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Old 11th February 2004, 09:21 AM   #1
wijgers is offline wijgers  Netherlands
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Question NAD 514 Mod.

Has anyone ever modified the NAD514 cd-player?

Clock modification, and DAC modifications.

Or has someone a schematic of this particular cd player? It would be great.


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Old 11th February 2004, 01:11 PM   #2
krishu is offline krishu  Europe
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or any NAD service company. They sell service manuals for less than $/ 10.

Before you put an expensiove clock in, replace all electrolytic with faster (and maybe larger) ones, replace the filter caps with mica types, the opamps with better ones and reduce output impedance. This is cheap and does soooo much.

Also, dampen the chassis.

Visit my DIY page at
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Old 11th February 2004, 04:57 PM   #3
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Location: Wroclaw

I can send you the schematics of this player.Please give me the e-mail adress.

I used to own this player and modded it a little bit.
I put the clock,exchanged the electrolitycs.I also changed op-amps for BB OPA2134.
This is MASH DAC.The player sound quite good but lacks smoothness of mutibit DAC's (PCM63 or TDA1541A).
If you change op-amps be aware that some of the op-amps considered good might make this bright player much brighter.
For example ,with OPA2604 is sounded dry and sharp like a razor.
Very fatique.

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Old 29th December 2013, 12:26 PM   #4
ads2 is offline ads2  France
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Join Date: Dec 2008
I've just bought one yesterday for 40 Euros.
this thread has 10 years old.
What do you suggest me today for modding it ? and what AOP to choose ?
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