Bruno Putzeys Balanced Preamp - Group Buy Part 3 - diyAudio
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Old 30th October 2016, 10:41 AM   #1
tfboy is offline tfboy  United Kingdom
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Join Date: Feb 2006
Location: Reading, Berkshire
Default Bruno Putzeys Balanced Preamp - Group Buy Part 3

This GB is now CLOSED and I do not have any components left. Thank you all for your interest - I might do another one soon, time permitting!

Previous thread here.

Background / original technical discussion thread HERE. A lengthy but very worthwhile read. Most technical questions will be covered in that thread.

This GB will be similar to beforehand with three options:

1. Bare PCB.
2. Assembled PCB with only the SMDs assembled. You'll still have to source all through-hole components and solder yourself.
3. Hypex regulator upgrade option. As last time, these will be supplied in pairs, so a quantity of 1 means one pair of regs. Shipped loose in the package, you'll have to solder to board - this is also a chance to get some at a reduced rate for other projects you might have on the go too

The BoM is here, in Excel format and in PDF format

Edit: spreadsheet should no longer be used as the GB is now finished.
Spreadsheet: >> THIS SHARED DOC <<.

All prices are in British pounds (GBP).

Final price per bare PCB (batch of 20): 6.00 + VAT = 7.20
Qty 20: 12 + VAT = 14.40
Qty 50: 6 + VAT = 7.20
Qty 100: 4 + VAT = 4.80


Final price per assembled PCB (batch of 70): 31.00 + VAT = 37.20
Qty 20: 40 + VAT = 48.00
Qty 50: 33 + VAT = 39.60
Qty 100: 27 + VAT = 32.40


Based on a quantity of 50 - 100 pairs of HPR/HNR Hypex regulators, one pair would cost around GBP 20 + VAT = 24.00

VAT will be applicable to EU people (unless purchasing through a VAT-registered business). Non-EU people will not have the VAT added (but you may have import duties outside of my control). Shipping to non-EU people will have a customs declaration form attached to the package

I appreciate there is / was a lot of interest for this first time round, and I have received quite a few PMs from people who unfortunately missed out, so if we can get enough people on board, it will be worthwhile doing it again.

Packaging and shipping
Packaging is a flat 2.00 + VAT to cover for boxes, anti-static bubble wrap, anti-static bags, etc.
Postage is at cost to me to send Royal Mail (International) Signed For or possibly courier depending on cost. Non-EU parcels will also have CN22 Customs Declaration form filled in.

Please email me "HypexPreAmpGB @ xavbroadcast dot co dot uk" with the following details:
Quote:
Forum username:
Email address:
Full name (and/or company name):

Number of bare PCBs: 0
Number of SMD-assembled PCBs: 0
Number of pairs of Hypex regs: 0

EU VAT number (if applicable):

Full Invoice address (including postcode, area, country, etc):

Delivery address if different to invoice one
Any questions, just ask

Last edited by tfboy; 5th June 2017 at 03:43 PM. Reason: Updated order status
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Old 30th October 2016, 11:12 AM   #2
Gerben is offline Gerben  Netherlands
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Location: Deventer
Yes please! One assembled board.
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Old 30th October 2016, 11:13 AM   #3
tfboy is offline tfboy  United Kingdom
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Quote:
Originally Posted by Gerben View Post
Yes please! One assembled board.
Done
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Old 30th October 2016, 12:24 PM   #4
ChrisPa is offline ChrisPa  United Kingdom
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Mine added.
Thanks for doing this (or even considering doing this). Much appreciated
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Old 30th October 2016, 06:09 PM   #5
flashgo is offline flashgo  United States
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Thank you! I signed up for 1 assembled board + 1 reg set.
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Old 31st October 2016, 10:06 AM   #6
tnargs is offline tnargs  Australia
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How many boards make 2 channels?

And how many pairs of regs is sufficient for 2 channels?
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Old 31st October 2016, 01:43 PM   #7
aradan is offline aradan  Singapore
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Location: Born in Russia, living in Singapore
Hi Tfboy,

One assembled board and 4 sets of regs

Sent from my ONE A2003 using Tapatalk
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Old 31st October 2016, 02:16 PM   #8
tfboy is offline tfboy  United Kingdom
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Quote:
Originally Posted by tnargs View Post
How many boards make 2 channels?

And how many pairs of regs is sufficient for 2 channels?
1 board.
Each board is stereo. And you have two pairs of switchable inputs. All are Neutrik balanced XLR sockets.
Each board can take one set / pair of regulators. You don't need the Hypex ones, you can use regular regs if you want.
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Old 31st October 2016, 06:27 PM   #9
tfboy is offline tfboy  United Kingdom
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Added tentative pricing. Shipping would be additional (at cost). See original thread for details.
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Old 31st October 2016, 08:18 PM   #10
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I have one question:

If I'm not wrong the power supply should be +12/-12 V.

Instead of any transformer, I'm planning to use the auxiliary +24/-24 (500mA) power supply from my SMPS1200/400 PS to feed just before the 1000uf caps. I would install LM7815 and LM7915 regulators at the +24/-24 output and then connect to the 1000uf/35V caps.

Will it work?
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