Group buy: QRV09 Headphone amp

Status

CLOSED.

The pcb looks like this.

Background

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.

The organizer

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

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

Specifications for the offer

Specifications for the QRV09 pcb
Material	FR4
Thickness	1.6 mm
Dimensions	100 x 160 mm
Thickness copper	35 um, 1 oz.
Protection pads	Immersion gold
Solder mask	Red
Component print	White

Prices

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

Item	Price (SEK)	Notes
QRV09 pcb	90	35 pcb's according to list
TPA6120a	70	18 pcs. according to the list
Solder Fee	50	soldering fee for TPA6120a
AD8610	100 /pcs	you'll need two of them
Wago terminal kit	43	for all 11 poles
RIFA PPS cap 100 nF	18 /pcs	You'll need two of them

Exchange rates

Swedish krona SEK to other currencies

Details and Instructions

Documention

Forum info

Project thread, QRV09
Group Buy thread, QRV09

QRV09 home page

Home page for the project
Schematic, pcb layout

The Deal

The time line

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

Payment

Only Paypal is accepted.

Shipping

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.

Shipping
Weight gr	Sweden SEK	Europe SEK	The world SEK
100	12	24	28
250	24	48	60
500	36	80	90

Per-Anders Sjöström

The ordering and payment procedure

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

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
User	Country	P-A got email addr.	QRV09	TPA6120a	soldered	AD8610	Wago	PP S cap	Amount	Invoice	Paid	Shipped	Received	Not es
Drofo	Canada	Yes	1	1	1	2	1	2	469	110522	110523	110524	YYMMDD	_
arthur	hk	Yes	4	0	0	0	0	10	540	110403	110403	110417	YYMMDD	_
c12mech	USA	Yes	2	0	0	0	0	0	180	110403	110415	110417	110504	_
Ginum	Lithuania	Yes	1	1	0	2	0	2	376	110 404	110404	110417	110421	_
Ferrari	Netherlands	Yes	3	3	0	6	3	6	1257	110403	110403	110417	YYMMDD	_
Brambus	Italy	Yes	1	1	1	2	1	2	469	11040 3	110404	110417	YYMMDD	_
Westley	USA	Yes	1	1	0	2	1	2	419	110405	110405	110419	YYMMDD	_
goldkenn	Hong Kong	Yes	2	0	0	0	0	10	360	110405	110429	110429	YYMMDD	_
lum	Sweden	Yes	1	0	0	2	1	2	369	110404	110404	110417	YYMMDD	_
SoNic_real_one	USA	Yes	2	0	0	0	0	4	252	110403	110404	110424	YYMMDD	_
royalbee	Israel	Yes	1	0	0	0	1	2	169	110 404	110404	110417	YYMMDD	_
Forte.01	Australia	Yes	1	1	1	0	1	2	269	110403	110403	110417	YYMMDD	_
Sci	Sweden	Yes	1	1	0	2	1	2	419	110405	110405	110417	110418	_
ombudsmann	Germany	Yes	1	1	1	2	1	2	469	110404	110405	110417	YYMMDD	_
MrSlim	Canada	Yes	1	1	0	0	1	2	219	110404	110404	110417	110422	_
dfidler	UK	Yes	3	0	0	0	3	6	507	110405	110410	110417	YYMMDD	_
ToreM	Sweden	Yes	1	1	1	2	1	2	469	110403	110404	110417	YYMMDD	_
BillS	USA	Yes	3	0	0	0	0	0	270	110403	110403	110608	YYMMDD	_
UrSv	Sweden	Yes	1	1	1	2	1	2	469	110403	110403	110417	110418	_
bluegrass	Sweden	Yes	1	1	1	2	1	2	469	110403	110403	110424	YYMMDD	_
Jcon2	USA	Yes	1	1	1	2	1	2	469	110403	110403	110417	YYMMDD	_
Muzeau	France	Yes	2	0	0	0	0	0	180	11040 3	110403	110417	YYMMDD	_
RocketScientist	USA	Yes	1	0	0	0	0	0	122.72	110405	110405	110410	YYMMDD	Paid a bit too much
SvErD	Norway	Yes	1	1	1	0	0	2	226	110510	110510	110417	YYMMDD	_
icewall	Sweden	Yes	1	1	1	2	1	2	469	1104 10	110410	110417	110418	_
maravedis	UK	Yes	2	2	2	2	4	2	938	110429	110429	110429	YYMMDD	_
Deal	is	Closed	0	0	0	0	0	0	No	more	entries	-	-	_

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