What is better -> Buffer or simple pre

azamkita · 14th March 2005, 03:26 AM

Dearest Gurus,

may I humbly ask which is better to either to use a buffer (opa627) or simple pre (opa627 with 2 or 3 gain) to feed parallel 4780 ?.

Thank you very much

most regards

p/s: I am using CD63 as the source.

peranders · 14th March 2005, 06:33 AM

What is the difference between the alternatives? Do you need a buffer at all?

azamkita · 14th March 2005, 08:29 AM

Thanks for reply but, pardon me, I did not understand your reply

English not my first language.

Must I use single buffer (OPA627 without gain) or may I use simple pre (OPA627 x 2 or 3 gain without BUF) to feed my LM's (parallel chip) and why you said so ?.

Thanks for your explanation.

Most regards

Nuuk · 14th March 2005, 08:29 AM

A buffer is usually used very close to the amp and possibly with a low pass filter between it and the amp.

A preamp may use the same circuit but is separate to the power amp and used to drive the interconnects that join the two, or provide some extra gain.

What's best? It depends on your system and how it is configured. For simplicity, ie a single 'box' and fewer connections, putting the volume control and buffer in the same box as the power amp is a good idea.

But you may wish to put your power amps right next to the speakers. In that case, a separate preamp is preferable.

azamkita · 14th March 2005, 11:46 PM

Thank you - thank you Sir Nuuk

Nuuk · 15th March 2005, 08:22 AM

I wish that my bank manager called me Sir!

analog_sa · 15th March 2005, 11:24 AM

Quote:

I wish that my bank manager called me Sir!

And probably she will if you give her a helping hand with her buffer(s)

Alcaid · 15th March 2005, 11:35 AM

Quote:

Originally posted by analog_sa

And probably she will if you give her a helping hand with her buffer(s)

Was it just me NOT thinking audio right now?

Nuuk · 15th March 2005, 12:17 PM

Quote:

And probably she will if you give her a helping hand with her buffer(s)

Ropie · 15th March 2005, 02:21 PM

Quote:

Originally posted by Nuuk

Bank Managers everywhere should be saluting Sir Nuuk for helping so many people save a small fortune by building their own high-end audio kit instead of buying it commercially

Or maybe they would rather people borrowed more to buy more commercial stuff... the jury's out

14th March 2005, 03:26 AM	#1
azamkita diyAudio Member Join Date: Jun 2004 Location: Earth	What is better -> Buffer or simple pre Dearest Gurus, may I humbly ask which is better to either to use a buffer (opa627) or simple pre (opa627 with 2 or 3 gain) to feed parallel 4780 ?. Thank you very much most regards p/s: I am using CD63 as the source.

14th March 2005, 06:33 AM	#2
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	What is the difference between the alternatives? Do you need a buffer at all? __________________ /Per-Anders (my first name) or P-A as my friends call me

14th March 2005, 08:29 AM	#4
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	A buffer is usually used very close to the amp and possibly with a low pass filter between it and the amp. A preamp may use the same circuit but is separate to the power amp and used to drive the interconnects that join the two, or provide some extra gain. What's best? It depends on your system and how it is configured. For simplicity, ie a single 'box' and fewer connections, putting the volume control and buffer in the same box as the power amp is a good idea. But you may wish to put your power amps right next to the speakers. In that case, a separate preamp is preferable. __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

15th March 2005, 08:22 AM	#6
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	I wish that my bank manager called me Sir! __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

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14th March 2005, 11:46 PM	#5
azamkita diyAudio Member Join Date: Jun 2004 Location: Earth	Thank you - thank you Sir Nuuk

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