Group buy: QRV09 Headphone amp - diyAudio
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Group buy: QRV09 Headphone amp




The pcb looks like this.


I have designed a headphone amplifier based on the extremely high performing TPA6120a. The pcb has also a complete power supply with transformers and all.

Interesting features:
  • The pcb fits virtually any single opamp
  • Room for good coupling caps (if you must or like).
  • Input LP-filter if you have problems with RF interference (you should have a filter though).
  • High speed and high performance SMD current feedback amp as output stage.
  • No global feedback.
  • High quality power supply with large smoothing caps and transformers on the pcb.
  • Separate voltage regulators for each channel.
  • Fits any headphone.

[top]The organizer

I (Per-Anders Sjöström "peranders") will run the show.

[top]The Offer

I am offering:
  • PCB, double sided with red solder mask and gold pads
  • TPA6120
  • Soldered TPA6120
  • AD8610ARZ
  • Wago terminal kit
  • RIFA PPS cap 100 nF

[top]Specifications for the offer

Specifications for the QRV09 pcb
Thickness1.6 mm
Dimensions100 x 160 mm
Thickness copper35 um, 1 oz.
Protection padsImmersion gold
Solder maskRed
Component printWhite


The conditions for the price is at least 35 pcs. of the pcb's (at the list below)

ItemPrice (SEK)Notes
QRV09 pcb9035 pcb's according to list
TPA6120a7018 pcs. according to the list
Solder Fee50soldering fee for TPA6120a
AD8610100 /pcsyou'll need two of them
Wago terminal kit43for all 11 poles
RIFA PPS cap 100 nF18 /pcsYou'll need two of them

[top]Exchange rates

[top]Details and Instructions


[top]Forum info

[top]QRV09 home page

[top]The Deal

[top]The time line

Time line
NowSign up for interest only, no commitment
Beginning of AprilPayment time, only Paypal
12th of April 2011Order the pcb's an parts
Late April 2011Deliver the pcb's


Only Paypal is accepted.


You can rather safely choose "regular mail" to most places in the world. I have never experienced that anything has got lost but if you'll add 70 SEK you'll have some insurance.

Weight grSweden SEKEurope SEKThe world SEK

Per-Anders Sjöström

[top]The ordering and payment procedure

The ordering and payment procedure
1Decide how many boards and parts you want to order. Write it down on the list.
2Email me so I'll get your email address. Please also email me your contact info, address, phone number.
3I'll send you a Paypal invoice.
4You'll pay me as fast as you can, please.
5I'll make a note on the list that you have paid.
6I'll send the goods (when I have it), write it on the list also.
7You make a note when you have got the pcb's.

[top]The order list

Sign up and fill in username, country and
number of pcb's but let me add with the rest. You must also send me your email address.

Time to pay. Paypal invoices are sent out as soon as possible. Change only when you have received the stuff.

The order list
UserCountryP-A got email addr.QRV09TPA6120asolderedAD8610WagoPP S capAmountInvoicePaidShippedReceivedNot es
GinumLithuaniaYes110202376110 404110404110417110421_
BrambusItalyYes11121246911040 3110404110417YYMMDD_
goldkennHong KongYes2000010360110405110429110429YYMMDD_
royalbeeIsraelYes100012169110 404110404110417YYMMDD_
MuzeauFranceYes20000018011040 3110403110417YYMMDD_
RocketScientistUSAYes100000122.72110405110405110410YYMMDDPaid a bit too much
icewallSwedenYes1112124691104 10110410110417110418_

Created by peranders, 6th March 2011 at 11:27 AM
Last edited by peranders, 15th June 2012 at 05:26 AM
0 Comments, 7,344 Views
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