubycon TWSS5 10uF 50V radial | 2 | — | Nichicon UKZ or UKW | Rubycon 50PK10MEFC5X115 10uF 50C | — | Nichicon UKW1H100MDD |
C11 & C13 | Preamp signal dc blocking | Rubycon TWSS5 10uF 50V radial | 4 | — | Nichicon UKZ or UKW | Rubycon 50PK10MEFC5X115 10uF 50C | — | Nichicon UKW1H100MDD |
C19& C20 | Power amp signal | Rubycon TWSS5 10uF 50V radial | 4 | — | Nichicon UKZ or UKW | Rubycon 50PK10MEFC5X115 10uF 50C | — | Nichicon UKW1H100MDD |
C12 | Preamp feedback | Roederstein EKI2 47uF 40V radial | 2 | — | Elna Silmic II, Nichicon UKZ or UKW | — | — | Nichicon UKZ1H470MPM 47uF 50V 20% 5mm pitch radial |
C14 | Preamp power rail decoupling | Roederstein EKI2 47uF 40V radial | 2 | — | Nichicon Muse UKZ | — | — | Nichicon UKZ1H470MPM 47uF 50V 20% 5mm pitch radial |
C17 | Power amp signal | Panasonic? 47uF 6.3V tantalum bead | 2 | Kemet 47uF 6V tantalum bead 5mm pitch | Any branded 47uF 6.3V tantalum bead | Kemet T356F476K006AT 47uF 6.3V 10% 5mm pitch | As original | AVX TAP476M006SCS 47uF 6.3V 20% tantalum bead 5mm pitch |
C72 | Preamp PSU smoothing | Samwha SA 3300uF 25V axial3 | 1 | Nichicon TVX 3300uF 25V axial3 | — | — | — | CDE / Illinois Capacitor 338TTA025M3 3300uF 25V axial |
C70 & C71 | Power amp PSU smoothing | Rubycon USP?4 6800uF 25V snap in 85C | 2 | Kemet ALC20A103DC040 10,000uF 40V snap in | Kemet ALC10A103DC040 | Rubycon 25USG6800MEFCSN22X254 6800uF 25V snap in 85C | Kemet ALC10A103DC040 10,000uF 40V snap in | — |
Total cost | ||||||||
Notes:
*. C5 is not present in the CD-input version.
1. Roederstein bought out by Vishay, Vishay Roederstein EB replacement shown as Vishay 030/031 AS, 041 ASH series, MAL203138479E3 is 031 AS series replacement.
2. Roederstein bought out by Vishay, Vishay Roederstein EKI shown as having no direct replacement in the Vishay range.
3. Samwha SA series is obsolete, no axial replacement, specification unavailable. Naim service replacement Nichicon TVX is obsolete, no axial replacement, specification available. Nichicon TVX specification has been compared with CDE / Illinois Capacitor 338TTA025M for close match.
4. Rubycon snap in PSU caps were probably USP series or a predecessor series, 6800uF 25V 85C. Either way this range is obsolete and replaced by the USG series. The USG series is not in stock from Mouser but Digikey have it while stocks last.
5. Rubycon TWSS series are obsolete. They were a low voltage, general purpose series. The current equivalent would be the Rubycon PK or PX series.
6. On some Nait2s, Nobeone’s included, C7 were fitted with Roederstein EKI2 47uF 40V radial, the same role but in a different section of circuit as the C17, hence the alternative suggestion for the same replacement Nichicon Muse.