Collection of mods for Beresford TC-7520

**Covenant** · 25-07-2009, 16:14

There is a guy on ebay offering mods to the 7520. The op-amps are already well discussed but he also offers to upgrade the internal power supply.
I quote from an e-mail he sent:
'what i will do is replace the opamps and improve the internal power supply , i will decouple the capacitors, and reduce the noise floor ,if you want a power supply they are £50 extra but if you are happy with your own power supply the other mods will be a great start for you'
I would like to know if this has already been done by anyone, the benefits and any problems?

**trailer** · 25-07-2009, 16:17

Originally Posted by Covenant

There is a guy on ebay offering mods to the 7520. The op-amps are already well discussed but he also offers to upgrade the internal power supply.
I quote from an e-mail he sent:
'what i will do is replace the opamps and improve the internal power supply , i will decouple the capacitors, and reduce the noise floor ,if you want a power supply they are £50 extra but if you are happy with your own power supply the other mods will be a great start for you'
I would like to know if this has already been done by anyone, the benefits and any problems?

I think this is the same bloke I posted a link on another thread on here.
He didn't seem to have much of a description of the "mods" or indeed a price.

Edit:

http://theartofsound.net/forum/showt...=2352&page=117

Post #1165

**DaveK** · 25-07-2009, 17:14

Yep, same guy !!

**Gazjam** · 25-07-2009, 17:41

Is there a bargepole big enough....?

*EDIT*
Seems a reasonable guy from his feedback, would be good to invite him on here for a Q n A on what he does.

If he's 100% behind his services he'll welcome it?

**Covenant** · 25-07-2009, 18:31

Some feedback from Stan or Leo would be useful here. Personally I wouldn't go for any mod that Stan hasn't tried or commented on. I have already seen a comment unrelated to this from Stan which implied that a modification to one part would cause problems elsewhere. Its too easy to think "Oh that component only cost £x, I will replace with one that costs £Y"

**leo** · 25-07-2009, 19:14

Be interesting to get him on here, ideally a few pics and notes along with prices for the work done would give us more to comment on

**StanleyB** · 25-07-2009, 20:39

'what i will do is replace the opamps and improve the internal power supply , i will decouple the capacitors, and reduce the noise floor ,if you want a power supply they are £50 extra but if you are happy with your own power supply the other mods will be a great start for you'

Somehow I get the feeling this sounds like a catch...

Stan

**aewright78** · 02-08-2009, 01:06

Originally Posted by Sensimilia

The LM4562HA opamps with MLC5/MLC6 removed is a killer combination for string instruments and pianos. Triangles etc are also very well preserved during their travel from digital content to the ear drums.

Stan, I finally purchased a 7520 and it has now been "broken in". There is certainly more detail from my system, but now I am noticing some high frequency harshness and an increased noise floor compared to my stand-alone cd player.

Which of the opamp modifications/setups would you recommend I try?

Thank you for your help!

Sincerely,

-Adam

MartinT · 02-08-2009, 06:31

Stan, I'm interested in buying a TC-7510 since I need more S/PDIF inputs and don't need USB. Could you confirm whether the op-amp mods described here also apply to the 7510?

I'm currently using an old Assemblage DAC3.0, which still plays well but is old (non-oversampled) technology.

**leo** · 02-08-2009, 11:15

The op-amp and dac changes can be done to both 7510 and 7520 (7510 may require the wire mod along with a few other bits and pieces).
They won't sound the same though

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Please help me choose a mod. for treble and noise floor issues

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