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Old 15th December 2004, 05:12 PM   #11
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To Sigurd : Directly from Toshiba ? One hundred thousands ? Or milion ?
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Old 15th December 2004, 07:33 PM   #12
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As long as one can get them, they are not discontinued, right?

One can always ask Borbely if you can buy some.







Sigurd
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Old 15th December 2004, 10:43 PM   #13
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Afaik Erno will sell you some fets in most cases.

here in the USA I can supply many japanese types, and have quite a few here for my own use/products...

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http://www.bearlabs.com -- Btw, I don't actually know anything, FYI -- [...2SJ74 Toshiba bogus asian parts - beware! ]
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Old 22nd January 2005, 10:38 AM   #14
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Borbely AUdio can sell you the JFETs he uses in his kits. Check out the new price list at

Borbely Audio high end component Price List



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Old 22nd January 2005, 10:46 AM   #15
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Default Re: Superbuffer instead of OPAMP

I got me the Superbuffer from Borbely Audio. I decided on the Teflon PCB and the part Caddock upgrade tgether with the high current optput option.

I also got some special rubber "feet" instead of the normal metal PCB fasteners.

Assembly was a piece of cake due to the special packing of the different components.

Here are some photos I took:

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.



Sigge






Quote:
Originally posted by Sigurd Ruschkow
Hi All,

my preamp is still in the designphase and I am now considering using a discrete lineamp or a buffer instead of an OPamp.

As I only need 0 or maybe 6 dB of gain for my CD player and tuner,
a buffer with just some gain might be even better sounding than the best of the best of OPamps.

Borbely Audio has both a lineamp and a buffer he calls "superbuffer".

The design below looks rather straightforward and good to me.

Has anyone some knowledge of Borbely's "Superbuffer"?

Click the image to open in full size.


Sigurd
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Old 22nd January 2005, 01:10 PM   #16
hjelm is offline hjelm  Sweden
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Really nice.
How much did it cost in the end, approximately?
Why did you go for the caddock's have you heard them or did someone else say they were better?

Which CD player are you going to put it in?

What about sonics? Have you listened to it yet?
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Old 22nd January 2005, 07:32 PM   #17
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Hjelm,
the prices are as follows (from the Borbely Audio price list at http://www.borbelyaudio.com/pics/012005%20kits.pdf :

Superbuffer Stereo with Teflon PCB: 150 Euros
Caddock Upgrade: 40 E
High Current Output: 16.5 E
6 db Gain Upgrade 10 E
Rubber Feet: 32 E

Dual Power Supply (Rectifier kit /309):135 E

Double dual Regulator (EB202/254): 185 E

In total: 568 Euros


I am still awaiting some special double-shielded transformers (toroid) so I have not listened to the kits yet.

I will use a stepped ladder attenuator with Dale resistors for most levels but for my preferred listening levels there will be Caddock MK132s installed.
ELMA switch.

I am not that fond of having "normal" metal film resitors in the signal path and that was the reason that I ordered the Caddock upgrade.

This preamp will have WBT Next Generation Silver chassie RCA connectors and internal wiring will be cotton insulated bare silver wire for the signal path and also for the power supply wires.

The CDplayer is a Harman/KArdon HD7525 with a discrete analog section. I have made some modifications to this CDplayer, and will do some more modfications when the preamp is finished. Interconnect cables are soldered directly before the muting switch inside the CDplayer. I am using Audio Consult't enamel insulated silver wire and cotton insulation together with WBTs Next Generation Silver RCA connectors for this interconnect cable.



Sigge
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Old 22nd January 2005, 07:49 PM   #18
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And whatabout are you dreaming ? Monocrystalic gold wires insulated by spider fibre ?
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Old 22nd January 2005, 10:29 PM   #19
AndrewT is offline AndrewT  Scotland
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Hi sigurd
are your example prices for 1 stereo pair or ten stereo pairs?
regards Andrew T.
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Old 24th January 2005, 11:00 AM   #20
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No need to be sarcastic.

The prices are for one stereo pair.

Dreaming? Who's dreaming? I am not.
Audio Consult's silver wire is here, and so is 4 pairs of WBT's NExtGen Silver xhassie RCA,
and so is 4 pairs of WBT's NextGen Silver RCA plug.

If you have a dream - make it come true!
I try to.



Best
Sigurd Ruschkowski
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