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NAD C300 Integrated Amplifier
work done:All smaller power caps replaced with Panasonic FM/FCMain smoothing caps replaced with Elna for AudioInput caps replaced with Wima
Mains filter addedClass A driver board audio path caps replaced Wima/PolystyreneOther audio path caps replaced with Film/Elna Cerafine/Nichicon Muse
Preamp module audio path caps replaced with Wima/PolystyreneOak Isolation feet added
Nad C300 old gold. I first heard this when a customer had problems and also wanted upgrades. After basic mods I was stunned at the quality from this amp!
It uses a Class A driver stage which produces very little distortion compared to normal amplifiers for a more natural and fluid sound which then driver high quality MOSFET output transistors which are heavily biassed.
The sound can be described as rich and smooth. The high and low extensions are just stunning with a very smooth and detailed overall sound. Music sounds very warm and highly enjoyable with an immediate toe tapping effect!
As stock (not upgraded) sounds a bit bland but I could hear the potential and that’s when upgrades began to fully open the sound up to something that can be easily compared to some of the best amps I have personally upgraded around the same price bracket including my world best Mission Cyrus one (sold 2 of them actually)
I upgraded all the input caps (Disc, CD, Video, Aux,Tuner) with high grade Wima’s that are literally 100x better than the ceramics that were in there before for a better frequency response. I then replaced all the old aged low grade smaller power caps with super grade Panasonic FM/FC series that are rated at 105 degrees. Not only do they last long but provide a very clean power supply. I also replaced the 2 large main smoothing caps with Audiophile grade Elna for audio. This contributes massively to a crisp sound output!
I then removed the preamp and the 2 Class A poweramp modules and upgraded all the audio path caps to audiophile grade Wima and Polystyrene. This was very crucial to ensure excellent frequency response across the board and not just at the inputs/outputs. An amp is only as good as the weakest component!
I then traced the whole amp to find other audio path caps and upgraded where necessary and replaced with high grade Film type/Wima and also Elna Cerfaine’s.
I fitted a super grade mains filter to get rid of unwanted mains noise and also added raised Oak Isolation feet to not only absorb unwanted vibrations which affect the sound quality but also allow some more air circulation under the amp. And they look far better!
All the pots were chemically cleaned. The bias and DC was adjusted according to the manufactures specifications.
A lot of caps were replaced which mounted up to a small fortune but the results are well worth it as the sound is just stunning!
The amp is rated at 25 watts but can actually output 40 amps of power!! I don’t think I have read a single bad review of this amp and many claim in reviews it can handle large floor standing speakers. Its output power is greater than a poweramp I sold at 60 watts which only had 35 amps of current!
I would say this little Nad C300 upgraded is in a completely different class of sound that was once reviewed. Its also a discrete circuit which means no opamps that can degrade the sound. They just don’t make them like this any more! Don’t be surprised if it beats your 500+ modern amp as quite simply put it, there is no competition! Both in design and quality of parts it will excel.
This is your rare opportunity to own a classic super upgraded and serviced Nad C300. Just see my feedback if your not sure about what you are reading and you will know how good my work is!
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Ioffer 1 month free repair on all my items even though they are thoroughly tested before shipping for peace of mind. I dont like unhappycustomers! After 1 month or even years later I will offer low raterepair costs on all my items purchased regardless of fault. Buyer is responsible for all shipping costs.
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Category: Sound and Vision:Home Audio and HiFi Separates:Amplifiers and Pre-Amps
Location: London