Mod your Beresford 7520

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17-05-2009, 18:28
leo

Quote:

Originally Posted by Covenant

Any filthy rich people on this forum? If so take a look at this op-amp: http://www.audioupgrades.co.uk/burson.shtml
Only £45 a go.

I doubt they are suitable in this dac
17-05-2009, 18:52
Covenant

It does say that its a replacement for the stock op-amp the NE5532 but you know better than me. Very much an acedemic question as I dont think anyone will be buying.
17-05-2009, 19:04
leo

Quote:

Originally Posted by Covenant

It does say that its a replacement for the stock op-amp the NE5532 but you know better than me. Very much an acedemic question as I dont think anyone will be buying.

Its the voltage requirement mate to power it:) +10v isn't enough, you want at least +/-10v (20v)
17-05-2009, 19:13
Covenant

Thats a relief, I was just reaching for my credit card.....
17-05-2009, 19:15
leo

Quote:

Originally Posted by Covenant

Thats a relief, I was just reaching for my credit card.....

You must be gutted :lolsign:
17-05-2009, 19:32
prenzlberger

allow me to re-cap ;)

I read this thread from the start through page 17 and then jumped to 72 and read on.
Ooomph, so many numbers.

But from what I gathered, for me as a complete novice, it would probably be best, to get some (how many?) LM4562NA, remove the existing pieces (which sit where?) and push in the new ones.

Correct? No soldering or mounting on carrier boards, etc?

Problem is that I have no idea what to take out. Does anyone have clear before-and-after pix and perhaps real simple instructions as to how to proceed, without ruining my brand new 7520?

This sounds like fun!

ciao for now

eckhard
17-05-2009, 21:33
Gazjam

345 onwards

ciao
18-05-2009, 03:50
James G

Quote:

Originally Posted by Covenant

Any filthy rich people on this forum? If so take a look at this op-amp: http://www.audioupgrades.co.uk/burson.shtml
Only £45 a go.

That looks similar to these:
http://www.audio-gd.com/enweb/pro/diy/OPA.htm

$25USD each - I have 2 of these (Earth and Moon) and they are very nice sounding. Worth the money IMHO.

I read somewhere else that this guy helped design the first gen Burson ones. Don't know how true that is.

EDIT: Forgot to mention that I have not tried these in the Beresford DAC!
18-05-2009, 07:00
Covenant

Quote:

Originally Posted by prenzlberger

I read this thread from the start through page 17 and then jumped to 72 and read on.
Ooomph, so many numbers.

But from what I gathered, for me as a complete novice, it would probably be best, to get some (how many?) LM4562NA, remove the existing pieces (which sit where?) and push in the new ones.

Correct? No soldering or mounting on carrier boards, etc?

Problem is that I have no idea what to take out. Does anyone have clear before-and-after pix and perhaps real simple instructions as to how to proceed, without ruining my brand new 7520?

This sounds like fun!

ciao for now

eckhard

The 4562 is the one if you dont want it mounted on an adapter. If you dont use headphones only buy one and replace the lefthand op-amp (controls towards you). An anti-static wrist strap is reecommended.
18-05-2009, 10:11
prenzlberger

@ Covenant

Thanks.

I use the fixed line-out for my STAX (which have their own amplification, of course) and the front-panel headphone jack for AKG701.
Furthermore, I might want a pair of powered monitors (for ambient background).
Should I get two then?

ciao for now

eckhard

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